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

  • 제26권4호
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  • Pages.256-262
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  • 2021
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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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6상 영구자석 동기전동기의 고장대응운전을 위한 3상 구동시스템 전환 알고리즘

Three Phase Drive Transfer Algorithm for Fault Tolerance Control of Six-Phase PMSM

  • Kim, Seong-Hoon (Dept. of Electronic Engineering, Korea Nat'l University of Transportation) ;
  • Jang, Won-Jin (Dept. of Electronic Engineering, Korea Nat'l University of Transportation) ;
  • Cho, Kwan-Yuhl (Dept. of Electronic Engineering, Korea Nat'l University of Transportation) ;
  • Kim, Hag-Wone (Dept. of Electronic Engineering, Korea Nat'l University of Transportation)
  • 투고 : 2021.01.31
  • 심사 : 2021.04.01
  • 발행 : 2021.08.20
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초록

Six-phase motors can be used in industrial applications, such as an electric vehicle, due to their high reliability and low current magnitude per phase. An asymmetrical PMSM with two sets of three-phase windings is a commonly used structure for six-phase motors, with each winding set demonstrating a phase difference of 30°. Although the asymmetrical PMSM presents low torque ripples, its dynamic torque response deteriorates due to coupled components in the two three-phase windings. The decoupled VSD control is applied to eliminate the coupling effect. Load ratio control of two inverters for the six-phase PMSM is proposed in this study. DQ currents are controlled on the basis of two synchronous reference frames, and the six-phase drive system can be changed to a three-phase drive system when one inverter presents fault conditions. The operation and effectiveness of the proposed algorithm is verified through simulation and experiments. The six-phase drive system is transferred to a three-phase drive system by changing the current reference of the second DQ reference frame. Moreover, control of both torque and speed exhibits satisfactory performance before and after the mode change.

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과제정보

이 연구는 2020년 산업통산자원부 및 산업기술평가관리원(KEIT) 연구비('20011437')와 2021년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 에너지인력양성사업(No. 20184030202270)으로 지원받아 수행한 인력양성 성과입니다.

참고문헌

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