Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Grid-Tied and Stand-Alone Operation of Distributed Generation Modules Aggregated by Cascaded Boost Converters

  • Noroozian, Reza (Dept. of Electrical Engineering, University of Zanjan) ;
  • Gharehpetian, Gevorg (Dept. of Electrical Engineering, Amirkabir University of Technology) ;
  • Abedi, Mehrdad (Dept. of Electrical Engineering, Amirkabir University of Technology) ;
  • Mahmoodi, Mishel (Dept. of Electrical Engineering, Amirkabir University of Technology)
  • Published : 2010.01.20
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Abstract

This paper presents the modeling, control and simulation of an interconnection system (ICS) of cascaded distributed generation (DG) modules for both grid-tied and stand-alone operations. The overall configuration of the interconnection system is given. The interconnection system consists of a cascaded DC/DC boost converters and a DC/AC inverter. Detailed modeling of the interconnection system incorporating a cascaded architecture has not been considered in previous research. In this paper, suitable control systems for the cascaded architecture of power electronic converters in an interconnection system have been studied and modeled in detail. A novel control system for DC/DC boost converters is presented based on a droop voltage controller. Also, a novel control strategy for DC/AC inverters based on the average large signal model to control the aggregated DG modules under both grid-tied and stand-alone modes is demonstrated. Simulation results indicate the effectiveness of the proposed control systems.

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References

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