Title :
A high efficiency and high power factor rectifier using the BHB type AC-DC converter with the transformer of asymmetrical secondary windings
Author :
Watanabe, Haruo ; Matsuo, Hirofiuni
Abstract :
A high efficiency and high power factor AC-DC rectifier is proposed, which employs the combined circuit of boost and half-bridge (BHB) DC-DC converter that was recently developed to realize the high efficient DC-DC converter with low output voltage and is applied to AC-DC rectifier in this paper. The mechanism of reducing the commercial low frequency output voltage ripple is clarified and using a transformer of asymmetrical secondary windings, the current ripple through output inductor can be reduced. Furthermore, a novel rectifier circuit is proposed, which is used instead of bridge-diode rectifier for improving the power efficiency. As a result, the power efficiency is improved to 90.9% and low input current harmonic distortion factor satisfies IEC 61000-3-2 Class D when the AC input voltage and DC output are 100 V and 54 V/2 A, respectively
Keywords :
AC-DC power convertors; DC-DC power convertors; bridge circuits; harmonic distortion; inductors; power conversion harmonics; power factor correction; rectifying circuits; transformer windings; transformers; 100 V; 2 A; 54 V; 90.9 percent; AC input voltage; AC-DC rectifier; DC output; IEC 61000-3-2 Class D; asymmetrical secondary windings; boost and half-bridge DC-DC converter; bridge-diode rectifier; current ripple reduction; high efficiency; high power factor; low frequency output voltage ripple reduction; low input current harmonic distortion factor; low output voltage; power efficiency improvement; transformer; Analog-digital conversion; Circuits; DC-DC power converters; Frequency; Harmonic distortion; IEC standards; Inductors; Low voltage; Reactive power; Rectifiers;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Conference_Location :
Cairns, Qld.
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1023045
