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直流微电网中分布式双向DC-DC变换器的输出阻抗建模与高频阻抗整形方法

Output Impedance Modeling and High-Frequency Impedance Shaping Method for Distributed Bidirectional DC–DC Converters in DC Microgrids

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中文摘要

本文针对直流微电网中能源接口变换器的抗干扰能力评估问题,指出传统建模常忽略延迟单元的影响。文章通过考虑控制延迟,建立了储能系统双向DC-DC变换器的精确输出阻抗模型,并提出了一种高频阻抗整形方法,以提升直流微电网的系统稳定性和抗干扰性能。

English Abstract

Output impedance characteristics of interfaced converters of energy sources are the important indicators to assess the anti-interference ability of the dc microgrids. However, the output impedance is often approximately modeled by neglecting the impacts of delay units. In order to accurately study the anti-interference ability, the output impedance of an energy storage system is modeled with the c...
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SunView 深度解读

该研究直接关联阳光电源PowerTitan和PowerStack等储能系统中的双向DC-DC变换环节。在直流耦合储能架构中,变换器的输出阻抗特性直接决定了系统在复杂电网环境下的稳定性及抗干扰能力。通过引入延迟补偿的精确建模与阻抗整形技术,可有效优化PCS的控制环路设计,提升系统在弱电网或多机并联场景下的动态响应与稳定性。建议研发团队在PCS控制算法中集成该阻抗整形策略,以增强产品在微电网应用中的电能质量与系统鲁棒性。