Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation

Bu, Feifei; Liu, Qi; Pu, Tianyu; Zhao, Yun; Ma, Beijia; Ma, Conggan; Degano, Michele; Gerada, Chris

Abstract

In order to better address the problem of many high-order harmonics' concentration in the output voltage, a novel five-phase piecewise-random-switching-frequency space vector pulse width modulation (PRSF-SVPWM) strategy is proposed for a five-phase voltage source inverter. Compared to the conventional random switching frequency SVPWM (RSF-SVPWM), the entire fundamental period of this method is divided into two half-fundamental periods, so the original switching frequency in a single fundamental period is randomized in segments respectively. During this process, parameters named the offset frequency and random frequency are defined and assigned reasonably. In this way, high-frequency harmonics in one period are spread into a wider range. Subsequent simulation and experimental results verify that the proposed random modulation strategy can further reduce amplitudes of harmonics near switching frequency and its integer multiples, even though within a narrow switching frequency range, and a satisfactory effect of high-order harmonic dispersion is finally obtained, which contributes to the application and popularization of random pulse width modulation strategies.

Citation

Bu, F., Liu, Q., Pu, T., Zhao, Y., Ma, B., Ma, C., Degano, M., & Gerada, C. (2021). Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation. IEEE Transactions on Energy Conversion, 36(3), 2339-2347. https://doi.org/10.1109/tec.2020.3046835

• Journal Article Type: Article
• Acceptance Date: Dec 19, 2020
• Online Publication Date: Dec 23, 2020
• Publication Date: Sep 1, 2021
• Deposit Date: Nov 28, 2024
• Journal: IEEE Transactions on Energy Conversion
• Print ISSN: 0885-8969
• Electronic ISSN: 1558-0059
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 36
• Issue: 3
• Pages: 2339-2347
• DOI: https://doi.org/10.1109/tec.2020.3046835
• Keywords: Electrical and Electronic Engineering; Energy Engineering and Power Technology
• Public URL: https://nottingham-repository.worktribe.com/output/7353386
• Publisher URL: https://ieeexplore.ieee.org/document/9305224