- 이득 감쇠 및 위상 지연 보상 LPF를 이용한 PMSM의 전류 제어 성능 개선
- ㆍ 저자명
- 김민주,최진철,이우택,Kim. Minju,Choi. Chinchul,Lee. Wootaik
- ㆍ 간행물명
- 한국자동차공학회논문집
- ㆍ 권/호정보
- 2014년|22권 2호|pp.107-114 (8 pages)
- ㆍ 발행정보
- 한국자동차공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
This paper applies a compensated low pass filter (LPF) to current measurements for permanent magnet synchronous motor (PMSM) drives. The noise limits the bandwidth of current controllers and has more adverse influences on control performances under the light load condition because of the low signal-to-noise ratio. In order to eliminate the noise sensitivity, this paper proposes a digital LPF with a compensator of gain attenuation and phase delay which are unacceptable in current information for PMSM drives. Characteristics of the proposed LPF are analyzed in comparison with the general LPFs. The compensated LPF is basically designed by the orthogonal property of the measured currents in the ${alpha}{eta}$ stationary reference frame. In addition, an implementation issue of the proposed method is discussed. Experimental results using the proposed method show improvements of the current control performance from two perspectives, rapid step responses and reductions of harmonic distortion.