Coordinated Secondary Control for Balanced Discharge Rate of Energy Storage System in Islanded Microgrids

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Abstract

A coordinated secondary control based on a novel autonomous currents sharing control strategy for balanced discharge rate of energy storage systems in islanded microgrid (MG) is proposed in this paper. The coordinated secondary controller is able to regulate the output power of distributed generating (DG) systems according to their state-of-charge by adjusting the virtual resistances of their voltage controlled inverters. This controller can not only provide the faster response and accurate output current sharing control, but also avoid the potential operation failure resulting from the over current and unintentional outage of DGs. Thus, the stability and reliability of islanded MG can be improved. The eigenvalues and root locus with the proposed controller are presented to design the parameters as well as analyzing the system stability. Simulation results based on Matlab/simulink are presented in order to verify the effectiveness of the proposed controller.
Original languageEnglish
Title of host publicationProceedings of the 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)
Number of pages7
PublisherIEEE Press
Publication date2015
Pages475 - 481
DOIs
Publication statusPublished - 2015
Event9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015) - Seoul, Korea, Republic of
Duration: 1 Jun 20155 Jun 2015

Conference

Conference9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015)
CountryKorea, Republic of
CitySeoul
Period01/06/201505/06/2015

Keywords

  • Coordinated secondary control
  • Microgrid
  • Balanced discharge rate
  • Energy storage system

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    Guan, Y., Guerrero, J. M., & Quintero, J. C. V. (2015). Coordinated Secondary Control for Balanced Discharge Rate of Energy Storage System in Islanded Microgrids. In Proceedings of the 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) (pp. 475 - 481). IEEE Press. https://doi.org/10.1109/ICPE.2015.7167828