A New LCL- Resonant Push-Pull DC-DC Converter for Inverter Applications

Author

Yuan, Yisheng ; Chang, Liuchen ; Song, Pinggang

Author_Institution

East China Jiaotong Univ., Nanchang

fYear

2007

fDate

10-12 Oct. 2007

Firstpage

261

Lastpage

264

Abstract

A new LCL resonant DC-DC converter topology is presented in which the resonant LCL components are located at the primary side of the push-pull converter. The power switches of the push-pull converter operate in turn at an approximately fixed frequency. The resonant frequency is set to even times of the switching frequency. Primary MOSFET switches achieve quasi-zero-voltage switching (ZVS) conditions due to commutations of the magnetizing current at the transformer secondary side. The converter is suitable for systems with a low input voltage and large input current as powered by batteries etc. A 1 kW converter system with 12 VDC input and 360 VDC output was developed and tested, the result shows the proposed DC-DC converter achieves 92% efficiency. The experimental waveforms agree well with the theory analysis.

Keywords

DC-DC power convertors; commutation; field effect transistor switches; invertors; power semiconductor switches; resonant power convertors; switching convertors; zero voltage switching; LCL-resonant push-pull DC-DC converter; MOSFET switches; commutations; converter topology; magnetizing current; power 1 kW; power switches; quasizero-voltage switching; voltage 12 V; voltage 360 V; DC-DC power converters; Frequency conversion; Inverters; MOSFET circuits; Magnetic switching; Resonance; Resonant frequency; Switching converters; Switching frequency; Topology; DC-DC converter; Push-pull topology; Resonant converter; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, 2007 Large Engineering Systems Conference on

Conference_Location

Montreal, Que.

Print_ISBN

978-1-4244-1583-0

Electronic_ISBN

978-1-4244-1583-0

Type

conf

DOI

10.1109/LESCPE.2007.4437389

Filename

4437389