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High frequency is the major catalyst for size reduction in the advancement of power conversion technology. It is essential to understand the EMI characteristic of high frequency converter since the EMI filter typically occupies one third of total system volume. This paper presents an insight view of CM/DM noise transformation in Flyback converter for low power adapter applications. The so-called mixed-mode...
The adoption of silicon carbide (SiC) MOSFETs in variable speed motor drives makes it possible to increase the inverter switching frequency up to several hundred kilohertz without incurring excessive inverter loss. As a result, the harmonic currents and related losses in the machine can be significantly reduced, and the dynamic performance of motor will also be improved. However, the increased switching...
In power electronics system, high frequency range CM noise suppression is a great challenge on the issue of conducted EMI. People may think that a perfect EMI filter with little self parasitics and mutual parasitics would suppress HF noise well. However, it will be shown that the practice story is different. In this paper, besides the parasitics in EMI filter, some other factors which increase the...
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