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Elimination of Harmonic Spikes using Second-Order Space Dithered Sigma-Delta Modulation
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| Author(s) |
Kyo-Beum LEE, Seo-Hyeong KIM |
| Abstract |
This paper proposes second-order SDSDM (Space Dithered Sigma-Delta Modulation) to suppress the harmonic spikes in power conversion. PWM (Pulse Width Modulation) normally operates with a fixed switching frequency, which causes power spectrum to be concentrated at multiples of the switching frequency. The proposed scheme is confirmed in the DC/DC converter. The experimental results show that the proposed method provides improved performance in reducing harmonic spikes caused by PWM while maintaining the low current ripples. |
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| Filename: | 0482-epe2009-full-03100304.pdf |
| Filesize: | 391.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2010-01-27 by System |
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