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

Volume

3

fYear

2000

fDate

2000

Firstpage

1088

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International

Conference_Location

Beijing

Print_ISBN

7-80003-464-X

Type

conf

DOI

10.1109/IPEMC.2000.882981

Filename

882981