High-efficiency inverter with H6-type configuration for photovoltaic non-isolated ac module applications

A novel, high-efficiency inverter using MOSFETs for all active switches is presented for photovoltaic, non-isolated, ac module applications. The proposed H6-type configuration features high efficiency over a wide load range, low ground leakage current, no need for split capacitors, and low output ac...

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Published in2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) pp. 1056 - 1061
Main Authors Yu, Wensong, Lai, Jih-Sheng, Qian, Hao, Hutchens, Chris, Zhang, Jianhui, Lisi, Gianpaolo, Djabbari, Ali, Smith, Greg, Hegarty, Tim
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2010
Subjects
Capacitors
Hardware
Leakage current
MOSFETs
Photovoltaic systems
Power supplies
Prototypes
Pulse width modulation inverters
Solar power generation
Switches
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Summary:A novel, high-efficiency inverter using MOSFETs for all active switches is presented for photovoltaic, non-isolated, ac module applications. The proposed H6-type configuration features high efficiency over a wide load range, low ground leakage current, no need for split capacitors, and low output ac-current distortion. The detailed power stage operating principles, PWM scheme, and novel bootstrap power supply for the proposed inverter are described. Experimental results of a 300 W hardware prototype show that not only are MOSFET body diode reverse-recovery and ground leakage current issues alleviated in the proposed inverter, but also that 98.3% maximum efficiency and 98.1% European Union efficiency are achieved.
ISBN:9781424447824
1424447828
ISSN:1048-2334
DOI:10.1109/APEC.2010.5433372