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基于二阶广义积分器的频率锁定环建模、整定与性能比较

Modeling, Tuning, and Performance Comparison of Second-Order-Generalized-Integrator-Based FLLs

语言:

中文摘要

本文探讨了电力电子应用中常用的二阶广义积分器频率锁定环(SOGI-FLL)。针对其在电网电压扰动下抗干扰能力不足的问题,文章分析并比较了两种改进型SOGI-FLL方案,旨在提升系统在复杂电网环境下的同步精度与稳定性。

English Abstract

The second-order-generalized-integrator-based freq-uency-locked loop (SOGI-FLL) is a well-known tool for filtering and synchronization purposes in the power and energy applications. The SOGI-FLL, nevertheless, has a limited ability in rejecting the grid voltage disturbances. To deal with this problem, two advanced SOGI-FLLs have been proposed recently. In the first one, a SOGI-based filter is incl...
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SunView 深度解读

电网同步技术是阳光电源组串式逆变器、集中式逆变器及PowerTitan储能变流器(PCS)的核心控制算法。随着全球电网弱电网特征日益显著,传统的SOGI-FLL在面对电压畸变和频率波动时性能受限。本文提出的改进型算法能显著提升逆变器在弱电网下的并网稳定性与抗扰动能力。建议研发团队将该优化算法集成至iSolarCloud智能运维平台下的控制策略库中,特别是在构网型(GFM)储能变流器的频率支撑与电压同步环节进行应用验证,以增强产品在复杂电网环境下的适应性。