基于载波同步控制的逆变器开关环流抑制研究

杨兴武; 叶幸; 张宇华; 江友华; 陈国栋; 宋晋峰

doi:10.19912/j.0254-0096.tynxb.2024-1475

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (1) : 227-233. DOI: 10.19912/j.0254-0096.tynxb.2024-1475

基于载波同步控制的逆变器开关环流抑制研究

杨兴武¹, 叶幸¹, 张宇华¹, 江友华¹, 陈国栋², 宋晋峰²

作者信息 +

CARRIER SYNCHRONIZATION CONTROL-BASED INVERTER SWITCHING-FREOUENCY CIRCULATING CURRENT SUPPRESSION METHOD

Yang Xingwu¹, Ye Xing¹, Zhang Yuhua¹, Jiang Youhua¹, Chen Guodong², Song Jinfeng²

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文章历史 +

摘要

在多逆变器并联系统中,载波不同步会引发高频开关频率环流,而传统抑制方法难以实现载波基本同步。针对这一问题,提出一种载波同步控制的方法来实现对开关环流的抑制。该方法根据开关环流的大小来动态调整载波相位的补偿,当开关环流低于预设值时停止调整。首先通过对逆变器输出电压进行傅里叶分解,推导载波相位差与开关环流幅值之间的数学关联;然后详细说明逆变器载波同步控制的原理;最终通过仿真及实验验证该方法的有效性。

Abstract

In a multi-inverter parallel system, carrier desynchronization can trigger high-frequency switching frequency circulating loops, while traditional suppression methods are difficult to achieve basic carrier synchronization. To address this issue, this paper proposes a carrier synchronization control method to suppress switching circulating currents. This method dynamically adjusts the carrier phase compensation based on the magnitude of the switching circulating currents, stopping the adjustment when the circulating current falls below a preset value. The paper first derives the mathematical relationship between the carrier phase difference and the amplitude of the switching circulating currents through Fourier decomposition of the inverter output voltage. Then, the principle of inverter carrier synchronization control is explained in detail. Finally, the effectiveness of the proposed method for suppressing switching circulating currents is verified through simulation and experimentation.

导出引用

杨兴武, 叶幸, 张宇华, 江友华, 陈国栋, 宋晋峰. 基于载波同步控制的逆变器开关环流抑制研究[J]. 太阳能学报. 2026, 47(1): 227-233 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1475

Yang Xingwu, Ye Xing, Zhang Yuhua, Jiang Youhua, Chen Guodong, Song Jinfeng. CARRIER SYNCHRONIZATION CONTROL-BASED INVERTER SWITCHING-FREOUENCY CIRCULATING CURRENT SUPPRESSION METHOD[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 227-233 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1475

中图分类号： TM464

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