Single phase grid integration of permanent magnet generators associated with a wind turbine emulator test-rig

This paper presents low computation algorithms for single phase integration of permanent magnet generators associated with a wind turbine emulator test-rig. The grid synchronisation and grid side control are performed by Second Order Generalised Integrators (SOGI). A SOGI-FLL (frequency locked loop) was used for robust, accurate and low computation single phase grid synchronisation. Proportional-Resonant and Harmonics compensator controllers (PR+HC) were used to drive a grid tied inverter. Easy implementation, robustness and good current harmonic attenuation are the highlights of these control algorithms. Experimental verification on the wind turbine emulator test-rig, to include the generator side dynamics, is given.