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

  • 제12권3호
  • /
  • Pages.205-212
  • /
  • 2007
  • /
  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지

4-레벨 콘버터를 이용한 SRM의 순시 토오크 제어 기법

Direct Instantaneous Torque Control of SRM using 4-level Converter

  • 이동희 (경성대 전기전자메카트로닉스 공학부) ;
  • 이상훈 (경성대 공학기술연구소) ;
  • 안진우 (경성대 전기전자메카트로닉스공학부)
  • 발행 : 2007.06.20
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 토오크 맥동을 줄이고 동특성 및 효율을 개선하기 위해 새로운 4-레벨 콘버터 이용한 DITC SRM 구동방식을 제안하였다. 4-레벨 콘버터는 콘덴서의 전압을 이용하여 여자 및 감자 시 높은 전압을 인가하여 여자특성을 개선할 수 있는 장점을 가진다. 본 논문에서는 DITC의 동특성 개선을 위해 사용된 4-레벨 콘버터의 동작특성과 부스트 전압에 따른 효율 개선에 대해 해석하였다. 이를 통해 제안된 SRM을 위한 4-레벨 콘버터의 DITC 제어기법을 시뮬레이션과 실험을 통해 검증하였다.

This paper presents a direct instantaneous torque control (DITC) of Switched Reluctance Motor (SRM) with a novel 4-level converter to develop a uniform torque and to improve a dynamic performance. The DITC method can reduce a high torque ripple of SRM. Drive efficiency and dynamic performance with conventional drive are low due to a slow excitation current build-up. Since the 4-level converter can obtain an addition boosted voltage to have a fast excitation and demagnetization, it can Improve dynamic performance and efficiency easily. To apply the DITC technique to a 4-level converter, a novel control scheme is presented according to the operating modes. Additionally, selection of capacitances of boosted capacitor and efficiency improvement of 4-level converter are analyzed. At last, the validity of proposed method is verified by some computer simulations md comparative experiments.

키워드

참고문헌

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  8. J.W Ahn et al; ' Five-Level Inverter for Optimal Excitaon of SRM Drive', Proceeding of IEEE/ISIE, vol 3, pp. 1401 - 1406, 2001. 06