Research on control method of multilevel inverter based on chaotic modulation

Dong Lin; Dan Luo; Guoxian Huang; Yugang Chen; Tinghui Li

doi:10.1117/12.3034432

16 October 2024 Research on control method of multilevel inverter based on chaotic modulation

Dong Lin, Dan Luo, Guoxian Huang, Yugang Chen, Tinghui Li

Author Affiliations +

Proceedings Volume 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024); 1329107 (2024) https://doi.org/10.1117/12.3034432
Event: Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 2024, Changchun, China

Abstract

Carrier phase-shift (CPS) modulation is a common modulation method for cascade H-bridge (CHB) multilevel inverters, while the traditional CPS modulation method uses a fixed phase shift angle. The disadvantage is that the output harmonic content is high, and the volume and weight of the filter are large. In order to further reduce harmonics and filter volume, a chaotic control strategy combining switching carrier phase angle method and carrier phase shift sinusoidal pulse width modulation (CPS-SPWM) is proposed. In this scheme, the carrier wave is jitter irregularly and the total number of switching times is unchanged, and the frequency spectrum concentrated on the fundamental wave is dispersed to the high frequency part which is easy to filter out, so the harmonic content is reduced and the power output quality is improved. A 7-level parallel CHB simulation model and experimental prototype were built for verification. The total harmonic distortion degree (THD) was reduced by 47.5% compared with the traditional method, which verified the effectiveness of the scheme.

Citation Download Citation

Dong Lin, Dan Luo, Guoxian Huang, Yugang Chen, and Tinghui Li "Research on control method of multilevel inverter based on chaotic modulation", Proc. SPIE 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 1329107 (16 October 2024); https://doi.org/10.1117/12.3034432

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