Patent ID: 7602075
Filing Date: 2009-10-13
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine generator system comprising: a power supply operatively coupled to primary and ancillary turbine systems; an uninterruptible power supply device operatively coupled to ancillary turbine systems; a nacelle supporting one or more turbine blades and having a turbine blade pitch controller controlling a hydraulic turbine pitch drive circuit for each of the turbine blades and configured to actuate the blade between a zero feather position and a full feather position; a turbine controller configured to control ancillary turbine systems that are driven by the power supply during ordinary operation and in coordination with the uninterruptible power supply during a voltage irregularity; the turbine controller is also configured to control primary turbine systems including a turbine blade pitch control system, wherein the turbine controller maintains consistent operating characteristics through the power supply powering the primary turbine systems independent of the uninterruptible power supply device during both normal operation and voltage irregularities.