Title :
A novel soft-switching power factor correction AC/DC converter
Author :
Wu, Wenkai ; Gu, Wei ; Qiu, Weihong ; Batarseh, Issa
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Central Florida Univ., Orlando, FL, USA
Abstract :
In this paper, a novel efficiency improved single stage soft switching AC/DC converter is presented. The converter utilizes the leakage inductance of the output transformer and the capacitance of the switches to provide zero voltage switching (ZVS) condition for the main switch. Based on a specific design example for a 100 W converter at 28 V DC and 500 kHz, a prototype has been built to experimentally verify the theoretical analysis. It is shown that with the additional voltage clamped auxiliary switch, the converter can operate in ZVS condition with keeping near unity power factor
Keywords :
AC-DC power convertors; capacitance; inductance; magnetic leakage; power factor correction; switching circuits; 100 W; 110 V; 28 V; 3.6 A; 500 kHz; 60 Hz; ZVS; efficiency improvement; leakage inductance; near unity power factor; output transformer; single stage soft switching AC/DC converter; switch capacitance; voltage clamped auxiliary switch; zero voltage switching; Capacitors; DC-DC power converters; Inductance; Power factor correction; Power system harmonics; Reactive power; Switched-mode power supply; Switches; Switching converters; Zero voltage switching;
Conference_Titel :
Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-7150-X
DOI :
10.1109/MWSCAS.2001.986349
