Patent ID: 8916988
Filing Date: 2014-12-23
Classification: F03D,F05B,Y02E

Abstract:
1. A control system for a power generation system, wherein the power generation system comprises a plurality of turbine blades coupled to a hub, a plurality of motors, and a plurality of motor drives, wherein each motor is coupled to a corresponding one of the plurality of turbine blades and to a corresponding one of the plurality of motor drives, said control system comprising: a turbine controller configured to generate at least a first signal that is representative of a pitch control command to change a pitch angle of the plurality of turbine blades and a second signal that is representative of the pitch control command; a first pitch controller coupled to said turbine controller, said first pitch controller configured to receive the first signal and to implement the pitch control command by transmitting a corresponding primary motor drive signal to each of the plurality of motor drives in response to receiving the first signal; and a second pitch controller coupled to said turbine controller and to said first pitch controller, said second pitch controller is configured to receive the second signal and to implement the pitch control command by transmitting a corresponding secondary motor drive signal to each of the plurality of motor drives in response to receiving the second signal when said first pitch controller is unable to implement the pitch control command.