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

  • 제27권4호
  • /
  • Pages.339-347
  • /
  • 2022
  • /
  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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영구자석 동기모터 진동 및 과전류 저감을 위한 능동단락회로 제어 기법

Active Short Circuit Control Method to Reduce Overcurrent and Oscillation Current in PMSM

  • Choi, Jong-Won (Dept. of Electrical and Electronic Engineering, Hannam University) ;
  • Kim, Yoon-Jae (Dept. of Electrical Engineering, Hoseo University)
  • 투고 : 2022.01.20
  • 심사 : 2022.03.11
  • 발행 : 2022.08.20
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초록

This study proposes the mitigation method for overcurrent and oscillation motor current in an active short-circuit operation. This operation is attracting attention as the safe state of electric vehicle traction inverters. However, the active short-circuit operation generates oscillation and overcurrent of motor currents during a transient state. The proposed method uses two different safe states in PMSM, such as active short circuit and freewheeling. The active short circuit is used for safe state in a steady state. To reduce the overshoot and oscillation, a freewheeling state is injected between active short-circuit operation by comparing the motor phase current with an analytically calculated steady-state motor current. Freewheeling state is only used in a transient state. The performance is demonstrated through simulations and experimental results. The peak current of the motor was reduced from 52 A to 40 A, and oscillation time was reduced.

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과제정보

이 논문은 2021학년도 한남대학교 학술연구비 지원에 의하여 연구되었음

참고문헌

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