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Characteristics of the Two-phase Induction Motor By the Inverter Fed Control
Yang Byoung-Yull,Kwon Byung-Il The Korean Institute of Electrical Engineers 2005 KIEE International Transactions on Electrical Mach Vol.b5 No.4
The single phase induction motor has been commonly applied to small-sized electrical appliances because of its low cost, but it has low efficiency and large torque ripple, and it is incapable of speed control. However, two-phase induction motors have small torque ripple, high efficiency and variable speed control, because they are inverter fed. In this paper, the dynamic characteristics of the two-phase induction motor, such as the torque ripple, current and speed, are analyzed by using the time-stepping finite element method, and compared with the cage-type single phase induction motor.
Yang, Byoung-Yull,Kwon, Byung-Il,Lee, Chul-Kyu,Woo, Kyung-Il,Kim, Byung-Taek The Korean Institute of Electrical Engineers 2002 KIEE International Transactions on Electrical Mach Vol.b2 No.3
The line start permanent magnet (LSPM) motor has been developed facilitate to the design of the synchronous motor. The rotor of this motor is composed of interior permanent magnets and aluminum bars instead of rotor windings. It is difficult to predict the performance characteristics accurately, because many characteristics are produced by the aluminum rotor bars and the permanent magnets. Therefore, in this paper the dynamic characteristics of the LSPM motor are described and compared via the time-stepped finite element method with those of the cage-type induction motor to find the characteristics of the permanent magnets and the rotor bars in the LSPM motor.
Taguchi method를 이용한 영구자석 모터의 자속 장벽 설계
양병렬(Byoung-yull Yang),박현각(Hyun-kag Park),황규윤(Kyu Yun Hwang),권병일(Byung-il Kwon) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
This paper proposes a novel flux barrier in q-axis of rotor in IPM type BLDC motor, The proposed flux barrier can reduce cogging torqeu and diminisg torque ripple by sinusoidal waveform distribution of flux generated in the permanent magnet. To determine the optimal shape of the novel flux barrier, we also propose a modified Taguchi method which considering multiple quality characteristics, such as cogging torque, average torque, and efficiency. The proposed design and method were analyzed by using the 20 finite element method (FEM). Results of the proposed model were compared with initial model.
다구찌 기법을 이용한 IPM type BLDC 전동기의 토크리플 저감을 위한 자속장벽설계
박현각(Hyun Kag Park),양병렬(Byoung Yull Yang),권병일(Byung Il Kwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
The structure of interior permanent magnet type brushless DC motor (IPM type BLDC motor) has high saliency ratios that produce additional reluctance torque. But this structure has a significant cogging torque that may cause acoustic noise and vibration. In this paper describes an optimization of flux barrier in order to reduce cogging torque and torque ripple in IPM type BLDC motor using the Taguchi methods. The optimal design consider- ed noises such as manufacturing tolerances of permanent magnet size. So, optimal design ensures that torque performance is insensitive to noise.