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A Study of Wind Energy Conversion System by a Secondary Control Hydrostatic Transmission

2차측 제어 정유압 변속기를 이용한 풍력발전시스템에 관한 연구

  • Do, H.T. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Ahn, K.K. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan)
  • Received : 2012.09.29
  • Accepted : 2013.02.27
  • Published : 2013.03.01

Abstract

Wind energy has been more and more important and contributive in the energy utilization of the world. This paper proposed a novel method for Wind Energy Conversion System (WECS), in which a secondary control hydrostatic transmission (SC-HST) with two hydraulic accumulators, were employed for wind energy conversion system. This approach can absorb the excessive power of turbine, keep the generator from over-speed and maintain the speed of generator in low speed of turbine. A PID controller was designed for speed control to track a predefined speed. The simulation results indicated that the speed of the generator was ensured with the relative error less than 2%; and the efficiency of the proposed system was 70.4%.

Keywords

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