Fast tracking control of three-phase PWM rectifier for microturbine

Abstract

Microturbine generator system (MTGS) is a new energy source system. Because of its efficiency, mobility, and small in size, it is widely applied in many fields. When it is operating, the high-frequency alternating current of permanent magnet synchronous generator generating must be rectified and inverted into 50Hz AC to meet the user's requirements. As we know when MTGS output AC voltage is variable, the voltage in DC link is also variable in diode rectifier and the generator current is distorted so the power factor is low. Therefore, PWM rectifier is utilized to regulate voltage and power factor based on fast tracking control scheme. The results of simulation and experiment show that the stable DC link voltage and high power factor can be achieved and the low frequency component harmonic is eliminated. © 2012 Springer-Verlag.