Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Stand-Alone Wind Energy Conversion System with an Asynchronous Generator

  • Singh, Bhim (Dept. of Electrical Engineering, Indian Institute of Technology) ;
  • Sharma, Shailendra (Dept. of Electrical Engineering, Indian Institute of Technology)
  • Received : 2010.04.19
  • Published : 2010.09.20
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Abstract

This paper deals with a stand-alone wind energy conversion system (WECS) with an isolated asynchronous generator (IAG) and voltage and frequency (VF) control feeding three-phase four-wire loads. The reference generator currents are estimated using the instantaneous symmetrical component theory to control the voltage and frequency of an IAG system. A three-leg voltage source converter (VSC) with an isolated star/delta transformer is used as an integrated VSC. An integrated VSC with a battery energy storage system (BESS) is used to control the active and reactive powers of the WECS. The WECS is modeled and simulated in MATLAB using the Simulink and the Sim Power System (SPS) toolboxes. The proposed VF controller functions as a voltage and frequency regulator, a load leveler, a load balancer and a harmonic eliminator in the WECS. A comparison is made on the rating of the VSC with and without ac capacitors connected at the terminals of an IAG. Simulation and test results are presented to verify the control algorithm.

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References

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