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功率变换器分析与设计的阻抗增强与削弱网络

Impedance Strengthening and Weakening Networks for Power Converter Analysis and Design

语言:

中文摘要

本文提出了阻抗增强与削弱(ISW)网络概念,用于描述功率变换器的工作机制,并推导出一套广义的阻抗设计原则。阻抗增强指负载阻抗高于输入等效阻抗,从而实现电压增益;反之则为阻抗削弱。该方法为变换器建模与稳定性分析提供了新视角。

English Abstract

Proposed in this letter is the concept of impedance strengthening and weakening (ISW) networks, which can be used to describe the working mechanism of power converters and lead to a generalized impedance-based design principle. Impedance strengthening in a converter refers to the load impedance being higher than the input equivalent impedance, leading to voltage gain. Conversely, impedance weakeni...
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SunView 深度解读

该研究提出的ISW网络概念对阳光电源的核心业务具有重要指导意义。在光伏逆变器(如SG系列组串式逆变器)和储能变流器(如PowerTitan/PowerStack)的开发中,面对日益复杂的弱电网环境,基于阻抗的稳定性分析是防止并网振荡的关键。通过应用ISW设计原则,研发团队可以更直观地优化变换器输出阻抗特性,提升产品在弱电网下的并网稳定性。此外,该理论有助于简化多级变换器架构的控制参数整定,提升iSolarCloud智能运维平台对电网交互特性的监测与预警能力,助力构网型(GFM)技术的迭代升级。