Abstract: An auxiliary drive/brake system for a wind turbine includes an impulse, high torque motor, a gearbox transmission, a drive shaft, and a transfer gearbox that connects to either the wind turbine low-speed shaft or to the wind turbine gearbox. Control of the auxiliary drive/brake system is performed by a programmable computer-based motor drive control system in combination with instrumentation and sensors fitted to the rotating wind turbine components. Torque and horsepower created by the present auxiliary drive/brake system is transferred into the wind turbine low-speed shaft where it combines with the torque and horsepower created by the wind acting on the wind turbine rotor blades, the combined torque and horsepower is 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.