Linear parameter-varying gain-scheduled robust control for active magnetic bearings of flywheel energy storage system
磁悬浮储能飞轮线性变参数鲁棒增益调度控制

A linear parameter-varying gain-scheduled robust controller design method is developed to deal with the model-varying problem in controlling the active magnetic bearings of the flywheel energy storage system with strong gyroscopic effect. Model-varying phenomenon is induced by the rapid change in flywheel rotation speed. Thus, a speeddependent linear parameter-varying model of flywheel is derived; and a gain-scheduled robust controller is designed which guarantees the robust stability and performance in the entire speed range of the flywheel. To reduce the design conservation, the speed range can be limited to improve the performance in the controller design. Compared with the robust controller based on linear time-invariant model, the linear parameter-varying gain-scheduled robust controller realizes the adaptive parameter adjustment with the varying speed, and has remarkable advantages in robust stability and performance in the entire speed range. The simulation validates the effectiveness and advancement of the designed controller.