Title :
A three-phase soft-switching converter with high power factor
Author :
Chen, Guocheng ; Taniguchi, Katsunori ; Nakamura, Hiroto
Author_Institution :
Sch. of Autom., Shanghai Univ., China
Abstract :
A new PWM converter based on soft-switching is introduced. The converter uses a minimum number of devices, and requires less switching operations than conventional techniques. Switching is realized solely in a ZVS mode, therefore the loss is reduced and EMI (electromagnetic interference) suppressed. The paper analyzes the operation of ZVS (zero voltage switching), discusses methods for maintaining a unity power factor and constant DC voltage. Changing the modulation index M and the phase angle θ keeps the input current in phase with the voltage. It also keeps the current sinusoidal, and ensures a constant output voltage
Keywords :
PWM power convertors; equivalent circuits; power factor correction; switching circuits; PWM converter; ZVS; constant DC voltage; electromagnetic interference; high power factor; modulation index; phase angle; sinusoidal current; three-phase soft-switching converter; zero voltage switching; Electromagnetic interference; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Resonance; Switching circuits; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.882981
