基于分数阶算法的不平衡工况下三相逆变器控制策略

doi:10.16411/j.cnki.issn1006-7736.2025.03.012

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大连海事大学学报 ›› 2025, Vol. 51 ›› Issue (3) : 113-122. DOI: 10.16411/j.cnki.issn1006-7736.2025.03.012

基于分数阶算法的不平衡工况下三相逆变器控制策略

辛蔚，周鑫^*，马琦雯，牛小兵

作者信息 +

Control strategy of three-phase inverter under unbalanced operating conditions based on fractional-order algorithm

XIN Wei，ZHOU Xin^*，MA Qiwen，NIU Xiaobing

Author information +

文章历史 +

摘要

为提高系统在不平衡工况下的运行能力，本文从输出电压控制角度进行谐波抑制。首先，针对中点箝位(NPC)三电平逆变器，在不同坐标系下对被控对象进行分数阶建模，分析输出电压中基波和谐波分量在不同坐标下的表现形式，在两相静止坐标系下对其进行控制。其次，针对比例谐振和比例复数积分器存在谐振项带宽偏低的问题，采用改进分数阶比例复数积分控制(FO-QPCI)算法对输出电压的不平衡进行抑制。最后，以上海远宽科技有限公司生产的快速控制原型(MT RCP)为核心控制器的三电平逆变器实物平台对其进行实验验证。结果表明，本文算法对不平衡工况下输出电压具有较好的控制能力，对谐波具有良好的抑制效果。

Abstract

In order to improve the operating ability of the system under unbalanced conditions, harmonic suppression was carried out from the perspective of output voltage control. Firstly, for the neutral point clamped(NPC) three-level inverter, fractional order modeling was performed on the controlled object in different coordinate systems to analyze the manifestations of the fundamental and harmonic components in the output voltage at different coordinates, and control was carried out in a two-phase stationary coordinate system. Secondly, to address the issue of low resonance bandwidth in proportional resonance and proportional complex integrators, an improved fractional-order proportional complex integral control (FO-QPCI) algorithm was adopted to suppress the imbalance of output voltage. Finally, the three-level inverter with the rapid control prototype(MT RCP) produced by ModelingTech software as the core controller was experimentally verified on the physical platform, and results show that the proposed algorithm has good control ability to output voltage under unbalanced conditions and good suppression effect to harmonics.

导出引用

辛蔚, 周鑫, 马琦雯, 牛小兵. 基于分数阶算法的不平衡工况下三相逆变器控制策略[J]. 大连海事大学学报. 2025, 51(3): 113-122 https://doi.org/10.16411/j.cnki.issn1006-7736.2025.03.012

XIN Wei, ZHOU Xin, MA Qiwen, NIU Xiaobing. Control strategy of three-phase inverter under unbalanced operating conditions based on fractional-order algorithm[J]. Journal of Dalian Maritime University. 2025, 51(3): 113-122 https://doi.org/10.16411/j.cnki.issn1006-7736.2025.03.012

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