Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2000.07b
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- Pages.1108-1110
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- 2000
A BLDCM Drive with Trapezoidal Back EMF using 4 Switch Three-Phase Inverter
4 스위치를 이용한 구형파 역기전력을 갖는 BLDC구동에 관한 연구
- Lee, Joon-Hwan (Dept. of Electrical Engineering, HanYang University) ;
- Ahn, Sung-Chan (Dept. of Electrical Engineering, HanYang University) ;
- Hyun, Dong-Seok (Dept. of Electrical Engineering, HanYang University)
- Published : 2000.07.17
Abstract
The BLDCM(Brushless DC motor) has been the Trapezoidal Back Electromotive Force(EMF) due to a surface magnet rotor with nonlinear distribution and full-pitch windings. Theoretically, it should be fed with rectangular phase current in order to minimize torque ripple. But, because voltage source inverter drives BLDCM, perfectly rectangular phase currents are not available. Now in this paper, using fourier series coefficients, calculating the coefficients of harmonic current within available orders and each harmonic component are controlled on stationary frame. Only using four switches, low cost and small size drive can be made and proposed method will be more useful in industrial. Simulation and experimental results prove the validity of the proposed method.
Keywords