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Improvement Possibilities of PWM voltage Inverter EMI Effects Using Different Modulation Methods
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| Author(s) |
D. Gonzalez; J. L. Iaquet; A. Arias; D. Bedford; J. L. Romeral; J. Balcells |
| Abstract |
A problem presented by the drives is the circulation of Common Mode (CM) currents through stray capacitances of the load. This currents may damage the ball bearings and degrade the isolation of the motor. Unwanted firing of earth leakage relays can be originated by these currents. In order to improve the EMI effects on the load side over a specific range of frequencies some modulation techniques for three-phase voltage source inverters have been reported. In this paper, the experimental results about EMI effects of one of this modulation techniques are described and compared with a classical vector modulation. the main EMI effect on the load side is the circulation of CM currents. Conclusions about the improvement possibilities of the load side CM EMI effects are obtained from the results. |
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| Filename: | EPE1999 - PP00277 - Gonzalez.pdf |
| Filesize: | 305.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-08 by System |
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