Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Utility-Connected Solar Power Conditioner Using Edge-Resonant Soft Switching Duty Cycle Sinewave Modulated Inverter Link

  • Ogura, Koki (The Graduate School of Science & Eng., Yamaguchi University) ;
  • Chandhaket, Srawouth (The Graduate School of Science & Eng., Yamaguchi University) ;
  • Nakaoka, Mutsuo (The Graduate School of Science & Eng., Yamaguchi University) ;
  • Terai, Haruo (Home Appliance & Housing Electronics Research Lab., Matsushita Electric Industrial Co., Ltd.) ;
  • Sumiyoshi, Shinichiro (Home Appliance & Housing Electronics Research Lab., Matsushita Electric Industrial Co., Ltd.) ;
  • Kitaizumi, Takeshi (Home Appliance & Housing Electronics Research Lab., Matsushita Electric Industrial Co., Ltd.) ;
  • Omori, Hideki (Home Appliance & Housing Electronics Research Lab., Matsushita Electric Industrial Co., Ltd.)
  • Published : 2002.07.01
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Abstract

The utility interfaced sinewave modulation Inverter for the solar photovoltaic power conditioner with a high frequency transformer is presented for residential applications. As compared with the conventional full-bridge hard switching slnewave PWM inverter with a high frequency link, the simplest single-ended edge-resonant soft switching sinewave inverter with a sinewave duty cycle pulse control scheme is implemented, resulting in size and weight reduction, low cost and high efficiency This paper presents a prototype system of the sinewave zero voltage soft switching sinewave inverter for solar power conditioner, along with its operating principle and unique features. In addition to these, this paper discusses a control implementation to deliver high quality output current. Major design of each component and the power loss analysis under actual power processing is also discussed and evaluated from an experimental point of view A newly developed utility-connected sinewave power conditioning circuit which achieves 92.5% efficiency under 4kW output is demonstrated.

Keywords

References

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