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Title: Common-mode noise reduction with impedance balancing in DC-fed motor drives

Conference · · Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition (APEC)
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  1. The University of Tennessee, Knoxville
  2. ORNL
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Unlike conventional passive or active filters, an impedance balancing circuit reduces the common-mode (CM) electromagnetic interference (EMI) noise by establishing an impedance balancing bridge. The EMI noise can be significantly reduced when the impedance bridge is designed to be well balanced. This paper investigates impedance balancing circuits in Dc-fed motor drive systems where both DC input and AC output need to meet EMI standards and thus EMI filters are needed for both sides. An impedance balancing circuit is proposed to reduce both DC and AC side CM noise. Two auxiliary branches are added to the conventional passive filters to establish an impedance bridge and reduce CM noise. The design criteria are presented, and the impact of the proposed impedance balancing circuit on both sides CM noise are investigated. It shows that the proposed impedance balancing circuit can reduce DC side and AC side CM noise based on different mechanisms. The CM noise reduction performance of the proposed method does not depend on the motor and cable models. Experiment results are presented to demonstrate the feasibility and effectiveness of the proposed method.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1468919
Journal Information:
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition (APEC), Vol. 2018; Conference: IEEE Applied Power Electronics Conference and Exposition , San Antonio, TX (United States), 4-8 Mar 2018; ISSN 1048-2334
Publisher:
IEEE
Country of Publication:
United States
Language:
English

References (10)

A Passive EMI Filter for Eliminating Both Bearing Current and Ground Leakage Current From an Inverter-Driven Motor journal September 2006
Design of output passive EMI filter in DC-fed motor drive conference February 2012
EMI Reduction in DC-Fed Electric Drives by Active Common-Mode Compensator journal October 2014
Investigation of Hybrid EMI Filters for Common-Mode EMI Suppression in a Motor Drive System journal April 2010
An Active Cancellation Circuit for Reducing Electrical Noise from Three-Phase AC Motor Drivers journal February 2014
Analysis of CM Volt-Second Influence on CM Inductor Saturation and Design for Input EMI Filters in Three-Phase DC-Fed Motor Drive Systems journal July 2010
Conducted Common-Mode EMI Reduction by Impedance Balancing journal March 2012
A Novel Filter Topology With Active Motor CM Impedance Regulator in PWM ASD System journal December 2014
Attenuation of Conducted EMI Emissions From an Inverter-Driven Motor journal January 2008
Design and Implementation of a Hybrid Output EMI Filter for High-Frequency Common-Mode Voltage Compensation in PWM Inverters journal January 2009

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