영구자석 쇄교 자속 변화를 고려한 매입형 영구자석동기전동기의 MTPA 제어 알고리즘 개발
MTPA control algorithm for an IPMSM drive reflecting the PM flux linkage variation
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초록
본 논문에서는 온도 변화로 인한 영구자석 쇄교 자속 변화를 고려한 PMSM 드라이브의 MTPA(Maximum Torque perAmpere) 제어 알고리즘을 제시한다. 영구자석 쇄교 자속은 고정자 쇄교 관측기를 통해 실시간으로 추정되고, 추정된 영구자석 쇄교 자속으로부터 토크 오차 보정 계수가 계산된다. 2차원 MTPA look-up table(LUT)은 토크 오차를 보상하기 위해 영구자석 쇄교자속 변화를 반영하는 MTPA 전류 궤적을 달성하기 위해 개발되었다. 제안된 PMSM의 MTPA 제어 알고리즘은 시뮬레이션을 통해검증된다.
Abstract
This paper presents a Maximum Torque per Ampere (MTPA) control algorithm for an interior permanent magnetsynchronous motor (IPMSM) drive considering the permanent magnet (PM) flux linkage variations due to PMtemperature variation. PM flux linkage are estimated in real time via a Gopinath style stator flux linkage observerand a torque error correction factor is calculated from the estimated PM flux linkage. A 2-dimensional (2D) MTPAlook-up table (LUT) is developed to achieve the MTPA trajectory reflecting PM flux linkage variation for compensatingtorque error occurred by parameter variation. The proposed IPMSM control algorithm is verified throughsimulations.
참고문헌 (6)
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