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Suppression of conducted common mode voltage and shaft voltage in PWM motor drive system(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2009年03
Page:
402-407
Research Field:
Publishing date:

Info

Title:
Suppression of conducted common mode voltage and shaft voltage in PWM motor drive system
Author(s):
XIAO Fang; SUN Li; SUN Ya-xiu
Keywords:
motor drive system PWM common mode voltage shaft voltage conducted electromagnetic interference
PACS:
TM921.5
DOI:
-
Abstract:
A passive filter topology is proposed for suppressing common mode voltage and shaft voltage of PWM driving motor system.Through analyzing the propagating route of conducted electromagnetic interference(EMI),the filter topology included two common mode filters and a differential mode filter was placed between the output of PWM inverter and the input of rectifier.Two common mode filters are used to suppress common mode voltage in output of inverter and input of rectifier respectively.The differential mode filter was for suppressing the differential mode voltage between lines and over voltage caused by long cable.Experiment results indicate that the common mode voltage and shaft voltage are suppressed and it is complied with electromagnetic compatibility(EMC) standard in the whole conducted interference frequency band,proving that the design of topology and parameters are reasonable.

References:

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Memo

Memo:
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Last Update: 2009-07-09