基于VSG控制的跟/构网变流器宽频动态特性量化对比

韩璐; 李少林; 秦世耀; 袁敞; 李鹏坤

doi:10.19912/j.0254-0096.tynxb.2024-1761

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (11) : 542-552. DOI: 10.19912/j.0254-0096.tynxb.2024-1761

基于VSG控制的跟/构网变流器宽频动态特性量化对比

韩璐^1,2, 李少林¹, 秦世耀¹, 袁敞², 李鹏坤¹

作者信息 +

QUANTITATIVE COMPARATIVE ANALYSIS OF WIDEBAND DYNAMIC CHARACTERISTICS OF VSG-CONTROLLED GRID-FOLLOWING/GRID-FORMING CONVERTERS

Han Lu^1,2, Li Shaolin¹, Qin Shiyao¹, Yuan Chang², Li Pengkun¹

Author information +

文章历史 +

摘要

针对跟/构网型变流器宽频动态特性量化对比研究不足的问题,首先建立基于虚拟同步控制的跟/构网型并网变流器宽频动态小信号模型,并分别从时/频域验证模型准确性;在此基础上,基于特征模态与参与因子分析,量化比对跟/构网型变流器宽频动态特性及稳定性,提取弱阻尼特征模态及关键控制参数;进一步,基于根轨迹法分析虚拟惯量、一次调频等主动支撑参数和电网强度对跟/构网型变流器动态特性的影响及变化规律;最后,在Matlab/Simulink中搭建跟/构网型变流器的详细时域仿真模型,验证所得结论的准确性与有效性。

Abstract

Aiming at the problem of insufficient quantitative comparative study on the wideband dynamic characteristics of the grid-following/grid-forming converters, this study initially constructs a small-signal model to represent the wideband dynamics of grid-following/grid-forming converters under virtual synchronous control, followed by comprehensive validation in both time and frequency domains. Building upon this foundation, the research employs eigenmode and participation factor analysis to quantitatively assess and compare the wideband dynamic characteristics and stability of the converters, identifying weakly damped eigenmodes and pinpointing critical control parameters. Moreover, utilizing the root locus method, the study quantitatively examines how active support parameters—such as virtual inertia and primary frequency modulation—along with grid strength, influence the dynamic characteristics of the converters and delineates their patterns of variation. Conclusively, the accuracy and validity of the findings are substantiated through the development of a detailed time-domain simulation model of the grid-following and grid-forming converters in Matlab/Simulink.

导出引用

韩璐, 李少林, 秦世耀, 袁敞, 李鹏坤. 基于VSG控制的跟/构网变流器宽频动态特性量化对比[J]. 太阳能学报. 2025, 46(11): 542-552 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1761

Han Lu, Li Shaolin, Qin Shiyao, Yuan Chang, Li Pengkun. QUANTITATIVE COMPARATIVE ANALYSIS OF WIDEBAND DYNAMIC CHARACTERISTICS OF VSG-CONTROLLED GRID-FOLLOWING/GRID-FORMING CONVERTERS[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 542-552 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1761

中图分类号： TM464

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