Three-Phase Soft-Switched Quasi Resonant DC Link Inverter for AC Motor Drives with Different Clamps
نویسندگان
چکیده
A soft-switched inverter is derived from the passively clamped quasi-resonant link circuit with three different clamps: coupled inductor, diode clamp and coupled inductor and capacitor. The proposed soft-switching inverter is formed from the traditional pulse-width modulated (PWM) inverter by simply augmenting with auxiliary resonant circuits, and the soft switching is achieved through applying PWM switching control signals with suitable delays for the switches. Only one auxiliary switch is used to generate zerovoltage instants for the inverter switching devices. The designed soft-switching inverter is used for powering an induction motor drive to test its effectiveness. The proposed drive system is modeled and its performance is simulated in PSpice. Several results are presented to illustrate the performance of the proposed inverter topology with three different clamps.
منابع مشابه
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