Wind Energy Conversion System Connected With Grid Using Permanent Magnet Synchronous Generator (PMSG)

This paper deals with permanent magnet synchronous generator (PMSG) based wind energy conversion system (WECS) integrated with grid with two back to back connected converters with a common DC link. The aim of this research is to model control of direct driven 1.5 MW wind turbine permanent magnetic synchronous generator (PMSG) which feeds alternating current (AC) power to the utility grid .The machine side converter is used to extract maximum power from the wind. In this paper a study of WECS is done by using a constant speed direct-driven wind turbine in Matlab. Moreover, by maintaining the dc link voltage at its reference value, the output ac voltage of the inverter can be kept constant irrespective of variations in the wind speed and load. An effective control techniques to extract maximum power from wind turbine is maximum power point tracking controller (MPPT), grid side controller also called voltage controller, pitch controller, phase lock loop controller (PLL) also used in this project, transformer used for isolation purpose, crow bar circuit used for protection the whole system. KEYWORDS-Permanent magnet synchronous generator(PMSG), wind energy conversion system(WECS), back to back PWM converter IGBT based, DC link capacitor, Direct-Driven, MPPT controller, PLL loop, generator side converter control, grid side converter control, pitch controller, crow bar protection and transformer.