NDLI: Harmonic cancellation by mixing nonlinear single-phase and three-phase loads

Content Provider	IEEE Xplore Digital Library
Author	Hansen, S. Nielsen, P. Blaabjerg, F.
Copyright Year	1972
Abstract	The voltage on the distribution line is, in most cases, distorted even at no load of the transformer. This is due to the "background" distortion on the medium-voltage line caused by the large number of single-phase nonlinear loads, such as PCs, TVs, VCRs, etc. This paper proposes a method to mix single-phase and three-phase nonlinear loads and reduce the harmonic currents significantly. The dependence of the phase angle of the harmonic currents as a function of the short-circuit impedance is investigated using SABER for the three-phase and the single-phase diode rectifier both with and without DC-link inductance. The phase angle of the fifth harmonic current of a three-phase diode rectifier is always in counterphase with the fifth harmonic current of a single-phase diode rectifier. This leads to the conclusion that adding three-phase rectifier load can actually improve the power quality at the transformer. This is also validated by a number of on-site measurements in several applications of three-phase adjustable-speed drives.
Sponsorship	IEEE Industry Applications Society
Starting Page	152
Ending Page	159
Page Count	8
File Size	173079
File Format	PDF
ISSN	00939994
Volume Number	36
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rectifiers Harmonic distortion Light emitting diodes Variable speed drives Impedance Medium voltage Inductance Capacitors Electronic equipment Industry Applications Society
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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