The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Simplified SVPWM for Three Level Inverters to Eliminate Leakage Currents in Transformeless Photovoltaic Systems

무변압기형 태양광 시스템에서 누설전류를 제거하기 위한 3레벨 인버터의 단순 SVPWM

  • Ansari, Arsalan (Dept. of Electronics System Engineering, Hanyang University) ;
  • Kim, Hee-Jun (Dept. of Electronics System Engineering, Hanyang University)
  • Received : 2015.11.27
  • Accepted : 2016.01.07
  • Published : 2016.02.01
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Abstract

This paper proposes a simplified SVPWM for three level inverters in transformerless photovoltaic (PV) systems. With the proposed SVPWM the three level space vector (SV) diagram is divided into only six sectors as in conventional two level SV diagram in such a way that only seven SVs are used among all the available SVs of three level inverter. The main features of the proposed SVPWM are that it is simple to implement, less switching losses as compared to conventional SVPWM and most importantly it eliminates the leakage currents in transformerless PV systems. Detailed theoretical analysis of the proposed SVPWM are presented and verified by numerical simulations and experimental results.

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References

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