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A New Two-Phase Random Pulse Position PWM Scheme  

魏 昔 吾 (대불대 전기공학과)
鄭 榮 國 (대불대 전기공학과)
羅 碩 煥 (대불대 전기공학과)
任 永 徹 (대불대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.2, 2002 , pp. 194-204 More about this Journal
Abstract
In this paper, a new two-phase space vector RPWM(Random PWM) is proposed. In the proposed RPWM, each of two-phase PWM pulses is located randomly in each switching interval. Based on the space vector modulation technique, the duty ratio of the pulses is calculated. Along with the randomization of the PWM pulses, we can obtain the effects of spread spectra of inverter output voltage, d.c link current and audible switching acoustic noise as in the case of randomly changed switching frequency. To verily the validity of the proposed two-phase RPWM scheme, the experiment based on the Cl67 micro-controller was executed. The performance of the proposed scheme was compared with traditional PWM schemes experimentally.
Keywords
A New Two-Phase Random Pulse Position PWM; Power Spectra of Audible Switching Acoustic Noise;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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