Title :
Analysis of the novel soft-switching buck-boost type AC-DC converter using magnetic coupling
Author :
Matsuo, Hirofumi ; Watanabe, Hamo ; Kurokawa, Fujio ; Tu, Lishan
Author_Institution :
Nagasaki Univ., Japan
Abstract :
This paper presents the design-oriented analysis of the novel soft-switching buck-boost type AC-DC converter with high power efficiency and high power factor. In this AC-DC converter, the power factor and input current harmonic distortion are improved by using the third winding of the energy-storage reactor, and the high power efficiency is achieved by the soft-switching operation of the main power switch and output rectifier diode. The circuit operation of the AC-DC converter is defined by using the equivalent circuit model and its performance characteristics are analyzed theoretically. The theoretical results are confirmed by the experimental ones. As a result, it is revealed that the proposed AC-DC converter satisfies the maximum limits of the input current harmonic distortion in IEC 61000-3-2 Class D and that its power efficiency is 95% at the rated load current
Keywords :
AC-DC power convertors; equivalent circuits; harmonic distortion; power conversion harmonics; power factor correction; rectifying circuits; switching circuits; 95 percent; IEC 61000-3-2 Class D; design-oriented analysis; efficiency; energy-storage reactor; equivalent circuit model; input current harmonic distortion; magnetic coupling; performance characteristics; power factor; soft-switching buck-boost type AC-DC power converter; AC-DC power converters; Couplings; Diodes; Harmonic distortion; Inductors; Magnetic analysis; Reactive power; Rectifiers; Switched capacitor circuits; Switches;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.880488
