Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1996.07a
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- Pages.616-618
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- 1996
A PWM Method for Reduction of Switching Loss in High Speed Motor
초고속 전동기에서의 스위칭 손실 절감을 위한 PWM 방식
- Kim, Yoon-Ho (Dept. of Electrical Eng. Chung-Ang Univ.) ;
- Lee, Byung-Soon (Dept. of Electrical Eng. Chung-Ang Univ.) ;
- Oh, Jong-Han (Dept. of Electrical Eng. Chung-Ang Univ.) ;
- Seoung, Se-Jin (Dept. of Electrical Eng. Chung-Nam Univ.)
- Published : 1996.07.22
Abstract
This paper presents an unipolar PWM which commutated switching device only in a half period. This method reduced switching loss significantly because of decreasing switching number in n period. In high speed motor drive needed high frequency above 300 Hz fundamental frequency, this method is suited very well. This paper described the principle of unipolar PWM method, analyzed harmonic spectrum and compared with bipolar PWM, Modified PWM and Overmodulation method in switching loss.
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