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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)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.52, no.12, 2003 , pp. 608-615 More about this Journal
Abstract
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.
Keywords
Random Carrier Frequency Modulation Scheme; RPWM; DSP; Acoustic Noise Reduction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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