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논문 기본 정보

자료유형
학술저널
저자정보
L. Premalatha (Anand Institute of Higher Technology) T. A. Raghavendiran (Anand Institute of Higher Technology) C. Ravichandran (Anand Institute of Higher Technology)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.13 No.4
발행연도
2013.7
수록면
619 - 625 (7page)

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초록· 키워드

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Switched mode power supplies (SMPS) are power electronic circuits extensively used in a wide range of applications. High frequency switching operation of SMPS causes electromagnetic emissions and has the potential to interfere with system operation, which in turn has an impact on system performance. This makes electromagnetic compatibility (EMC) an important concern. In this paper, a new and simple spread spectrum technique is proposed by modulating chaotic pulse position modulation (CPPM) and pulse width modulation (PWM). The resulting CPWM is implemented to reduce the conducted EMI in SMPS. The proposed method is found to be effective in reducing conduction EMI. The effectiveness and simplicity of the proposed method on spreading those dominating frequencies is compared to the EMI mitigation technique using an external chaotic generator. Finally, the levels of conductive EMI with standard PWM, CPWM with an external chaos generator and the proposed method are experimentally verified to comply with the CISPR 22A regulations. The results confirm the effectiveness of the proposed method.

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Abstract
I. INTRODUCTION
II. CHAOTIC PULSE POSITION MODULATION
III. FORWARD CONVERTER
IV. MEASURED RESULTS - EMI REDUCTION IN SMPS
V. EMI TEST ANALYSIS
VI. CONCLUSION
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