대한전기학회논문지:전기기기및에너지변환시스템부문B (The Transactions of the Korean Institute of Electrical Engineers B)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

유도전동기의 소음저감을 위한 DSP기반 PWM인버터의 랜덤 캐리어 주파수 변조기법의 구현

Implementation of Random Carrier-Frequency Modulation Scheme for a DSP based PWM Inverter for Acoustic Noise Reduction of Induction Motors

  • 정영국 (대불대학교 컴퓨터정보공학부) ;
  • 나석환 (한국천문연구원) ;
  • 임영철 (전남대학교 전기공학과) ;
  • 정성기 (삼성전자 DA총괄 냉기 Digital그룹)
  • 발행 : 2003.12.01
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초록

This paper describes an implementation of a DSP (Digital Signal Processor) controlled random carrier frequency modulation for the PWM inverter for acoustic noise reduction of induction motors. Real-time generation of the random variable and RPWM(Random PWM) along with the speed control was achieved by DSP TMS320C31. The experimental results show that the voltage and current harmonics are spread to a wide band area and the power spectrum of the acoustic switching noise was spread to create a more appealing, less annoying sound. Also, the speed response of the implemented method and the conventional method is nearly similar to each other from the viewpoint of the v/f constant control.

키워드

참고문헌

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