Title :
Zero-voltage-transition converters using a simple magnetic feedback technique
Author :
Gegner, Joel P. ; Lee, C.Q.
Author_Institution :
Power Electron. Res. Lab., Illinois Univ., Chicago, IL, USA
Abstract :
This paper presents a simple active energy recovery circuit which can be magnetically coupled to any isolated or nonisolated switching power converter to achieve zero-voltage switching (ZVS) of the power devices. Converters using this soft-switching technique exhibit low voltage and current stresses characteristic of hard-switched PWM converters, yet achieve ZVS thus enabling higher frequency operation. Based on this technique, an experimental 300 W, 250 kHz boost converter is designed for offline power factor correction. Steady-state analysis as well as simulations are also presented
Keywords :
equivalent circuits; feedback; network analysis; power convertors; power factor correction; power transistors; switching circuits; 250 kHz; 300 W; ZVS; active energy recovery circuit; boost converter; current stress; magnetic feedback technique; offline power factor correction; operation; power transistors; simulations; soft-switching; steady-state analysis; switching power converter; voltage stress; zero-voltage switching; Coupling circuits; Feedback; Low voltage; Magnetic circuits; Magnetic devices; Magnetic switching; Stress; Switching circuits; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349676
