전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제17권3호
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  • Pages.213-221
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  • 2012
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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IPMSM 파라미터 변화에 영향 받지 않는 데드타임 및 인버터 비선형성 보상기법

Compensation Scheme for Dead Time and Inverter Nonlinearity Insensitive to IPMSM Parameter Variations

  • Park, Dong-Min (Dept. of Electrical Engineering and Information System Engineering, Seoul National University of Science and Technology) ;
  • Kim, Kyeong-Hwa (Dept. of Electrical Engineering and Information System Engineering, Seoul National University of Science and Technology)
  • 투고 : 2012.01.26
  • 심사 : 2012.02.29
  • 발행 : 2012.06.20
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초록

In a PWM inverter-fed IPMSM (Interior Permanent Magnet Synchronous Motor) drive, a dead time is inserted to prevent a breakdown of switching device caused by the short-circuit of DC link. This distorts the inverter output voltage resulting in a current distortion and torque ripple. In addition to the dead time, nonlinearity exists in switching devices of the PWM inverter, which is generally dependent on operating conditions such as the temperature, DC link voltage, and current. The voltage disturbance caused by the dead time and inverter nonlinearity directly influences on the inverter output performance, and it is known to be more severe at low speed. In this paper, a new compensation scheme for the dead time and inverter nonlinearity under the parameter variation is proposed for a PWM inverter-fed IPMSM drive. The overall system is implemented using DSP TMS320F28335 and the validity of the proposed algorithm is verified through the simulation and experiments.

키워드

참고문헌

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