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http://dx.doi.org/10.5207/JIEIE.2008.22.12.071

Chaotic Double Tent Mapping PWM Scheme for Acoustic Noise Reduction of o Motor Drive)  

Kim, Jun-Hyeoung ((주)한국3M 기술연구소)
Jung, Young-Gook (대불대학교 융합기술학부)
Lim, Young-Cheol (전남대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.22, no.12, 2008 , pp. 71-78 More about this Journal
Abstract
The paper proposes a chaotic double tent mapping PWM scheme for mitigation the acoustic noise of a motor chive. The chaos area ${\lambda}=0.99$ in bifurcation tree of the double tent mapping is used for generating the chaotic numbers. A 80C196 micro-controller is employed for generation of chaotic numbers, and the triangular carrier with chaotic frequency is obtained by using a 80C196 micro-controller and a MAX038 frequency modulator. The experiments are executed with a 1.5[kw] induction motor chive under the 2.5[A] load condition. As results, the experimental results show that the carrier, voltage and 3-D switching noise spectra of the proposed scheme is spread over the chaotic frequency range with no specific frequency concentration. Thereby, the shrill acoustic noise radiated from a motor chive is reduced by the proposed scheme.
Keywords
Chaotic phenomenon; Double tent mapping PWM scheme; Bifurcation tree; Harmonics spectra; Acoustic noise reduction;
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