NDLI: Discontinuous decoupled SVPWM schemes for a four-level open-end winding induction motor drive with waveform symmetries

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Volume 11 (2018) : Issue 1, Jan

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IET Radar, Sonar & Navigation

IET Renewable Power Generation

IET Science, Measurement & Technology

IET Signal Processing

IET Wireless Sensor Systems

Micro & Nano Letters

The Journal of Engineering

Discontinuous decoupled SVPWM schemes for a four-level open-end winding induction motor drive with waveform symmetries

Content Provider	IET Digital Library
Author	Lakhimsetty, Suresh Somasekhar, V. T.
Abstract	A four-level open-end winding induction motor drive (OEWIMD) is realised by feeding the open stator windings of a three-phase induction motor from either end with two-level voltage source inverters (VSIs). These VSIs are operated with unequal DC-link voltages, which are in the ratio of 2:1. This circuit configuration has the disadvantage of overcharging the DC-link capacitor of the inverter operated with the lower input voltage. Decoupled space vector pulse-width modulation (DSVPWM) schemes, which were suggested in the previous literature to circumvent this problem, result in higher switching power loss in the dual-inverter topology. It is known that the discontinuous pulse-width modulation (PWM) schemes reduce the switching power loss. However, lack of structural symmetry of the power circuit renders it unwieldy to devise these PWM schemes. This study explores the applicability of discontinuous decoupled SVPWM (DDPWM) techniques for the four-level OEWIMD, without compromising on the waveform symmetries. With the aid of an improvised loss model, it is shown that these PWM schemes achieve the reduction of the overall loss of the four-level OEWIMD compared to the DSVPWM schemes. It has also been observed that one of the proposed DDPWM schemes result in reduced dv⁄dt in the motor phase voltages.
Starting Page	280
Ending Page	292
Page Count	13
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 2, Feb (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0096
Journal	IET Power Electronics
Publisher Date	2017-09-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asynchronous Machine DC-link Capacitor Decoupled Space Vector Pulse-width Modulation Scheme Discontinuous Decoupled SVPWM Scheme Discontinuous Decoupled SVPWM Technique Discontinuous Pulse-width Modulation DSVPWM Scheme Four-level Open-end Winding Induction Motor Drive Induction Motors Motor Phase Voltage OEWIMD Open Stator Windings PWM Invertors Switching Power Loss Three-phase Induction Motor Two-level Voltage Source Inverter Unequal DC-link Voltage Voltage-source Converter VSI Waveform Symmetries
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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