Title :
Use of soft-switching principles in PWM voltage inverters design
Author :
Forest, F. ; Gonzalez, I. ; Costa, F.
Author_Institution :
Lab. d´´Electricite Signaux et Robotique, Cachan, France
Abstract :
Soft-switching principles (ZCS-ZVS), classically used in DC-to-DC converters, are now introduced in voltage inverters, for medium or high frequency applications. This paper presents, in a first part, an attempt of state-of-the-art in this power conversion field where it appears that most of researchers are working on a ZVS mode or a mixed ZVS-ZCS mode. So, in the second part, the authors propose ZCS solutions, allowing good operating conditions for devices such as the IGBT. Experimental results on a 180 A-20 kHz inverter-leg supplied by 380 V rectified mains with IGBT modules are presented. An original experimental test circuit allows a direct losses measurement and comparison between a classical PWM inverter-leg without snubber and the ZCS solution
Keywords :
insulated gate bipolar transistors; invertors; network synthesis; power transistors; pulse width modulation; switching circuits; 180 A; 20 kHz; 380 V; IGBT; PWM; VSI; ZCS; ZVS; design; direct losses measurement; network synthesis; power transistors; soft switching; state-of-the-art;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
