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《Journal of Liaoning University of Technology(Natural Science Edition)》 2011-01
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Research on Compound Type High Efficiency Single-phase Photovoltaic Inverter

TANG Wen-jun,LU Bao-chun,ZHUANG Ming-zhao,CHEN Long(Electron & Information Engineering College,Liaoning University of Technology,Jinzhou 121001,China)  
To further enhance the traditional single-phase PV inverter efficiency,a kind of full-bridge structure of compound type high efficiency single-phase photovoltaic inverter was proposed for design.The inverter adopts full bridge structure,which was improved on the switching element and the control strategy.The choice of the IGBT of low frequency arm of 50 Hz,and the choice of MOSFET high-frequency arm were all made in base frequency PWM and a single polarity SPWM under the compound-control,which can not only play to their best performance and reliable output sine wave,but also can reduce a pair of bridge arms switching losses and improve inverter efficiency.The simulation result of the PSIM software verifies that the improved single-phase photovoltaic inverter has reliable output signal and has also got a substantial increase in its efficiency.
【CateGory Index】: TM464
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