Abstract
Nonlinear operation conditions, parameter uncertainties and external disturbances makes the controller design of a wind conversion system based permanent magnet synchronous generator (PMSG) a challenging work. This study proposes new passivity-based control combined with PID controller to replace the conventional proportional-integral (PI) controls in the machine-side converter (MSC) for a PMSG-based wind conversion system with grid connection. The characteristic of this strategy is that the nonlinear terms are not cancelled but compensated in a damped way, in that way the PMSG is forced to operate at an optimal torque. In this work the controller aims are the maintaining of the DC-link voltage and the reactive power to their reference values. Effectiveness, stability, and fast convergence of the proposed controller are performed by the obtained simulation results under MATLAB/Simulink.
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