Title :
ZCS-PWM full-wave boost rectifier with unity power factor and low conduction losses
Author :
Hsieh, Guan-Chyun ; Wang, Chien-Ming
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
fDate :
8/1/1999 12:00:00 AM
Abstract :
A full-wave boost rectifier (FWBR) realized by zero-current-switching pulsewidth-modulation (ZCS-PWM) control to achieve unity power factor is presented. Two resonant cells are configured in the presented FWBR to perform ZCS in the power switches and to preregulate the input current to follow up the input voltage. Only one diode and one power switch loss are included in the proposed FWBR during the rectification. Four transition states for describing the behavior of the ZCS-PWM FWBR in one switching period are described. A small-signal model is built for the system analysis, and an average-current-mode control is employed to formulate the input current waveform with low harmonics. The control strategy and design consideration are programmed to realize a 600-W ZCS-PWM FWBR, which provides high power efficiency of 95% and high power factor over 0.99
Keywords :
DC-DC power convertors; PWM power convertors; electric current control; losses; power factor correction; rectifying circuits; resonant power convertors; switching circuits; 600 W; 95 percent; ZCS-PWM full-wave boost rectifier; average-current-mode control; high power efficiency; high power factor; input current preregulation; input current waveform; input voltage; low conduction losses; low harmonics; power switch loss; power switches; pulsewidth-modulation control; resonant cells; small-signal model; switching period; transition states; unity power factor; zero-current-switching; Capacitors; Diodes; Power harmonic filters; Power system modeling; Reactive power; Rectifiers; Resonance; Switches; Voltage; Zero current switching;
Journal_Title :
Industrial Electronics, IEEE Transactions on
