4.8 Article

A New Space Vector Pulse Density Modulation Scheme for Two-Level Five Phase Induction Motor Drive

Journal

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 69, Issue 12, Pages 12077-12085

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2022.3144585

Keywords

Digital control scheme; multiphase voltage source inverters; sigma delta modulator; space vector pulse density modulation (SVPDM); variable speed drives (VSDs)

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In this article, a digital control scheme based on space vector pulse density modulation for a two-level five-phase induction motor drive is proposed. The scheme combines principles of digital signal processing techniques, such as sigma delta modulation and vector quantization, to form computationally efficient motor drives. The advantages of the scheme include reduced computational complexity, reduced acoustic noise, and electromagnetic interference in the drive.
Variable speed drives incorporating multiphase motors have started gaining attention in recent years due to their benefits over three-phase counter parts. In this article, we propose a digital control scheme based on space vector pulse density modulation for two-level five phase induction motor drive. The scheme combines principles of digital signal processing techniques, such as sigma delta modulation and vector quantization, along with space vector modulation to form computationally efficient motor drives. In this article, vector space is divided into ten nonoverlapping regions, with each region partitioned into three voronoi regions. The reference vector is vector quantized to the nearest switching vector. Absence of dwell time calculations, less memory requirements, and reduced computational complexity of the scheme along with reduced acoustic noise and electromagnetic interference in the drive are the core advantages of the scheme. The work has been experimentally implemented with 2 HP five-phase induction motor drive and the results are compared with space vector pulsewidth modulation scheme for validation purpose.

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