전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제17권5호
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  • Pages.409-415
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  • 2012
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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단상 PV 인버터용 온라인 데드타임 보상기 연구

A New On-Line Dead-Time Compensator for Single-Phase PV Inverter

  • 투고 : 2010.08.03
  • 심사 : 2012.08.08
  • 발행 : 2012.10.20
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초록

This paper presents a new software-based on-line dead-time compensation technique for a single-phase grid-connected photovoltaic (PV) inverter system. To prevent a short circuit in the inverter arms, a switching delay time must be inserted in the pulse width modulation (PWM) signals. This causes the dead-time effect, which degrades the system performance around zero-crossing point of the output current. To reduce the dead-time effect around the zero-crossing point of grid current, a harmonic mitigation of grid current is used as an additional part of the synchronous frame current control scheme. This additional task mitigates the harmonic components caused by the dead-time from the grid current. Simulation and experimental results are shown to verify the effectiveness of the proposed dead-time compensation method in the single-phase grid-connected inverter system.

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참고문헌

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피인용 문헌

  1. Advanced Control of Three-Phase Four-Wire Inverters using Feedback Linearization under Unbalanced and Nonlinear Load Conditions vol.18, pp.4, 2013, https://doi.org/10.6113/TKPE.2013.18.4.333