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Evaluation of DC-Link voltage ripple in five-phase PWM voltage source inverters

Vujacic, M, Hammami, M, Dordevic, O and Gabriele, G Evaluation of DC-Link voltage ripple in five-phase PWM voltage source inverters. In: The 9th International Conference on Power Electronics, Machines and Drives, PEMD, 17 April 2018 - 19 April 2018, Liverpool, England, UK. (Accepted)

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This paper presents the analysis of the dc-link voltage switch-ing ripple in five-phase PWM voltage source inverters with balanced load. The analysis is particularly important for the design and selection of a dc-link capacitor making it possible to meet desired electrical performance of the inverter system. Simple and practical equation for designing the dc-link capac-itor is proposed relating the value of capacitance to the max-imum value (peak-to-peak) of the dc-link voltage ripple. The amplitude of the dc-link voltage switching ripple is analyti-cally derived as a function of modulation index, and the am-plitude of the output current and phase angle. In order to show peak-to-peak voltage ripple distribution different dia-grams are introduced. Reference is made to continuous sym-metric centered PWM modulation (i.e., space vector modula-tion SVM). In order to verify proposed developments, simula-tions have been carried out by Matlab/Simulnik considering full range of modulation index and output phase angle.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: dc-link voltage ripple; five-phase inverter; voltage source inverter; dc-link capacitor design
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics & Electrical Engineering (merged with Engineering 10 Aug 20)
Publisher: The IET, The Institution of Engineering and Technology
Date Deposited: 21 Feb 2018 12:54
Last Modified: 13 Apr 2022 15:16
URI: https://researchonline.ljmu.ac.uk/id/eprint/8103
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