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EMI filter design of DC-fed motor-drives using behavioral EMI models
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| Author(s) |
Hemant BISHNOI |
| Abstract |
Behavioral EMI models for the prediction of common-mode (CM) and differential mode (DM) noise based on Thevenin equivalents were developed earlier for a dc-fed motor-drive system. It was shown that beyond the switching frequency of the drive, the CM noise model behaved like a two-port linear network and could predict changes in the input-side EMI due to any changes in the load-side parameters or vice versa. This CM model was then complemented with linear one port DM behavioral models to predict the total noise at both the input and the output side of the motor-drive up to 30 MHz. The work presented here proposes a method to use these behavioral EMI models for simultaneous design and optimization of EMI filters on both the input and the output side of the motor-drive system, such that the total size of all filters is minimum. All filter designs are experimentally validated against the DO 160 standards for aerospace applications up to 30 MHz. The problems limiting the accuracy of the proposed method are clearly discussed. |
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| Filename: | 0152-epe2015-full-17345048.pdf |
| Filesize: | 1.229 MB |
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| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
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