Control of Permanent Magnet Synchronous Generator (PMSG) Based Wind Turbines

Permanent magnet synchronous generator (PMSG) wind turbines with full-scale back-to-back pulse-width modulated (PWM) converters are being widely adopted in industry. This chapter presents a control strategy based on the synchronverter technology for back-to-back PWM converters. Both converters are operated as synchronverters, which are mathematically equivalent to the conventional synchronous generators. In contrast to common practice, the rotor-side converter (RSC) is responsible for maintaining the DC link voltage and the grid-side converter (GSC) is responsible for injecting the maximum power available to the grid. The RSC is operated as a virtual synchronous motor and the GSC as a virtual synchronous generator. The chapter also presents extensive real-time digital simulation results to verify the effectiveness of the presented method under normal and abnormal grid conditions.