Patent ID: 8203229
Filing Date: 2012-06-19
Classification: F03D,F05B,H02P,Y02E

Abstract:
1. An auxiliary drive/brake system for a wind turbine, the wind turbine including wind turbine rotor blades connected to a wind turbine low-speed shaft, the wind turbine low-speed shaft drives a wind turbine gearbox via an input shaft of the wind turbine gearbox, an output shaft of the wind turbine gearbox and a wind turbine high speed shaft which connects to an input shaft of the wind turbine generator that produces electricity that is supplied to a power company electricity transmission network, wherein torque and horsepower created by the auxiliary drive/brake system are transferred into the wind turbine low-speed shaft, the torque and horsepower are transferred from the wind turbine low-speed shaft into the wind turbine gearbox and the wind turbine generator, causing the wind turbine generator to operate and produce electricity which is supplied to the power company, the auxiliary drive/brake system comprising: a motor drive control system; a high torque motor connected to the motor drive control system which controls the high torque motor; a gearbox transmission; a driveshaft; and a transfer gearbox connected to the gearbox transmission by the driveshaft, the transfer gear box connects to the wind turbine low-speed shaft and to the wind turbine gearbox; wherein the control motor drive control system controls and operates the high torque motor to drive the gearbox transmission, the driveshaft and the transfer gearbox, the motor drive control system using programmable control curves and feedback control circuits that adjust speed, torque, power and acceleration based upon instrumentation.