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一种集成晶闸管全桥模块以抑制换相失败的演进式电网换相换流器

An Evolutional Line-Commutated Converter Integrated With Thyristor-Based Full-Bridge Module to Mitigate the Commutation Failure

语言:

中文摘要

本文提出了一种演进式电网换相换流器(ELCC),通过在换流阀中嵌入晶闸管全桥模块(TFBM)来增强系统抵御换相失败(CF)的能力。文章阐述了TFBM的工作原理及与串联阀之间的协调控制策略,并分析了TFBM的电压电流应力及选型方法。

English Abstract

With thyristor-based full-bridge module (TFBM) embedded in the converter valve, an evolutional line-commutated converter (ELCC) is proposed to enhance the commutation failure (CF) immunity. The operating principle of the TFBM and the coordinated control strategy between the TFBM and series-connected valve are presented. The voltage-current stress of the TFBM is analyzed, and the method to select t...
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SunView 深度解读

该技术主要针对高压直流输电(HVDC)领域的换相失败问题,与阳光电源现有的光伏逆变器和储能PCS产品线(主要基于VSC技术)存在技术路线差异。然而,随着阳光电源在大型地面光伏电站及电网侧储能系统的规模化应用,面对弱电网环境下的并网稳定性挑战,该文中关于“增强换相失败免疫力”的控制策略和模块化设计思路,可为阳光电源在构网型(GFM)技术及超大规模电网支撑技术的研究中提供参考,有助于提升产品在复杂电网故障下的穿越能力。