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개선된 슬라이딩 모드 관측기에 의한 영구자석 동기전동기의 센서리스 제어
유성래(Ryu Sung Lay),Kim Ji Hyun,Lee In Woo 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
Speed and torque controls of permanent magnet synchronous motors are usually attained by the application of position and speed sensors. However, speed and position sensors require the additional mounting space, reduce the reliability in harsh environments and increase the cost of a motor. Therefore, many studies have been performed for the elimination of speed and position sensors. This paper investigates an Improved sliding mode observer for the speed sensorless control of a permanent magnet synchronous motor. The proposed control strategy is the sliding mode observer with a variable boundary layer for a low-chattering and fast-reponse control. The proposed algorithm is verified through the simulation and experimentation.
이창준(Chang-Jun Lee),권기영(Ki-Yeoung Kweon),유성래(Sung-Lay Ryu),이승구(Seung-Kuh Lee) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
In this study, we performed the CFD analysis to predict the cooling performance of the motor for golf-car application. The motor for the golf-car is different from the general motors in the cooling method and the operating condition. So, it is important to predict the motor's temperature generated by the electric losses. We investigated the inner temperature rise using the unsteady state analysis and compared with the experiment for the reliability evaluation of the CFD results through the present study.