일정 스위칭 주파수를 가지는 DTC 기반 IPMSM의슬라이딩 모드 제어를 이용한 속응성 향상
Improvement of Dynamic Response for IPMSM based on DTC-CFTC Using Sliding Mode Control
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초록
본 논문에서는 일정 스위칭 주파수를 가지는 직접 토크 제어(Direct Torque Control, DTC) 기반의 매입형 영구자석 동기전동기(Interior Permanent Magnet Synchronous Motor, IPMSM)에서 속응성 향상을 위한 슬라이딩 모드 제어(SlidingMode Control, SMC) 기법을 제안한다. 일정 스위칭 주파수를 가지는 DTC 기법은 비례-적분(Proportional-Integral, PI) 토크 제어기와 삼각파 비교기로 구성되어 토크 오차 상태를 일정하게 제어한다. 이는 일반적인 히스테리시스 기반의 DTC 기법에 비해 속응성이 좋지 않다. 본 논문에서는 SMC 기법을 이용하여 일정 스위칭 주파수를 가지는 DTC 기법의 속응성을향상시키는 방법을 제안한다. 제안하는 기법의 타당성을 시뮬레이션을 통하여 검증한다.
Abstract
This paper proposes sliding mode control (SMC) method for improvement of dynamic response for IPMSM based onDTC with constant switching frequency. DTC with constant switching frequency method consists of PI torque controllerand triangular comparator for constant torque error status. It has the poor dynamic response compared to conventionalDTC. This paper proposes improvement method of dynamic response of DTC with constant switching frequency byusing SMC. Simulation results confirm the effectiveness of the proposed method.
참고문헌 (11)
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