NDLI: Bearing Currents and Shaft Voltage Reduction in Dual-Inverter-Fed Open-End Winding Induction Motor With Reduced CMV PWM Methods

Content Provider	IEEE Xplore Digital Library
Author	Kalaiselvi, J. Srinivas, S.
Copyright Year	1982
Abstract	Exploiting the rich switching redundancies of the dual inverter, new hybrid pulsewidth-modulation (PWM) switching methods are proposed in this paper using the degree of freedom of operating the individual inverters independently, in addition to exercising the degree of freedom of controlling the switching action of the individual legs independently. Two voltage entities, namely, common-mode voltage (CMV) and differential-mode voltage are identified in the dual inverter, and all hybrid PWMs are envisaged aimed at reducing and also eliminating the CMV in it. The effects of such attempts on motor shaft voltage and also the motor bearing currents are presented in detail. Furthermore, bearing current profiles of an open-end winding induction motor are also presented with both conventional and hybrid PWMs proposed in this paper. Electric discharge machining discharge currents are completely eliminated with the use of all hybrid PWM methods proposed in this paper. In addition, implications of completely eliminating the CMV are also presented in this paper. All hybrid PWMs proposed in this paper are first simulated using MATLAB and are experimentally verified on a dual two-level inverter feeding a 1.1-kW 415-V 3-φ open-end winding induction motor drive.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	144
Ending Page	152
Page Count	9
File Size	1723363
File Format	PDF
ISSN	02780046
Volume Number	62
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Pulse width modulation Induction motors Switches Windings Shafts Vectors three-level inversion Bearing current common-mode voltage (CMV) differential-mode voltage (DMV) dual inverter electric discharge machining (EDM) current hybrid pulsewidth modulations (PWMs) open-end winding induction motor PWM shaft voltage
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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Discontinuous Decoupled PWMs for Reduced Current Ripple in a Dual Two-Level Inverter Fed Open-End Winding Induction Motor Drive

Identification and Discussion of the Origin of a Shaft End-to-End Voltage in an Inverter-Driven Motor

Experimental Discussions on a Shaft End-to-End Voltage Appearing in an Inverter-Driven Motor

Theoretical and Experimental Analysis for Current in a Dual-Inverter-Fed Open-End Winding Induction Motor Drive With Reduced Switching PWM

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Effect of Zero-Vector Placement in a Dual-Inverter Fed Open-End Winding Induction Motor Drive With Alternate Sub-Hexagonal Center PWM Switching Scheme

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Bearing Currents and Shaft Voltage Reduction in Dual-Inverter-Fed Open-End Winding Induction Motor With Reduced CMV PWM Methods

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