Journal of Power Electronics

  • 제18권4호
  • /
  • Pages.1223-1234
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  • 2018
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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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Mitigation of Voltage Unbalances in Bipolar DC Microgrids Using Three-Port Multidirectional DC-DC Converters

  • Ahmadi, Taha (Department of Electrical and Electronics Engineering, Lorestan University) ;
  • Rokrok, Esmaeel (Department of Electrical and Electronics Engineering, Lorestan University) ;
  • Hamzeh, Mohsen (School of Electrical and Computer Engineering, College of Engineering, University of Tehran)
  • 투고 : 2017.11.09
  • 심사 : 2018.02.13
  • 발행 : 2018.07.20
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초록

In this paper, a new three-port multidirectional DC-DC converter is proposed for integrating an energy storage system (ESS) to a bipolar DC microgrid (BPDCMG). The proposed converter provides a voltage-balancing function for the BPDCMG and adjusts the charge of the ESS. Thanks to the multi-functional operation of the proposed converter, the conversion stages of the system are reduced. In addition, the efficiency and weight of the system are improved. Therefore, this converter has a significant capability when it comes to use in portable BPDCMGs such as electric DC ships. The converter modes are analyzed and small-signal models of the converter in each of the independent modes are extracted. Finally, comprehensive simulation studies are carried out and a BPDCMG laboratory prototype is implemented in order to verify the performance of the proposed voltage balancer using the burst mode control scheme.

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참고문헌

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