Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Sliding Mode Controller for Torque and Pitch Control of PMSG Wind Power Systems

  • Lee, Sung-Hun (Dept. of Electricity and Electronic Engineering, Republic of Korea Naval Academy) ;
  • Joo, Young-Jun (ASRI, School of Electrical Engineering and Computer Science, Seoul National University) ;
  • Back, Ju-Hoon (School of Robotics, Kwangwoon University) ;
  • Seo, Jin-Heon (ASRI, School of Electrical Engineering and Computer Science, Seoul National University) ;
  • Choy, Ick (School of Robotics, Kwangwoon University)
  • Received : 2010.11.16
  • Published : 2011.05.20
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Abstract

We propose a torque and pitch control scheme for variable speed wind turbines with permanent magnet synchronous generator (PMSG). A torque controller is designed to maximize the power below the rated wind speed and a pitch controller is designed to regulate the output power above the rated wind speed. The controllers exploit the sliding mode control scheme considering the variation of wind speed. Since the aerodynamic torque and rotor acceleration are difficult to measure in practice, a finite time convergent observer is designed which estimates them. In order to verify the proposed control strategy, we present stability analysis as well as simulation results.

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References

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