基于最优功率补偿和惯量阻尼自适应的虚拟同步机综合控制策略

凌果; 何山; 樊小朝; 徐立军

doi:10.19912/j.0254-0096.tynxb.2024-1930

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (3) : 134-145. DOI: 10.19912/j.0254-0096.tynxb.2024-1930

基于最优功率补偿和惯量阻尼自适应的虚拟同步机综合控制策略

凌果¹, 何山^1,2, 樊小朝³, 徐立军³

作者信息 +

INTEGRATED CONTROL STRATEGY OF VIRTUAL SYNCHRONOUS MACHINE BASED ON OPTIMAL POWER COMPENSATION AND INERTIA DAMPING ADAPTION

Ling Guo¹, He Shan^1,2, Fan Xiaochao³, Xu Lijun³

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文章历史 +

摘要

为改善可再生能源并网逆变器在多运行模式（并网模式和孤岛模式）下的动态响应能力,提出一种基于最优功率补偿和惯量阻尼自适应的虚拟同步机（VSG）综合控制策略。首先,建立传统VSG数学模型,分析其虚拟参数变化对系统稳定性的影响;其次,提出基于径向基函数（RBF）的VSG自适应方法,实现参数解耦,使得系统参数随频率的变化动态调整;然后,基于VSG有功-频率方程构建并离散化预测模型,设计以角频率偏差和VSG输出功率为性能指标的代价函数;通过二次规划计算出最优功率增量,实时调整VSG的有功参考值,从而改善暂态过程中的功频响应特性。最后,实验结果表明,所提控制策略有效抑制输出功率和频率的超调与振荡,减小频率的变化率和偏差,提升功频响应速度。

Abstract

To enhance the dynamic response capability of renewable energy grid-connected inverters under multiple operating modes （grid-connected mode and stand-alone mode）, a comprehensive virtual synchronous generator （VSG） control strategy based on optimal power compensation and adaptive inertia and damping is proposed. Firstly, the mathematical model of a conventional VSG is established, analyzing the impact of virtual parameter variations on system stability. Secondly, a radial basis function （RBF）-based adaptive method for the VSG is proposed, achieving parameter decoupling and enabling dynamic adjustment of system parameters in response to frequency variations. Subsequently, based on the VSG active power-frequency droop characteristics, a predictive model is constructed and discretized. A cost function using angular frequency deviation and VSG output power as performance indices is designed. The optimal power increment is computed via quadratic programming to adjust the VSG’s active power reference value in real-time, thereby improving the active power and frequency response characteristics during transients. Finally, simulation results demonstrate that the proposed control strategy effectively suppresses output power and frequency overshoot and oscillations, reduces the rate of change of frequency and frquency deviation, and enhances the response speed of active power and frequency.

导出引用

凌果, 何山, 樊小朝, 徐立军. 基于最优功率补偿和惯量阻尼自适应的虚拟同步机综合控制策略[J]. 太阳能学报. 2026, 47(3): 134-145 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1930

Ling Guo, He Shan, Fan Xiaochao, Xu Lijun. INTEGRATED CONTROL STRATEGY OF VIRTUAL SYNCHRONOUS MACHINE BASED ON OPTIMAL POWER COMPENSATION AND INERTIA DAMPING ADAPTION[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 134-145 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1930

中图分类号： TM712

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