NDLI: Voltages to ground in load-commutated inverters

Content Provider	IEEE Xplore Digital Library
Author	Quirt, R.C.
Copyright Year	1972
Abstract	Load-commutated inverter (LCI) drives are well suited to the starting and variable-speed operation of large fans, pumps, and compressors used in the petroleum industry. The origin and magnitude of the voltages to ground found in these types of drives are introduced and explained. The voltage to ground in most of the LCI circuit depends on bridge firing angles and can reach a maximum value as high as 2.4 p.u. (per unit) of rated. An analysis of this phenomenon and an algorithm for predicting the magnitude of the voltage as a function of machine voltage, and bridge firing angles is presented. Test results are included for validation of the analysis. How system grounding and DC link reactance can be used to reduce the magnitude of the elevated voltage to ground and transfer it to less devices is discussed.<>
Sponsorship	IEEE Industry Applications Society
Starting Page	526
Ending Page	530
Page Count	5
File Size	411869
File Format	PDF
ISSN	00939994
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage Inverters Bridge circuits Fans Compressors Petroleum industry Algorithm design and analysis Prediction algorithms Circuit testing Grounding
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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