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单相MMC-RPC集成车网耦合系统低频振荡阻抗建模与机理分析

Impedance Modeling and Mechanism Analysis of Low-Frequency Oscillations in Single-Phase MMC-RPC Integrated Vehicle-Grid Coupling System

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中文摘要

本文针对单相模块化多电平换流器(MMC-RPC)在牵引供电系统中的应用,研究了动车组接入后车网耦合系统的低频振荡(LFO)机理。通过建立阻抗模型,分析了系统在复杂工况下的稳定性,为解决电力电子化电力系统中的振荡问题提供了理论支撑。

English Abstract

The single-phase modular multilevel converter-based railway static power conditioner (MMC-RPC) has significant advantages in governing the power quality problems in the traction power supply system. The mechanism analysis of low-frequency oscillations (LFOs) in the MMC-RPC integrated vehicle-grid coupling system when electric multiple units are put into operation is a critical issue, which has bee...
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SunView 深度解读

该研究涉及的MMC拓扑及阻抗建模方法对阳光电源的电力电子技术储备具有参考价值。虽然当前阳光电源核心业务集中在光伏和储能,但随着电网环境日益复杂,弱电网下的并网稳定性(如振荡抑制)是组串式逆变器和大型储能PCS(如PowerTitan系列)研发的关键。该文提出的阻抗建模与振荡分析手段,可辅助优化阳光电源并网控制算法,提升产品在复杂电网环境下的适应性与电能质量治理能力,尤其在构网型(GFM)技术演进中具有借鉴意义。