高思芮,余洋
GAO Sirui,YU Yang

• 1:新能源电力系统全国重点实验室(华北电力大学(保定))
• 2:河北省分布式储能与微网重点实验室(华北电力大学(保定))

摘要(Abstract)：

鉴于传统VSG（虚拟同步发电机）控制在应对功率指令变化或突发故障时存在动态性能不佳、响应速度过慢、稳态误差较大等问题，提出了一种基于反推控制的构网型变流器改进VSG控制方法，并且给出了兼顾控制性能的反推控制参数选取方法。首先，引入反推控制，设计了构网型变流器的输出电势控制器与角频率控制器，并且从理论上证明了控制器的稳定性；然后，基于传递函数与控制要求，确定了反推控制参数的取值范围，从而改善运行效果；最后，通过仿真验证了所提控制方法的有效性。所提出的改进VSG控制方法能够使构网变流器更快、更准确地跟踪功率参考值，并且在应对功率突变和电网故障时表现出更优越的动态性能和支撑能力；所设计的反推控制参数选取方法进一步提升了控制方法的适应性和稳定性。
In response to problems such as poor dynamic performance, slow response speed, and significant steadystate errors in conventional virtual synchronous generator(VSG) control when handling power command changes or sudden faults, this paper proposes an improved VSG control method for grid-forming(GFM) converters based on backstepping control, along with a parameter selection approach that balances control performance. First, backstepping control is introduced to design the output potential controller and angular frequency controller for GFM converters, with theoretical proof of the controllers' stability. Then, based on transfer functions and control requirements, the value range for backstepping control parameters is determined to improve operational performance. Finally, simulations verify the effectiveness of the proposed control method. The improved VSG control method enables GFM converters to track power reference values faster and more accurately, demonstrating superior dynamic performance and support capability during power mutations and grid faults. The designed backstepping control parameter selection method further enhances the adaptability and stability of the control method.

关键词(KeyWords)： 虚拟同步发电机;反推控制;构网型变流器;参数选取
VSG;backstepping control;GFM converter;parameter selection

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52077078)

作者(Author): 高思芮,余洋
GAO Sirui,YU Yang

DOI: 10.19585/j.zjdl.202510009

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