Power-management strategies for a grid-connected PV-FC hybrid system

Loc Nguyen Khanh, Jae Jin Seo, Yun Seong Kim, Dong Jun Won

Research output: Contribution to journalArticlepeer-review

160 Scopus citations

Abstract

This paper presents a method to operate a grid connected hybrid system. The hybrid system composed of a Photovoltaic (PV) array and a Proton exchange membrane fuel cell (PEMFC) is considered. The PV array normally uses a maximum power point tracking (MPPT) technique to continuously deliver the highest power to the load when variations in irradiation and temperature occur, which make it become an uncontrollable source. In coordination with PEMFC, the hybrid system output power becomes controllable. Two operation modes, the unit-power control (UPC) mode and the feeder-flow control (FFC) mode, can be applied to the hybrid system. The coordination of two control modes, the coordination of the PV array and the PEMFC in the hybrid system, and the determination of reference parameters are presented. The proposed operating strategy with a flexible operation mode change always operates the PV array at maximum output power and the PEMFC in its high efficiency performance band, thus improving the performance of system operation, enhancing system stability, and decreasing the number of operating mode changes.

Original languageEnglish
Article number5466107
Pages (from-to)1874-1882
Number of pages9
JournalIEEE Transactions on Power Delivery
Volume25
Issue number3
DOIs
StatePublished - Jul 2010

Bibliographical note

Funding Information:
Manuscript received July 13, 2009; revised December 10, 2009, March 10, 2010. First published May 18, 2010; current version published June 23, 2010. This work was supported by an INHA University Research Grant. Paper no. TPWRD-00523-2009. The authors are with the Department of Electrical Engineering, Inha University, Incheon 402-751, Korea (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TPWRD.2010.2047735

Keywords

  • Distributed generation
  • fuel cell
  • hybrid system
  • microgrid
  • photovoltaic
  • power management

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