Title :
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
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;
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
DOI :
10.1109/LESCPE.2007.4437389
