Improved Instantaneous Reactive Power Compensator Applied Sensorless Control of IPMSM with Adaptive Back EMF and Current Model Observer

개선된 순시 무효전력 보상기와 함께 적용된 적응 역기전력과 전류 모델 관측기 적용한 돌극형 영구자석 동기 전동기의 센서리스 제어

This paper presents the sensorless control method that employs the adaptive back-EMF(Electromotive Force) and current model observer of interior permanent magnet synchronous motor(IPMSM). The estimated back EMF considering a saliency is obtained by using the adaptive control method. The estimated EMF is inputted to the current model observer which is connected in series with adaptive back EMF estimator and is used to estimate the position and speed of the rotor. In order to improve the shortcomings of conventional method using the current error components multiplied in the compensation constant, the modified instantaneous reactive power compensator is applied. The validity of the control system presented is verified by the simulation.