NDLI: Integrated Differential-Mode and Common-Mode Filter to Mitigate the Effects of Long Motor Leads on AC Drives

Content Provider	IEEE Xplore Digital Library
Author	Tallam, R.M. Skibinski, G.L. Shudarek, T.A. Lukaszewski, R.A.
Copyright Year	1972
Abstract	Pulsewidth-modulated (PWM) ac drives generate high differential-mode (DM) motor voltages due to the reflected wave phenomenon. The common-mode (CM) voltage produced by a PWM inverter also has fast transitions that result in high peak currents to ground. For low-power ac drives, this can present several issues, such as pump-up of the dc bus and failure of the power module due to high instantaneous currents that are often undetected because of the typical sampling algorithm used. In this paper, existing drive output filter solutions are reviewed, and a new filter design is presented, which has integrated DM and CM impedance with damping matched to typical cable surge impedance. This eliminates reflections of both DM and CM traveling waves and also reduces peak cable charging currents. Experimental results are provided to demonstrate that the new filter has improved performance to reduce motor DM and CM voltages and drive output CM current, thus mitigating the issues specifically seen with low-power ac drives. Complete design details for the filter and a particular implementation of the integrated DM and CM reactor are also presented.
Sponsorship	IEEE Industry Applications Society
Starting Page	2075
Ending Page	2083
Page Count	9
File Size	756668
File Format	PDF
ISSN	00939994
Volume Number	47
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance Delta modulation Filtering theory Damping Matched filters Power harmonic filters Reflection reflected wave AC drives common mode differential mode pulsewidth modulation (PWM)
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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Compatibility Issues Between the Filter and PWM Unit in Three-Phase AC Motor Drives Utilizing the Pure Sine Filter Configuration

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Integrated Differential-Mode and Common-Mode Filter to Mitigate the Effects of Long Motor Leads on AC Drives

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