Pitch Angle Control for a Permanent Magnet Synchronous Generator-based Wind Energy System based on Proportional Resonant (PR)

The study presents the development of a Proportional-resonant (PR) based pitch angle control strategy for a 2MW Permanent magnet synchronous generator (PMSG) based wind energy system. The model in this work comprises of wind turbine, Permanent Magnet Synchronous Generator (PMSG), AC-DC converter, DC-DC boost converter and Pitch angle of a standard 2MW wind turbine. The PR pitch angle controller was designed, gains optimized using Teaching Learning Based Optimization (TLBO) Algorithm and the performance of PR TLBO was compared with that of TLBO tuned fractional order non-linear PID (FONPID). It was then evaluated in terms of rise time, settling time, overshoot and undershoot of the frequency deviation; While FONPID takes 1.99 seconds to recover, PR took 1.860 seconds indicating its faster recovery from step wind speed. This in turn results to elimination of steady-state error which can not be achieved by FONPID when used with sinusoidal references.