비대칭 6상 영구자석 동기 전동기의 정지 좌표계 DQ축 전류를 이용한 스위치 개방 고장 검출 기법
Algorithm for Switch Open Fault Detection of Asymmetric 6-phase PMSM Based on Stationary Reference Frame dq-axis Currents
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초록
본 논문에서는 정지 좌표계 dq-축 전류를 기반으로 히는느 비대칭 6상 PMSM의 스위치 개방 고장 검출 알고리즘을 제안한댜 본 논문에서의 해당 모터는 2개의 3상 권선이 30°의 전기적 위상차를 갖고 중성점이 분리된 비대칭 구조를 갖는다. 따라서 듀얼 3상 PWM 인버터와 스위치 개방 고장으로 인한 검출기법이 반드시 필요하다. 본 논문에서는 비대칭 6상 PMSM을 구동하기 위해 듀얼 dq축 전류 제어 방식을 사용하며 전역 통과 필터와 저역 통과 필터를 사용해 전류 변동을 감지하여 개방 고장이 발생한 스위치를 검출하는 방식을 제안한댜 제안한 방법의 효과와 유용성은 여러 실험을 통해 검증하였다
Abstract
This paper proposes the detection algorithm for switch open fault of asymmetric 6-phase PMSM based on stationary reference frame dq-axis currents. In this paper, target motor has an asymmetric structure in which two upper three windings have an electrical phase difference of 30° and a neutral point is separated. As a result, dual 3-phase PWM inverters and the detection techniques due to open failures of switch are definitely required. In this paper, the dual dq-axis current control method is used for driving the asymmetric 6-phase PMSM and the open fault switch should be detected by using variable all pass filter and low pass filter in order to detect the current amplitude. The effectiveness and usefulness of the proposed method is verified by several experiments.
참고문헌 (7)
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