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이석(S. Lee),전윤석(Y.S. Jeon),김흥민(H.M. Kim),목형수(H.S. Mok),김덕근(D.G. Kim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Recently, the demand of motor for industrial, household machinery is increasing. As switching devices and control technology are progressing, so the use of BLDC Motor is increasing But 3- Phase BLDC Motor generally used has pulsating torque and speed variation in commutation, so the range of it's application is limited high speed application is Especially, to solve these problems, it is necessary to increase phase of Motor, so study of Poly-Phase BLDC Motor is progressing. In this paper, we designd 7-Phase BLDC Motor drive system and MSTC(Minimum Switching Time Controller)
Motor Drive 설계를 위한 Spice 용 Interface Tool 제작
이상용(S.Y Lee),고재석(J.S. Gho),목형수(H.S.Mok),최규하(G.H.Choe),최홍순(H.S.Choi),김덕근(D.G.Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
The parameter through the motor designing program is used to predict motor response and design the motor drive circuits. The application programs such as "Spice'' and "Saber" are often used for these However, making the electrical model of motor for these simulation tool is uncomfortable and impossible for general users. Therefore, in this paper, we develop the "Spice" library generation program with the motor designing program "Motor Expert". This program will assist the user to make the motor library comfortablely and correctly
이상용(S.Y. Lee),강병희(B.H. Kang),채영민(Y.M. Chae),목형수(H.S. Mok),초규하(G.H. Choe),김덕근(D.K. Kim),류재성(J.S. Ryu) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
A brushless DC motor has the high quality of torque output and silence, has been more widely used in industrial area. As the driver and controller of BLDC motor have been more complicated and precise, simulation method has been much used m motor design. And the output characteristics of BLDC motor is determined by the waveform of BACK-EMF in instinct. But because the conventional model of BLDC motor is obtained by approximation of real nonlinear waveform to ideal trapezoidal waveform, the error is occurred in slmulation result. Thus in this paper, for the correction of this error in simulation, the model of real nonlinear waveform considered is proposed, and the simulation result is obtained in case of three-phase, four-poles Y-connected, surface mounted permanent magnet BLDC motor.
7상 BLDC 전동기 구동시스템을 위한 새로운 전류제어기에 관한 연구
이석(S.Lee),권형남(H.N.Kwon),전윤석(Y.S.Jeon),목형수(H.S.Mok),김덕근(D.G.Kim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Recently the needs for Motors are rapidly increasing, and especially, the BLDC Motor has advantage, because it is easy to control, in terms of similar torque and speed with DC Motors and easy to manage. However, 3-Phase BLDC Motor, winch is generally used, has limited usage in high speed, due to pulsation torque occurring commutation and variable speed. To solve this problem, it is necessary to increase invariable, pole number, or the number of slots. However, in terms of low winding inductance, back EMF of 7-Phase BLDC Motor is low in the range of low speed. Therefore, when hysteresis current controller is use, switching frequency is highly increasing.<br/> In this paper, To hold increase of switching frequency at low speed, MSTC(Minimum Switching Time Controller), which keeps minimum on-off time by using DSP F240 and EPLD EPF10K, is analyzed and designed. After all, simulation and experimentation had been done to verify the rationale.