Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1991.11a
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- Pages.171-174
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- 1991
Operation of Brushless DC Motor using the Adaptive hysteresis bandwidth control algorithm
적응 Hysteresis band폭 제어 알고리즘을 이용한 Brushless DC Motor의 운전
- Cho, Kye-Seok (Dept. of Electrical Eng. HanYang Univ.) ;
- Kim, Kwang-Yeon (Dept. of Electrical Eng. HanYang Univ.) ;
- Hyun, Dong-Seok (Dept. of Electrical Eng. HanYang Univ.)
- Published : 1991.11.22
Abstract
Among the various PWM methods, the hysteresis-band current control PWM method is popularly used because of its simplicity of implementation, fast response characteristics and inherent peak current limiting capability. However, the current control PWM method with a fixed hysteresis-band has the disadvantage that switching frequency decreases and current ripple is high as the increasing of back-EMF. As a result, load current contains excess harmonics. This paper describes a adaptive hysteresis-bandwidth control algorithm so as to maintain the average switching frequency constant and decrease the current ripple where the hysteresis bandwidth is derived as a relation with the switching frequency. This control algorithm is applied to the surface-type brushless DC motor with separated winding and using the computer simulation, the validity of its algorithm is proved.
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