SA‑PSO algorithm based multiple harmonic compensation to achieve power balance control in HCSY‑MG systems

Xinggui Wang; Yu LI; Jinjian LI; Yingjie Ding; Sheng Xue

SA‑PSO algorithm based multiple harmonic compensation to achieve power balance control in HCSY‑MG systems

Vol. 25, No. 7, pp. 1374-1389, Jul. 2025

10.1007/s43236-024-00977-0

Series microgrid

Power imbalance

SA-PSO algorithm

Multiple harmonic compensation

Overmodulation

Abstract

This paper proposes a multi-harmonic compensation control strategy based on the simulated annealing particle swarm optimization (SA-PSO) algorithm to address the overmodulation caused by power imbalance in wind and solar micro-sources within a half-bridge converter series Y-connection microgrid (HCSY-MG) grid-connected system. The strategy introduces appropriate higher-order harmonics such as the 3rd, 5th, 7th, and 9th harmonics, into the overmodulated units to adjust the modulation wave amplitude, ensuring that it remains within a value of 1. At the same time, corresponding inverse harmonics are injected into the non-overmodulated units to cancel out the effects of the forward harmonics. The SA-PSO algorithm is used to quickly optimize the compensation coefficients for each harmonic, expanding the modulation range and enhancing the system stability. Simulation and experimental results demonstrate that this method significantly improves the operational stability of the system under severe power imbalance conditions in micro-sources, effectively overcoming the limitations oftraditional methods and validating the correctness and effectiveness of the proposed strategy.

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Cite this article

[IEEE Style]

X. Wang, Y. LI, J. LI, Y. Ding, S. Xue, "SA‑PSO algorithm based multiple harmonic compensation to achieve power balance control in HCSY‑MG systems," Journal of Power Electronics, vol. 25, no. 7, pp. 1374-1389, 2025. DOI: 10.1007/s43236-024-00977-0.

[ACM Style]

Xinggui Wang, Yu LI, Jinjian LI, Yingjie Ding, and Sheng Xue. 2025. SA‑PSO algorithm based multiple harmonic compensation to achieve power balance control in HCSY‑MG systems. Journal of Power Electronics, 25, 7, (2025), 1374-1389. DOI: 10.1007/s43236-024-00977-0.