Title :
A novel ZVT PWM Cuk power-factor corrector
Author :
Tseng, Ching-Jung ; Chen, Chern-Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
8/1/1999 12:00:00 AM
Abstract :
A novel zero-voltage-transition (ZVT) pulsewidth modulated (PWM) Cuk power-factor corrector (PFC) is proposed to achieve unity power factor under zero-voltage-switching (ZVS) operations. In the proposed ZVT PWM Cuk PFC, not only the power switch, but also the power diode, commutate under ZVS. The proposed topology has the shortest ZVT time and, thus, the shortest minimum duty cycle compared with other ZVT PWM topologies. The resonant inductor can be discharged regardless of the state of the main switch. Extremely short ZVT time and robust discharge of the resonant inductor make the proposed topology well qualified for variable-duty and high switching-frequency applications. Analytical studies, design rules, and experimental waveforms of the ZVT PWM Cuk PFC are presented in detail
Keywords :
DC-DC power convertors; PWM power convertors; commutation; power factor correction; power semiconductor diodes; switching circuits; ZVS; ZVT PWM Cuk power-factor corrector; commutation; high switching-frequency applications; power diode; power switch; resonant inductor; robust discharge; shortest minimum duty cycle; unity power factor; variable-duty applications; zero-voltage-switching; Diodes; Inductors; Pulse width modulation; Reactive power; Resonance; Robustness; Space vector pulse width modulation; Switches; Topology; Zero voltage switching;
Journal_Title :
Industrial Electronics, IEEE Transactions on
