Patent ID: 8047138
Filing Date: 2011-11-01
Classification: B60L

Abstract:
1. A self-regulating magneto-dynamic system provided for magnetic levitation, stabilization and propulsion in a high speed ground transportation vehicle moving with high speed along a track having a predetermined trajectory, said system comprising: a self-regulating Magneto-Dynamic Levitation and Stabilizing System (MDLSS) provided for magnetic levitation and stabilization of said vehicle; and a permanent magnet linear synchronous motor (PMLSM) provided for stable propulsion of said vehicle; said MDLSS including a supporting unit for levitation and vertical stabilization of said vehicle, and a guiding unit for guidance and horizontal stabilization of said vehicle; said supporting unit comprising: a stator fixed to said track and a levitator fixed to a bottom of said vehicle and magnetically coupled to the stator and movable with respect thereto; said stator of said first supporting unit including a pair of substantially identical elongated laminated first C-shaped steel cores each including a back and a first pair of substantially identical tips; a cross-section of each of said first pair of tips of said supporting unit having a sharpened end thereon and a profile in the shape of an upper part of hyperbola; the shape of said upper part of hyperbola of said first pair of tips provided to conform to magnetic flux lines during large downward deflection of said supporting unit from said stator, to increase magnetic field intensity and saturation of said first C-shaped steel core backs in order to maximize levitation; said guiding unit comprising: a stator fixed to said track and a levitator fixed to a side of said vehicle and magnetically coupled to the stator and movable with respect thereto; said stator of said guiding unit including a pair of substantially identical elongated laminated second C-shaped steel cores each including a back and a second pair of substantially identical tips; a cross-section of each of said second pair of tips of said guiding unit having a sharpened end thereon and a profile in the shape of hyperbola; said shape of hyperbola of the said second pair of tips provided to conform to magnetic flux lines, to increase magnetic field intensity and saturation of said second C-shaped steel core backs in order to maximize horizontal stabilization; said linear synchronous motor comprising a stator of variable winding turn lengths fixed to and extended along said track and a permanent magnet rotor fixed to said vehicle and movable with respect to said linear stator; said permanent magnet rotor comprising two opposite symmetrical pole-pitches movable relative to each other; each pole-pitch including a number of magnetic units of different length positioned in a row along said vehicle; a central magnetic unit of each of said pole-pitches being a first unit starting from a center of said rotor; the rest of said magnetic units increasing in length counting from said central units; the length of each of the rest of said magnetic units being equal to: Wherein i being the count of the rest of said magnetic units from said central magnetic unit, and L