Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2010.11a
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- Pages.17-19
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- 2010
PWM Method to Reduce Input Current THD for Three-phase Rectifier
3상 정류기의 입력전류 THD저감을 위한 PWM 방법
- Shin, Hee-Kuen (Chungju National Univ) ;
- Yoon, Byung-Chul (Chungju National Univ) ;
- Kim, Hag-Wone (Chungju National Univ) ;
- Cho, Kwan-Yuhl (Chungju National Univ) ;
- Lim, Byung-Kuk (Chungju National Univ) ;
- Ko, Don-Yeol (DONGAH ELECOMM Corporation)
- Published : 2010.11.26
Abstract
In this paper, new PWM method is proposed to reduce input current THD of PWM Rectifier. In general, the carrier comparison PWM method is used for PWM rectifier in which triangle wave is used as a carrier wave. However, large d-axis current ripple by this method can be a source of large THD. In this paper, new carrier comparison PWM method is proposed in which sawtooth wave is used as a carrier wave. Depending on the phase of the voltage commands, the rising or falling sawtooth wave is selected to reduce the THD. The simulation results verified the performance of the proposed method.
Keywords