A Switched Capacitive Filter-Based Harmonic Elimination Technique by Generating a 30-Sided Voltage Space Vector Structure for IM Drive

This paper proposes a novel polygonal voltage space vector structure (SVS) having 30 sides, for a star-connected induction motor drive. The SVS eliminates the presence of harmonics up to 25th order from motor phase voltage throughout the entire modulation range, providing a torque profile devoid of...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2020-03, Vol.35 (3), p.2402-2410
Main Authors: R, Rakesh, Ramachandran, Krishna Raj, Yadav, Apurv Kumar, Gopakumar, K., Umanand, Loganathan, Matsuse, Kouki
Format: Article
Language:English
Subjects:
30-sided space vector structure
Capacitors
Fourier analysis
Harmonic analysis
Harmonic elimination
induction motor drive
Induction motors
Inverters
Low voltage
Mathematical analysis
Modulation
polygonal space vector structure
Power harmonic filters
switched capacitive filter
Switches
Topology
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Summary:This paper proposes a novel polygonal voltage space vector structure (SVS) having 30 sides, for a star-connected induction motor drive. The SVS eliminates the presence of harmonics up to 25th order from motor phase voltage throughout the entire modulation range, providing a torque profile devoid of lower order pulsations. Linear modulation is extended till 99.63% of base speed without exceeding the motor phase voltage rating. Topology consists of a dc-link fed primary inverter and two equal low voltage modular capacitor fed secondary inverters. Here the harmonics generated by the primary inverter is canceled by the secondary inverter which acts as a switched capacitive filter. Detailed description of the SVS generation and timing calculations are provided in this paper. Effectiveness of the proposed scheme is validated using experimental results, inverter loss calculations, and harmonic analysis.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2019.2930280