Journal of Power Electronics

  • 제21권12호
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  • Pages.1834-1844
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  • 2021
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Decentralized control strategy for storage systems in islanded microgrids

  • 투고 : 2021.04.23
  • 심사 : 2021.09.23
  • 발행 : 2021.12.20
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a decentralized control strategy for the distributed storage (DS) systems of the islanded microgrid composed of distributed generations (DGs) and DSs. Each of the DSs consists of a bidirectional DC-DC converter cascaded with a three-phase inverter. Control strategies for DSs and DGs are based on droop control. The line frequency of the point of common coupling (PCC) is an agent to regulate the active power of the DS. Due to the power mismatch among the supplies and load demands of DGs, the frequency controller of the DS generates its active power reference. In addition, the frequency deviation caused by droop control can be reduced. Reactive load power is almost equally shared by all of the constituent units. Therefore, the DS works by charging or discharging the energy storage devices. Simulation and experimental results are provided to verify the effectiveness of the proposed control strategy.

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참고문헌

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