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Controller Design of a Novel Power Conditioning System with an Energy Storage Device for Renewable Energy Sources under Grid-Connected Operation

  • Park, Sun-Jae (Dept. of Electrical Engineering, Soongsil University) ;
  • Lee, Hwa-Seok (Dept. of Electrical Engineering, Soongsil University) ;
  • Kim, Chan-In (Dept. of Electrical Engineering, Soongsil University) ;
  • Park, Joung-Hu (Dept. of Electrical Engineering, Soongsil University) ;
  • Jeon, Hee-Jong (Dept. of Electrical Engineering, Soongsil University) ;
  • Ryeom, Jeongduk (Dept. of Electrical Engineering, Soongsil University)
  • Received : 2012.03.26
  • Published : 2013.05.20

Abstract

As a result of the depletion of fossil fuels and environmental contamination, it has become important to use renewable energy. For the stable utilization of renewable energy sources, energy storage devices must be used. In addition, renewable and distributed power sources with energy storage devices must operate stably under grid-connected mode. This paper proposed dynamic response modeling for renewable power generation systems including a charger/discharger with an energy storage device in order to derive a method to guarantee stable operation while fully utilizing the energy from the energy storage device. In this paper, the principle operation and design guidelines of the proposed scheme are presented, along with a performance analysis and simulation results using MATLAB and PSIM. Finally, a hardware prototype of a 1kW power conditioning system with an energy storage device has been implemented for experimental verification of the proposed converter system.

Acknowledgement

Supported by : Korea Institute of Energy Technology Evaluation and Planning(KETEP)

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