Title :
A new ZVS-PWM unity power factor rectifier with reduced conduction losses
Author :
de Souza, Alexandre Ferrari ; Barbi, Ivo
Author_Institution :
Dept. of Electr. Eng., Federal Univ. of Santa Catarina, Florianopolis, Brazil
fDate :
11/1/1995 12:00:00 AM
Abstract :
This paper introduces a new single-phase high power factor rectifier, which features regulation by conventional PWM, soft commutation and instantaneous average line current control. Furthermore, thanks to the use of a single converter, instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter, a significant reduction in the conduction losses is achieved. A prototype rated at 1.6 kW, operating at 70 kHz, with an input AC voltage of 220 Vrms and an output voltage of 400 VDC has been implemented in the laboratory. An efficiency of 97.8 % at 1.6 kW has been measured. Analysis, design, and the control circuitry are also presented in the paper
Keywords :
DC-DC power convertors; PWM power convertors; commutation; electric current control; losses; power factor; rectifying circuits; switching circuits; 1.6 kW; 220 V; 400 V; 70 kHz; 97.8 percent; ZVS-PWM unity power factor rectifier; conduction losses reduction; high power factor; instantaneous average line current control; reduced conduction losses; single-phase; soft commutation; zero voltage switching; MOSFET circuits; Power MOSFET; Power harmonic filters; Power supplies; Power system harmonics; Pulse width modulation; Reactive power; Rectifiers; Semiconductor diodes; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
