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A Comparative Study on the Performance of Two-Phase and Three-Phase Randomized Pulse Position PWM Scheme for Mitigation of Audible Switching Acoustic Noise in Motor Drives  

정영국 (대불대학교 전기공학과)
위석오 (전남대학교 대학원 전기공학과 박사과정 수료)
나석환 ((주)하우 무선데이터 통신연구소 책임연구원)
임영철 (전남대학교 전기공학과 교수/한국과학재단 지정 전남대 고품질 전기전자부품 및 시스템연구센터(RRC) 소장)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.3, 2002 , pp. 224-236 More about this Journal
Abstract
In this paper, a comparative study on the performance of two-phase and three-phase randomized pulse position PWM scheme for mitigation of audible switching acoustic noise in motor drives is done. In the randomized Pulse Position PW, each of two-Phase or three-phase PWM Pulses is located randomly in each switching interval. Simulation and experimental efforts were executed to investigate the spread effects of Power spectra of inverter output voltage, waveforms of ripple current and audible switching acoustic noise. As results, two-phase RP% scheme is more effective from the viewpoint of switching loss and ease of implementation while the three-phase RPWM scheme is more effective from the viewpoint of the spread effects of power spectra. Also, from the view point of the audible switching acoustic noise in motor drives, two-phase and three-phase RPW schemes are nearly the same.
Keywords
Two-Phase and Three-Phase Random Pulse Position PWM; Inverter Ped Motor Drives; Power Spectra of Audible Switching Acoustic Noise;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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