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一种用于稳定具有LC输入滤波器的DC/DC变换器并提升滤波器性能的虚拟RLC阻尼器

A Virtual RLC Damper to Stabilize DC/DC Converters Having an LC Input Filter while Improving the Filter Performance

语言:

中文摘要

DC/DC变换器输入端的LC滤波器在变换器作为恒功率负载(CPL)运行时可能导致系统不稳定。本文提出了一种虚拟RLC阻尼器,通过双端口网络分析法研究了其对LC滤波器的影响,证明了该方法在抑制振荡、提升滤波器性能及增强系统稳定性方面的有效性。

English Abstract

The $LC$ filter at the input of a dc/dc converter may cause instability when the converter is controlled as a constant power load (CPL) and one of the effective solutions is to reduce the output impedance of the $LC$ input filter with different stabilization dampers. In this letter, the impact of these dampers on the $LC$ filter is analyzed with two-port network analysis and it is found that the ...
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SunView 深度解读

该研究对于阳光电源的储能变流器(如PowerTitan、ST系列PCS)及组串式逆变器具有重要意义。在光储系统中,直流侧LC滤波器与后级恒功率控制的变换器耦合易引发振荡,特别是在弱电网或复杂阻抗环境下。通过引入虚拟RLC阻尼控制策略,无需增加额外的硬件损耗,即可有效提升直流侧稳定性,优化系统动态响应。建议研发团队在PCS的直流侧控制算法中集成此类虚拟阻尼技术,以增强产品在多种电网工况下的鲁棒性,降低硬件设计对无源阻尼元件的依赖。