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Switching Noise Reduction of Induction Motor by a Two-Phase RCD-PWM Technique with Dual Zero Vector Modes  

Oh Seung-Yeol (한국과학재단 지정 전남대 고품질 전기전자부품 및 시스템 연구센터(RRC))
Wi Seog-Oh (한국천문연구원)
Jung Young-Gook (대불대 컴퓨터정보공학부)
Lim Young-Cheol (전남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.9, no.6, 2004 , pp. 525-535 More about this Journal
Abstract
In this paper, a two-phase DZRCD(Dual Zero Vector Modes RCD) technique is proposed to develope the problem of a conventional two-phase RCD-PWM (Random Centered Distribution PWM) which gives the power spectra of narrow band range in the high modulation index (M). In the proposed DZRCD technique, the zero vector $V_0$ is selected as $V_0$(111) for M$\geqq$0.8. Also, $V_0$ is selected as $V_0$(000) for the modulation indices < 0.8. For the unplementation of the proposed method, a 16-bit micro-controller Cl67 was used and the experiments were conducted with the 1.5kw induction motor under no load condition. The experimental results show that the voltage / current spectra is spread to a wide band range, and the switching noise of motor is reduced by the proposed method compared to the conventional random operation.
Keywords
Two-Phase RCD-PWM(Random Pulse Centered Displacement PWM); Dual Zero Vector Modes; Switching Noise Reduction; Induction Motor Drives;
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