Abstract:
A protective wind energy conversion chamber provides a protected multiple turbine mechanism axially aligned to convert kinetic energy of a moving fluid (e.g., wind) into rotational mechanical power by the reaction of the moving fluid with the turbine. The conversion chamber may either be configured as a vertical axis wind turbine (VAWT) or horizontal axis wind turbine (HAWT). The conversion chamber repositions an intake windward to collect and concentrate the wind prior to converting the wind into energy via the axially aligned multi-turbine mechanism. The remaining wind is released via a leeward-facing exhaust. Completely enclosed by the protective wind energy conversion chamber, the axially aligned multi-turbine mechanism avoids interference by birds and other outside objects.

Description:
FIELD OF THE INVENTION 
     The present invention relates to wind energy conversion chambers. More particularly, the present invention relates to wind turbines used to generate electricity or drive other engines. 
     BACKGROUND AND RELATED ART 
     Energy needs of our society continue to grow at an increasing rate. Unfortunately, much of this energy is supplied by nonrenewable resources whose relative availability continues to decrease. Members of the power generation industry are gradually developing more efficient methods of power generation, with the ambition of one day generating their electricity from clean, sustainable renewable resources. 
     One such potential area for expansion is wind energy. Wind turbines of various sizes and designs can mitigate our dependence on foreign energy supplies while providing distinct benefits to our domestic economy. Wind turbine designs may be optimized for particular locations and conditions. Moreover, wind turbines use the wind, a clean, nonpolluting energy source. 
     The United States has tremendous wind energy resources. In California, wind farms currently replace almost 4 million barrels of oil per year. At least sixteen states have even greater wind potential than California based on measured average wind rates. 
     The installed wind energy generating capacity in the U.S. is currently estimated to be around 6,400 MW, and is expected to generate about 16.7 billion kWh of electricity in 2004, which is less than about 1% of the total U.S. electricity generation. By contrast, the total amount of electricity that could potentially be generated from wind in the United States has been estimated at about 11,000 billion kWh annually, over three times the electricity generated in the U.S. today. 
     Existing wind farms help demonstrate how wind energy can help meet growing needs for affordable, reliable power. Moreover, with continued government encouragement through, among other things, heightened technology transfer from national laboratories to the wind energy industry, wind energy is slated to become more economical than traditional fossil-fueled energy. Some estimate that wind related energy sources could provide at least six percent of the nation&#39;s electricity by 2020. More importantly, the wind generator could help revitalize farms and rural communities without consuming any natural resource or emitting any pollution or greenhouse gases. 
     Wind turbines have traditionally been built using a turbine attached to a horizontal axis suspended high above the ground. Wind turbines have been used for centuries to capture the power of the wind to mill grain into flour or pump water. More recently, as previously indicated, wind generators; such as a wind turbine configured to produce electricity, have also been used to supplement the electrical energy supply. 
     Unfortunately, while the electricity generated by wind turbines use a clean, nonpolluting energy source, traditional wind turbine systems have a somewhat unexpected negative effect on the wildlife in the immediate environment, particularly on the local avian population. 
     Specifically, some wind turbine systems are configured to maintain such a fast rotation that the blades become almost invisible. The wind turbines must have sharp blades that efficiently cut through the wind. Moreover, the same sharp blades are often positioned high in the air at the top of a wind tower. As the wind towers are typically the tallest structures in the area, they become a natural perch for raptors and other birds. A deadly combination when coupled with the virtual invisibility of the sharp rotating blades, which are also very good at slicing through eagles and other birds. For example, the Center for Biological Diversity reports that the approximately 5,400 turbines located around Altamont Pass in California kill more than an estimated 800 birds a year, including several species protected by federal and state laws. 
     Even the officially documented avian collision and electrocution incidents reported from 1985 to 1988 at various California wind energy facilities tend to support the contention that the wind generators are more dangerous to the larger birds. For example, of the 147 reported incidents during the period from 1985 to 1988, 101 were raptors, of which 34 were eagles and 58 were hawks. Some estimate that in the Altamont Pass Wind Resource Area, an average of 11 eagle and 17 hawk incidents occurred annually. Unfortunately, ninety-one percent of all documented avian incidents eventually resulted in mortality for the bird. This high mortality rate and incident information helps identify the need to better understand and resolve the biological effects of wind projects on the surrounding environment. 
     As such, there is clearly a need for a more environmentally friendly and efficient wind based power device. Unfortunately, none of the currently available systems can provide environmental protection for the surrounding avian population. 
     SUMMARY OF THE INVENTION 
     A wind energy conversion method, system, and apparatus have been developed in response to the current state of the art, and in particular, in response to these and other problems and needs that have not been fully or completely solved by currently available wind energy conversion systems. More specifically, the wind conversion chamber allows for safe conversion of energy from a moving gas stream, such as a gust of wind or air current. In fact, the described wind energy conversion system may even be safely deployed in high density area, such as cities. 
     In accordance with one aspect of the present invention there is provided a device for converting wind energy with improved efficiency and environmental safety. In addition to the generation of energy, the described wind energy conversion chamber may provide protection for people and animals interacting with the wind conversion chamber. 
     While the wind energy conversion chamber is designed to be an efficient component of a wind farm, the protective design that encloses the moving parts also allows deployment in cities and along shorelines. In one embodiment, a rotatable turret forms the basis of the wind chamber. Alternatively, in areas where the wind flows from a dominate direction; the protectively covered intake may be fixed in the windward direction, which is substantially perpendicular to the regular flow of the ambient wind currents. One particular use of this embodiment is on top of a building, in a canyon, along a coastline, or atop a mountain ridge. 
     Adjusting the size of the wind energy conversion chamber enables use of various embodiments in conjunction with various moving vehicles to produce supplemental electricity. For example one embodiment collects and converts wind for various nautical vessels from large ships to small boats. This is particularly useful in recharging sailing batteries for later use when the wind is unavailable. Another embodiment provides energy in other vehicles, such as a car, bus, train, truck, or airplane via a venting system. 
     It is accordingly an object of the invention to provide energy using a method, system, and apparatus that overcomes the hereinabove-mentioned disadvantages of the heretofore-known devices of this general type and that provide wind generation. 
     With the foregoing and other objects in view, there is provided, in accordance with the invention, a method including the steps of positioning a protective covered intake to receive the wind, collecting the wind into multiple conduits, concentrating the wind within the conduits, converting the wind into energy, and directing the concentrated wind gust to a protective covered exhaust. 
     In accordance with another mode of the invention, the step of collecting the wind further partitions the wind into substantially equal portions. 
     In accordance with a further mode of the invention, there is provided the step of positioning that includes rotating about a yaw axis the protectively covered intake to obtain an optimum flow of the ambient wind current. 
     In accordance with an added mode of the invention, there is provided the step of determining whether the step of conversion is within operating thresholds. 
     In accordance with an additional mode of the invention, there is provided the step of repositioning the intake for optimal flow upon determining that the wind generator is operating outside of the operating thresholds. 
     In accordance with yet an added mode of the invention, each channel is divided into substantially equal concentrator conduits to direct and to separate the wind for a different turbine. 
     With the objects of the invention in view, there is also provided a system for wind energy conversion, the system including a wind chamber with a revolving or rotatable intake and exhaust, a converter, protective screens, and a turbine. 
     In accordance with one embodiment of the invention, the converter includes a unidirectional rotating shaft coupled to turbines within the converter. The rotating shaft is powered by rotational mechanical power generated by the rotating turbines. In an additional embodiment, the rotating shaft includes a plurality of telescoping shafts each coupled to one turbine. 
     In an alternative embodiment, the shaft is fixed and merely used as a support mechanism for the turbines and converters. The turbines rotate about the shaft and are individually coupled to at least one converter that changes the rotational mechanical power of the turbines to energy. 
     Other features that are considered as characteristic for the invention are set forth in the appended claims. 
     Although the invention is illustrated and described herein as embodied in a protective wind energy conversion chamber method, system, and apparatus, it is, nevertheless, not intended to be limited to the details shown because various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims. 
     The construction and method of operation of the invention, however, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings. 
     Additional features and advantages of the protective wind energy conversion chamber will be set forth in the description that follows, and in part will be obvious from the description, or may be learned by the practice of protected wind energy conversion. The features and advantages of the protective wind energy conversion chamber may also be realized and obtained by the instruments and combinations particularly pointed out in the appended claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings in which like reference numerals refer to similar elements. In the drawings: 
         FIG. 1  is a fragmentary perspective and partially broken away front view from above of the Wind Energy Conversion Chamber according to the present invention; 
         FIG. 2  is a fragmentary perspective and partially broken away back view from above of an embodiment of a Wind Energy Conversion Chamber according to the present invention; 
         FIG. 3  is a plan view from above of an embodiment of a suitable operating environment for a Wind Energy Conversion Chamber system according to the present invention; 
         FIG. 4A  is a cross-sectional side view of a rotating shaft vertical axis wind turbine embodiment of a Wind Energy Conversion Chamber system according to the present invention; 
         FIG. 4B  is a cross-sectional side view of a fixed shaft vertical axis wind turbine according to an embodiment of the present invention; 
         FIG. 4C  is a cross-sectional side view of a fixed shaft vertical axis wind turbine with multiple speed energy converters according to an embodiment of the present invention; 
         FIG. 4D  is a cross-sectional side view of a fixed shaft vertical axis wind turbine with variable speed converters according to an embodiment of the present invention; 
         FIG. 5  is a fragmentary block diagram from a side of a bearing lubrication and friction reduction system according to one embodiment according to the present invention; 
         FIG. 6  is a fragmentary exploded perspective and partially broken away side view of the conical shaft and base bearing according to the present invention; 
         FIG. 7  is a cross-sectional plan view from above of the Wind Energy Conversion Chamber according to the present invention showing section cut A—A of  FIG. 4A ; 
         FIG. 8  is a cross-sectional side view of a horizontal axis wind turbine embodiment of a Wind Energy Conversion Chamber system according to the present invention; 
         FIG. 9  is a fragmentary, cross-sectional side view of the variable speed transfer mechanism according to one embodiment of the present invention; 
         FIGS. 10A–10E  are perspective views of suitable operating environments for vehicular systems using embodiments according to the present invention; 
         FIG. 11A  and  FIG. 11B  are perspective views of suitable operating environments for nautical systems using an embodiment according to the present invention; 
         FIG. 12  is a perspective view of a suitable operating environment for a structural system using an embodiment according to the invention; and 
         FIG. 13  is a flowchart of the wind energy conversion process according to the invention. 
     
    
    
     DETAILED DESCRIPTION 
     In the following description, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known hardware, structures, and techniques have not been shown in detail in order not to obscure the understanding of this description. 
     Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification do not necessarily all refer to the same embodiment. 
       FIG. 1  and the following discussion are intended to provide a brief, general description of a suitable operating environment or wind energy conversion system  10 . A wind turbine or wind energy conversion system  10  is a machine or mechanism that captures the force of the wind and converts the force to another form of energy. In one configuration, the wind energy conversion system  10  is configured as a wind generator, a type of wind turbine system specifically configured to produce electricity. Other configurations may produce mechanical energy. The illustrated system  10  includes multiple turbines  20 , at least one generator  30 , a shaft  40 , a flywheel  50 , exhaust  60 , and a support structure  70 . 
     The support structure  70  concentrically positions the rotating shaft  40  about a yaw axis without interfering with the rotation of the housing  12  ( FIG. 3 ). In the embodiment illustrated in  FIG. 1 , the shaft  40  also rotates about the yaw axis. Multiple turbines  20 , at least one mechanical energy transfer mechanism (gear  32 ), and a flywheel  50  are coupled to the rotating shaft  40 . The flywheel  50  operates to maintain a substantially consistent revolutionary speed, much like a capacitor helps maintain a voltage or an inductor helps maintain a current in electrical circuits. 
     As previously indicated, one embodiment of the system  10  includes a rotating or revolving chamber or housing  12  having an intake  14  with a protective screen  16  that may be rotated to a windward direction about a common axis of the turbines  20 . Following readjustment of the revolving housing  12 , the intake  14  is preferably positioned windward in a substantially perpendicular or normal position to the detected flow of available wind current. The intake  14  is configured to collect wind and direct the collected wind into a concentrating channel  18  ( FIG. 2 ). The illustrated concentrating channel  18  includes multiple conduits, each conduit having an inlet and an outlet. The system  10  also includes multiple turbines  20   a  and  20   b , with each turbine partially intruding into a respective one of the multiple conduits. 
     A turbine  20  as used herein includes any mechanism in which kinetic energy of a moving fluid (e.g., wind) is converted to mechanical power by the impulse or reaction of the fluid with the turbine  20 . For example, upon receiving a gust of ambient wind current impinging on the blades  22  of a turbine  20 , the turbine  20  turns about an axis or shaft  40  positioned substantially normal (vertical or horizontal) to the ambient wind current. The illustrated embodiment of the turbine  20  also includes a bottom turbine plate  24  and top turbine plate  26  to help contain the wind within the conduit and to increase efficiency of the wind conversion by reducing the degree of vorticity or turbulent flow present around the turbine in the conduit. In one embodiment, the turbine  20  includes blades  22  arrayed about the circumference of a wheel or cylinder. The wheel or cylinder about the hub of the turbine helps to seal the compression chamber and limit the wind movement outside of the conduit. The cylinder is configured to further constrain the wind within the conduit and focus the wind energy on pushing the blades  22 . Exemplary blades  22  include a series of fins, paddles, cups, blades, wings, or the like. These blades may be customized for their application. For example, the blades may be designed with a double curve structure to quickly reach cut-in, the rotational speed at which an alternator or generator starts pushing electricity hard enough or has a high enough voltage to make electricity flow in a circuit. The double curve blade design may also enable the blade of the turbine to maintain effective operation at high winds. 
     Normally, the term “rotor” is used to describe both the blades  22  and hub assembly  42  of a wind generator and the armature of a permanent magnet alternator, however, to reduce potential confusion, the term turbine  20 , previously defined above, is substituted herein for “rotor” when referring to both the blade  22  and hub assembly  42  of a wind generator. 
     The hub  42  is the center of a turbine  20  and may include a thrust bearing to help transfer the force of the wind onto the turbines  20 . In one embodiment, the hub  42  is configured to enable rotation of the turbine  20  in a single direction. An embodiment, with a rotating shaft  40 , allows rotation of each turbine  20  to potentially contribute a moment force, or torque, to shaft  40  with respect to the yaw axis that goes through the center of the turbines  20  via the hubs  42 . 
     The hub  42  also positions the blades  22  in place and attaches the turbine  20  to a shaft  40 . The blades  22  are the portions of the turbine  20  that catch the wind. Some turbines  20  are designed such that their rotations are stall controlled by the placement of the blades  22 . In one embodiment, the blades  22  are dynamically positioned or the size of the blade chord changed according to the needs of the system  10 . A blade chord (see  FIG. 2  and  FIG. 4 ) is the width of a wind turbine blade  22  at a given location along the length. The hub  42  is generally coupled to a shaft via a thrust bearing designed to withstand the axial forces of the wind pushing against the turbine along a centerline of the blade chord with respect to the shaft  40 . 
     In addition to the wind generator rotor previously described, an embodiment of the system  10  includes a generator  30  with a variable magnetic armature or rotor  34  electromagnetically coupled with a variable stator. The variable stator and variable armature/rotor  34  may fluctuate according to the rotational speed of the shaft  40  to optimize the amount of electricity that can be harvested. Alternatively, a rotor of a generator may be clutch-driven according to the rotation of the turbine  20  and/or shaft  40 . Embodiments of system  10  employ multiple generators  30  optimized for the detected and collected wind speed. (See  FIG. 4B ,  FIG. 4C , and  FIG. 9 ). 
     In one embodiment, the mechanical power (e.g., rotation of the turbine  20  about the axis of rotation) generated by the conversion of the kinetic energy of a moving fluid (e.g., wind) is converted to electrical power by an alternator/generator  30  or a dynamo. For example, the rotating shaft  40  or revolving turbines  20  of the wind conversion system  10  may transfer the mechanical power via gears  32 , pulleys, rollers, belts, magnets, or other means to an alternator/generator  30  or dynamo. When a rotating armature or rotor  34  of the alternator/generator  30  moves, magnets move past wire coils (or a wire moves past a magnet) and the resulting magnetic fields push electrons through the coil generating electricity to be harvested. 
     The magnetic field can be produced by either permanent magnets or electromagnets. Exemplary suitable permanent magnets include neodymium-iron-boron (NdFeB) magnets, Samarium cobalt magnets, hard ferrite (ceramic) magnets, fabricated magnets, polymer bonded magnets, alnico (aluminum, nickel, cobalt) family of magnets, and the like. 
     In one embodiment, the shaft  40  provides support, but does not rotate (see  FIGS. 4B–4D ). As indicated previously, the turbines  20  in the fixed shaft design may transfer the mechanical power via gears, pulleys, rollers, belts, magnets, or other means to an alternator/generator  30  or dynamo of the wind generator. 
     In addition to providing a protective covering for the turbines  20 , the revolving housing  12  is also configured to act as a wind barrier or wind shield to prevent wind currents from negatively interfering with rotation of the turbine  20 . While turbines  20  are typically designed to rotate in a single direction, in unprotected designs the wind blows onto both the receiving blades and the blades on the opposite side of the exposed turbine. As a result, the blades are generally designed to receive the wind on one side and to deflect the wind on the other. Unfortunately, even the deflection of wind by the turbine involves some resistance and steals potential energy from the turbine&#39;s rotation. As the theoretical maximum power efficiency of an ideal windmill is only 59.3% according to the Betz Coefficient, every little improvement or reduction in friction/resistance helps. The revolving housing  12  prevents conflicting wind currents from adversely affecting the turbine. 
     The illustrated revolving housing  12  shields the turbine  20  and allows the turbine designer to focus on providing an efficient unidirectional turbine design for the turbine. The illustrated system  10  uses a two-stage energy conversion from wind to rotational energy to electricity. Other embodiments could simply us a single stage conversion from wind to mechanical energy. 
     In one embodiment, the convex shape of the revolving housing  12  helps to channel additional air towards the intake of the chamber. In  FIG. 1  and  FIG. 2  this is illustrated through the rounded convex nature of the revolving housing  12 . However, other channeling designs might also be used, such as a concave or straight, without departing from the spirit and scope of the invention. 
     In one embodiment, the housing  12  also includes a protectively screened ( 16 ) exhaust  60  (See  FIG. 2  and  FIG. 3 ) that may be rotated to a substantially leeward position. This exhaust configuration may help reduce the turbulence associated with the system  10 . 
       FIG. 3  is a plan view from above of an embodiment of a suitable operating environment for a wind energy conversion chamber system  10  according to the present invention. The support structure  70  concentrically positions the turbine  20  and the rotating shaft  40  about a yaw axis without interfering with the rotation of the housing  12 . In one embodiment, the housing  12  may rotate 360° or the entire arc of the circle. Other embodiments may use more limited ranges of motion based on the application and environment. For example, one embodiment permanently fixes the position of the inlet  14 . 
     The housing  12  rotates about the axis of the turbine  20 . As such the inlet  14  moves in a circular path concentric with the axis of the turbine  20  and shaft  40 . Other support structures may be used without departing from the spirit or significant characteristics of the described and illustrated support structure. More specifically, the support structure should provide the system  10  with the range of rotation required for the environment and/or application. As such, the described embodiments of support structure  70  are to be considered in all respects only as illustrative and not restrictive. 
       FIG. 4A  illustrates another suitable operating environment of a wind energy conversion system  10 . More specifically,  FIG. 4A  is a cross-sectional side view of a vertical axis wind turbine embodiment of the system  10 . The system  10  further includes coupler  44  on shaft  40  to better facilitate maintenance. 
       FIG. 4A  illustrates airflow from the inlet  14  through the concentrating channel  18  to the blade chord of the turbine  20 . Each turbine  20  has a plurality of blades, a top turbine plate  26 , and bottom turbine plate  24 . Each turbine  20  partially intruding into a respective one of the multiple conduits of the concentrating channel  18  and positions the plurality of blades substantially normal to the flow of the concentrated wind. The turbines  20  are each mounted within the wind chamber to position at least a portion of the plurality of blades within a plenum created in the concentrating channel  18 . 
       FIG. 4A  illustrates a mechanical energy transfer mechanism including multiple gears  32 . Each gear is operatively coupled to an armature/rotor  34  associated with a dynamo or generator  30 . Embodiments of the system  10  may use at least one of gears, pulleys, rollers, belts, magnets, and/or other means as the mechanical energy transfer mechanism. 
     In one embodiment, the armature/rotor  34  may be selectively engaged or disengaged from the rotating gear  32  based on the rotational speed of the shaft  40 . A clutch mechanism can also provide a means for preserving the generator  30  until a cut-in speed has been achieved. Moreover, if the shaft exceeds the operational thresholds of the respective generator  30 , the clutch mechanism can withdraw the armature/rotor  34 . 
       FIG. 4A  also provides a side view of the rotational mechanism used to turn the housing  12  about the yaw axis of the axially aligned turbines  20 , which should be considered in combination with the top cross-sectional view of  FIG. 7 . 
     The wind detection devices in  FIG. 1  and  FIGS. 4A–4D  may also serve as an activation switch for the system  10 . Specifically, when sufficient wind is detected, the system  10  is accordingly activated and, if necessary, begins the positional intake readjustment. Exemplary wind detection devices include mechanical and electronic anemometers, wind sails, windsocks, Sonic Detection and Ranging Devices (SODARs), and the like. 
       FIG. 4A  also illustrates the interaction of the support structure  70  with the housing  12 . The support structure  70  concentrically positions the rotating shaft  40  about a yaw axis without interfering with the rotation of the housing  12 . In  FIG. 2  and  FIG. 4 , the conduits of the concentrating channel  18  narrow to the size of the blade chord before the turbine  20  partially intrudes into a respective one of the multiple conduits from the housing  12 . As such the edge of the housing  12  interfacing with the concentrating channel  18  travels a circular path concentric with the axis of the shaft  40 . 
     In one embodiment the shaft  40  is lifted by the support structure so that the tip  54  “floats” on the lubricated support block  52 . An embodiment hangs the shaft  40  using bearings to share the weight between the lubricated support block  52  and the support structure. 
       FIG. 4B  is a cross-sectional side view of a fixed shaft vertical axis wind turbine according to an embodiment of the present invention. The axially aligned revolving turbines  20   a  and  20   b  of the wind conversion system  10  transfers the mechanical power of their rotation via concentrically arranged gear tracks on the turbines. Other transfer mechanisms include rollers, magnets, pulleys, belts, or other means. 
     As with  FIG. 4A , the embodiment illustrated in  FIG. 4B  may have multiple generators engaged with the turbine at once, depending on the operating conditions. Specifically, additional generators may be connected when the turbines are rotating above a given operational threshold and removed when rotating below another given threshold for the device. In addition to adjusting the load on each turbine, the system  10  may also adjust the blades  22 , the inlet  14 , and/or the concentrating channel  18  to bring the device within given operational thresholds. 
     As the concentrating channel  18  generally divides the airflow into substantially equal portions, both turbines tend to rotate at substantially the same speed. As such, equally matched generators are generally positioned concentrically equidistant from the yaw axis of the turbine. 
     Moreover, the concentrating channel  18  narrows to the width of the blade chord, between the lower turbine plate  24  and the upper turbine plate  26 , to focus the collected wind onto the turbine  20 . 
       FIG. 4C  is a cross-sectional side view of a fixed shaft vertical axis wind turbine with multiple speed energy converters according to an embodiment of the present invention.  FIG. 4C  illustrates the potential vertical expansion of the system  10  through the additional turbines  20   a ,  20   b , and  20   c . Moreover, the transfer mechanisms may employ a variety of modifications to enhance performance. For example, several gear tracks may be added to each turbine, the gear ration between rotor and turbine may be altered, size of generator may be changed, and the like. 
       FIG. 4C  also illustrates the division of inlet  14  into distinct concentrating channels  18  each assigned to a separate turbine and narrowing the inlet  14  to the width of the blade chord. 
       FIG. 4D  is a cross-sectional side view of a fixed shaft vertical axis wind turbine with variable speed converters according to an embodiment of the present invention. Although the majority of applications will result in a substantially equal division of collected wind between the turbines, in one embodiment, each vertical level is subjected to different wind strength and therefore connects to the turbine at different locations along the turbine to optimize performance according to environment. The stronger winds having transfer mechanisms, such as a gear track, positioned to produce peak performance.  FIG. 4D  also illustrates an alternative concentrating channel design, which narrows the channel for the collected air to substantially the width of the upper turbine plate  26  to the lower turbine plate  24 . 
       FIG. 5  is a fragmentary block diagram from a side of a bearing lubrication and friction reduction system  80  according to one embodiment according to the present invention. The frictional forces that resist the rotation of the turbines  20  and/or shaft  40  are greatly reduced through the use of a friction reduction system that may include bearing lubrication and an extensive lubrication system  80 . The lubrication system  80  includes fill lines  82 , drain lines  84 , a plurality of lubricant pans  86 , seals  87 , and bearings  88  associated with each hub assembly  42 . The lubrication system  80  may also include a top lubricant reserve with float switch, a drainage reserve with a pump coupled to the top lubricant reserve. 
     In one embodiment, the lubricated support block  52  also receives lubricant from fill lines  82  and removes lubricant via drain lines  84 . In one embodiment, at least the fill lines  82  of the lubrication system  80  are pressurized. Alternatively, the continuous-flow coolant lubricant of the illustrated lubrication system  80  could be replaced with viscous lubricant, such as grease. 
     In one embodiment, the lubricated support block  52  is adjustable. This allows the support block to be moved up as the tip of the shaft wears away over time due to friction. The support block  52  may also be lowered to perform maintenance on the shaft  40 . As previously introduced, coupler  44  allows portions of the shaft  40  to be removed for maintenance. In one embodiment, the tip of the shaft is replaced with a larger chamfer or rounding. 
       FIG. 6  is a fragmentary exploded perspective and partially broken away side view of the conical shaft tip  54  and the lubricated support block  52  according to the present invention. As previously indicated the friction reduction system includes a lubricated support block  52  to receive a conical shaped tip  54  on the shaft  40 . Grooves  53  enable the lubricant to be equally delivered to the base bearing  56  without requiring pressurization. However, one embodiment pressurizes the lubricant so that the tip floats in the base bearing. 
       FIG. 7  is a cross-sectional plan view from above of the wind energy conversion system  10  according to the present invention showing section cut A—A of  FIG. 4A . More specifically,  FIG. 7  illustrates an embodiment of the revolution mechanism of system  10  to facilitate the repositioning of the intake and the housing (shown in outline only). The revolution mechanism includes motor  74  to turn the housing  12 . The motor  74  interfaces with a circular gear track on a flange gear  76 , the flange gear being concentric with the yaw axis of shaft  40  and revolving on supporting wheels  77 . The gear track maintains its concentric position relative to the yaw axis of the shaft via roller pins  73  positioned on the inside of the gear track. The flange gear  76  is coupled via support spokes  72  to housing  12 . In one embodiment, supporting wheels  77 , roller pins  73 , rotating motor  74 , support brackets  78 , slide rollers  79  and the shaft bearing  88  are secured to the support structure  70 . 
     The lower edge of the housing  12  rests in slide rollers  79  on support brackets  78 . The slide rollers  79  are slidably attached to support brackets  78  and allow the edge of housing  12  to pass through while sliding in or out on the support brackets  78 . In one embodiment, the support bracket  78  is rod shaped, passes through the slide roller  79 , and is configured to function as an axle for the slide roller  79  which rotates about the support bracket  78 . During intake readjustment, when the edge of the housing  12  positioned above each support bracket  78  moves in or out relative to the center of the shaft  40 , the respective slide roller  79  on the support bracket  78  moves concurrently in or out along the support bracket  78 . 
       FIG. 8  is a cross-sectional side view of a horizontal axis wind turbine according to an embodiment of the present invention. A Horizontal Axis Wind Turbine (HAWT) is designed so that the axis of the rotating turbine or shaft of the wind turbine is parallel to the ground. The horizontal axis wind turbine configuration is useful in environments where the wind is predominately collected from a single direction. Exemplary operational environments include a moving vehicle, a shoreline, a mountain ridge, or a building. 
     The horizontal axis wind turbine includes multiple turbines  20 , gears  32 , and flywheel  50  axially aligned and concentrically arranged along shaft  40 . As with the previously described vertical axis wind turbine, the horizontal axis wind turbine also includes at least one generator  30  coupled to each gear  32  via armature/rotor  34 . Moreover, the inlets  14  are each coupled to concentrating channels  18 , which narrow to about the size of the blade chord of the turbine  20 . 
       FIG. 9  is a fragmentary, cross-sectional side view of a variable speed transfer mechanism according to an embodiment of the present invention. A mechanical energy transfer mechanism includes multiple gears  32   a ,  32   b , and  32   c . At least one generator  30  is coupled to each gear  32  via armature/rotor  34 . The transfer mechanism may include a clutch mechanism to engage and disengage the rotors  34  to the gears  32  based in part on the operational thresholds of the system  10 . More specifically, if the shaft  40  is spinning too fast a more powerful generator may be applied. Alternatively, one embodiment enables the use of multiple generators to a single shaft. 
     The transfer mechanism also attempts to prevent freewheeling; a condition created when a wind generator is not connected to a load and is thereby in danger of self-destruction from overspeeding. 
       FIG. 10A  and  FIG. 10B  are perspective views of suitable operating environments for vehicular wind energy conversion systems.  FIG. 10A  illustrates a side venting system with an exhaust to the rear or bottom of the vehicle. The side venting system may also be replaced with a top or bottom venting system. Accordingly, the conversion system may employ either a vertical axis wind turbine (VAWT) or horizontal axis wind turbine (HAWT) configuration. Moreover, the systems illustrated in  FIG. 10A  and  FIG. 10B  demonstrate that the shaft may be positioned parallel or perpendicular to the rear wheel axle on the vehicle.  FIG. 10C  provides a top view of an embodiment of a side venting system with a shaft parallel to the car axle. In one embodiment, the side vents are adjustable between an open and a closed position, such that the vents are closed when the car is not in motion and open when sufficient airflow has been detected. 
     An embodiment using a protected top venting system in a wind supplemented transportation system is illustrated in more detail in  FIG. 10D  and  FIG. 10E  of an embodiment according to the present invention. It is anticipated that variations of the protective top venting configuration could also be used in association with trucks, trains, buses, airplanes, and the like. For example a refrigeration truck could supplement its power from wind energy collected from vents on the trailer. Electric busses could recharge batteries and trains could collect power to run lights. 
       FIG. 11A  and  FIG. 11B  are perspective views of suitable operating environments for various nautical systems using embodiments according to the present invention. Specifically, in  FIG. 11A  a VAWT conversion system  10  is positioned at the bow of the boat. In the yacht illustrated in  FIG. 11B , the VAWT conversion system  10  is placed above the captain&#39;s cabin on the top deck. In addition, other configurations are also possible for example; the conversion system  10  may also be positioned atop a mast of a sailing vessel as illustrated in  FIG. 11A  or in the superstructure atop a cruise ship near one of its funnels or stacks. 
       FIG. 12  is a perspective view of a suitable operating environment for a structural system using an embodiment according to the invention. Specifically, three conversion systems  10  are placed along the edge of a building. The units placed in the corners of the building are enabled for rotational range of at least 270° and are VAWT. The unit in the center illustrates a HAWT similar to the embodiment previously illustrated in  FIG. 8 . 
     In one embodiment, the wind energy conversion system  10  is a freestanding multi-story building structure. This larger embodiment may be useful in commercial wind farm generation projects. 
     Turning now to  FIG. 13 , particular methods of various embodiments are described in terms of operational mechanisms with reference to a flowchart. The methods to be performed by a wind energy conversion device constitute operational programs performed by mechanical devices or computer-controlled machines. Describing the operational methods of the wind energy conversion chamber by reference to a flowchart enables one skilled in the art to develop such operational programs including such instructions to carry out the methods on suitably configured control devices (the rotating mechanism of the chamber housing and/or clutch mechanism associated with the generators). 
     The steps may be monitored and performed in a computer controlled device or may be embodied in a mechanical device. If written in a programming language conforming to a recognized standard, such instructions can be executed on a variety of hardware platforms and for interfaces to a variety of operating systems. 
     It will be appreciated that a variety of devices and methods may be used to implement the control system for a protective wind energy conversion chamber as described herein. Furthermore, it is common in the art to speak of flowchart steps, in one form or another (e.g., program, procedure, process, application . . . ), as taking an action or causing a result. Such expressions are merely a shorthand way of saying that execution of the step by a device causes the control system of the protective wind energy conversion chamber to perform an action or a produce a result. 
       FIG. 13  is a flowchart that illustrates one embodiment of a wind energy conversion system  1300 . Initially, the system  1300 , upon detecting sufficient wind, is activated and thereby places the system  1300  into an activation and detection operational mode in block  1310 . In the activation and detection mode, the wind energy conversion system  1300  detects wind and accordingly activates the positional intake readjustment in block  1320 . 
     In one embodiment, the activation and detection mode in block  1310  also detects the strength of the wind gusts and selects an appropriate operational mode for the system  1300 . Exemplary operational modes include high wind generation mode, variable gusts generation mode, steady state generation mode, low wind generation mode, no wind mode, evaluation mode, and demonstration/manual adjustment mode. Upon selecting an operational mode, the system  1300  generates or applies operational thresholds to assist the system  1300  in readjusting the intake in block  1320 . These operational thresholds may also be useful for maintaining a consistent speed or rotation of the turbines, when required by an attached generator. Alternatively, the detection of variable wind gusts may activate a variable generator or conversion mechanism that is not dependent upon the maintenance of a constant rotational speed. In one embodiment, readjusting the intake includes repositioning the housing of the chamber such that the protectively covered intake is windward to receive the wind. The intake is thereby positioned substantially normal to a flow of ambient wind current. In one embodiment, intake readjustment in block  1320  includes rotating the protectively covered intake about a yaw axis of the plurality of wind turbines. In at least one embodiment, the yaw axis coincides with the axis of the shaft. 
     Moreover, in one embodiment intake readjustment in block  1320  also includes exhaust readjustment, such that the protectively covered exhaust is positioned to release wind in a substantially leeward direction. This release can reduce the area of turbulence on the leeward side of the system  1300 . The repositioned exhaust may also further increase the stability of wind currents around the system  1300  by redirecting “swirling gusts” outside of intake and exhaust areas. 
     Once the system  1300  is appropriately readjusted in block  1320 , the system  1300  provides the status of collection in block  1330 . If the system  1300  is not collecting wind at the anticipated level for the detected wind current, the system  1300  returns to block  1320  for additional optimization and readjustment. If collection of the wind is determined to be within the desired thresholds and/or levels in block  1330 , then the system  1300  proceeds to concentrate the collected wind in block  1340 . 
     Concentration of the collected wind in block  1340  may be accomplished in a variety of ways. In one embodiment, the protectively covered intake directs the wind into a channel having multiple conduits. Each conduit includes an inlet and an outlet. The area of the inlet opening being greater than the outlet opening. Thus, by reducing the available area within the conduits the wind is concentrated. Other embodiments include the strategic introduction of heat to further increase the concentration of the collected wind. 
     From the concentration block  1340 , the system  1300  may begin conversion of wind to energy in block  1350 . In one embodiment, the kinetic energy of a moving fluid (e.g., wind) is converted to mechanical power by the impulse or reaction of the fluid with the turbine. For example, upon receiving a gust of ambient wind current impinging on the blades of a turbine, the turbine turns about an axis positioned normal to the ambient wind current. In one embodiment, the turbine may include a series of fins, paddles, or blades arrayed about the circumference of a wheel or cylinder. In one embodiment, the wind generator is configured to produce electricity. 
     In Query block  1360  a decision is made concerning whether the conversion process is performing or operating within thresholds. Exemplary operational thresholds include collected wind speed, intake direction, available wind speed, available conversion mechanisms, efficiency of conversion, concentration ratios, efficiency of concentration, ambient wind temperature, vertical variance of available/collected wind and combinations thereof. If it is determined that the system  1300  is operating outside of given thresholds and requires additional adjustment, the modification is conducted in block  1320 . The modification may include shifting generation gears, rotating the intake position, adjusting the level of concentration, elevation activation/deactivation of wind turbines, and other performance examinations. Other adjustments and/or thresholds may be added to the system  1300  in conjunction with the evaluation of operational conditions and overall performance. In this manner, the protective wind energy conversion device can be customized to the needs and interests of the operator. 
     For example, in another embodiment, the system  1300  operates in an evaluation mode to determine the optimal operation settings for the environment originally detected in block  1310 . For example, the system  1300  configuration previously described above could be modified into an evaluation tool by adding a running clock to the device and monitoring the electrical output of the chamber over a measured period. A preset time could be determined in order for the device to operate at various settings and to select the preferred operation settings for the monitored environment. Upon completing an evaluation of all reasonable settings for the given thresholds, the system  1300  could return to the activation and detection mode and use the collected data to select future operational modes. 
     In one embodiment, the protective wind energy conversion chamber operates in a generation mode. In this mode, the protective wind energy conversion chamber can locate the available wind and adjust the intake and internal components to optimize generation under the detected conditions. Exemplary generation modes include high wind generation mode, variable gusts generation mode, steady state generation mode, and low wind generation mode. A no wind mode may also be detected, but is not typically considered to be a generation mode. The system allows adjustments based in part on the operational thresholds and on the available environmental conditions. 
     A variety of different methods, in addition to those previously described mechanisms, may be used for converting the wind. For example,  FIG. 4B ,  FIG. 4C , and  FIG. 4D  provide an illustration of a cross-sectional side view of various fixed shaft vertical axis wind turbine configurations according to embodiments of the invention. Specifically, the generators are supported by the stationary shaft and are directly coupled to the turbines through a transfer mechanism, such as a gear or roller, and are thereby individually actuated by the wind.  FIG. 4B , FIG.  4 C, and  FIG. 4D  also illustrate methods of varying the generated output, by increasing or decreasing the radius of the gear or roller track on the turbine. The configuration in  FIG. 4D  may be useful in environments where there is a sizable difference in wind strength according to the vertical position of the intake. 
     The present invention may be embodied in other specific forms without departing from its spirit or significant characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. Therefore, the scope of the invention is indicated by the appended claims rather than by the foregoing description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.