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엄기명(KM.EOM),송병섭(B.S.SONG),김연충(Y.C.KIM),원충연(C.Y.WON),이상석(S.S.LEE) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Switched Reluctance motors(SRM) attract much attention in motor because they are reliable and inexpensive. With advance in power electronics and high-speed processors, the performance of SRM has been enhanced greatly. But they require rotor position information to operate. In many systems, rotor position sensors are undesirable and have disadvantages. To overcome the disadvantages include by position sensors, a number of sensorless methods for SRM'S have been proposed by researchers This paper describes a method for indirect sensing of rotor position in SRM's pulsewidth modulation voltage control. The method required no priorl knowledge of motor parameters excepts for the numbers of stator and rotor poles. The detection method uses the change of the derivative of the phase current to detect the position.