대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2004년도 심포지엄 논문집 정보 및 제어부문
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- Pages.19-21
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- 2004
하이브리드 PWM 방식을 이용한 브러시리스 직류 전동기의 속도 제어 성능 향상
Performance Improvement of BLDC Motor Speed Control Using Hybrid PWM Method
- 발행 : 2004.05.22
초록
This paper considers pulse width modulation (PWM) methods which are used in 3-phase brushless DC motor controller. Due to many disadvantages of bipolar PWM method, unipolar PWM method is mostly used in industrial field. In constant speed control application, the unipolar PWM method shows a good performance of speed control. But in the wide range of speed control application, it shows a poor performance especially when deceleration is needed. So we propose hybrid PWM method that utilizes two PWM methods according to the sign of speed controller output. The simulation and experimental result shows that the proposed method improves a speed control performance of the brushless DC motor which is applied to industrial sewing machines.