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电力变换器频率耦合动态的小信号建模方法综述

Review of Small-Signal Modeling Methods Including Frequency-Coupling Dynamics of Power Converters

语言:

中文摘要

本文综述并对比了电力变换器的小信号建模技术,重点关注超越开关频率一半的动态特性。研究涵盖了小信号平均建模法、描述函数法等,旨在提升变换器在复杂工况下的建模精度与稳定性分析能力。

English Abstract

Over the past years, the linearized modeling techniques for power converters have been continuously developed to capture the small-signal dynamics beyond half the switching frequency. This paper reviews and compares the small-signal modeling approaches based on a buck converter with voltage-mode control. The study includes the small-signal averaged modeling approach, the describing function method...
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SunView 深度解读

该研究对于提升阳光电源核心产品(如组串式/集中式光伏逆变器、PowerTitan储能变流器)的控制稳定性至关重要。随着电网环境日益复杂,高频谐振及频率耦合问题成为影响并网性能的关键。通过引入文中提及的先进小信号建模与描述函数法,研发团队可更精准地优化逆变器控制环路,提升产品在弱电网下的并网稳定性,并为构网型(GFM)技术的迭代提供理论支撑,从而降低现场运维故障率,提升iSolarCloud平台的系统分析精度。