Title :
A PWM Family of ZVT Self-resonant Converters with Improved Features
Author :
Menegáz, Paulo J M ; Vieira, José L F ; Bruinsma, Johannes A. ; Rey, Joost P. ; Simonetti, Domingos S L
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Espirito Santo, Vitoria
Abstract :
This paper presents a PWM family of ZVT self-resonant converters that use a magnetic coupling to accomplish the minimum total losses point of the auxiliary switch. Their great advantage is the overall size reduction, because allows to reduce the auxiliary switch heatsink as well as the number of magnetic components of the circuit, once the auxiliary inductor is incorporated into the main one. This fact also reduces the number of radiated EMI sources. A design procedure and a design example are presented, as well as experimental results obtained from a 500 W, 120/300 VDC, 100 kHz prototype of the boost converter, confirming the operation of the proposal and the benefits obtained by its use
Keywords :
PWM power convertors; design engineering; electromagnetic interference; heat sinks; inductors; magnetic circuits; resonant power convertors; switching convertors; zero voltage switching; 100 kHz; 120 V; 300 V; 500 W; PWM family; ZVT self-resonant converters; auxiliary inductor; auxiliary switch heatsink; boost converter; magnetic circuit; magnetic coupling; overall size reduction; radiated EMI sources; Coupling circuits; Electromagnetic interference; Inductors; Magnetic circuits; Magnetic switching; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581781
