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针对非标准LCL滤波器微电网变流器的带校正前馈补偿无差拍加权平均电流控制

Deadbeat Weighted Average Current Control With Corrective Feed-Forward Compensation for Microgrid Converters With Nonstandard LCL Filter

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中文摘要

本文针对微电网变流器在并网与离网双模式运行下的控制挑战,提出了一种带校正前馈补偿的无差拍加权平均电流控制策略。针对非标准LCL滤波器(大并联电容)带来的谐振与稳定性问题,该方法有效提升了系统在离网模式下的电压稳定性及并网模式下的电流跟踪精度,优化了变流器在复杂电网环境下的动态响应性能。

English Abstract

Microgrid converters are required to have the capability of both grid-tied mode and islanding mode operation. For this dual-mode operation, large shunt capacitors are often used in the interfacing converter output LCL filter, as it can help to stabilize supply voltage and to reduce switching ripple pollutions to sensitive loads during autonomous islanding operation. At the same time, this modifica...
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SunView 深度解读

该研究直接服务于阳光电源的构网型(Grid-forming)储能变流器(如PowerTitan系列)及微电网解决方案。在微电网应用中,大电容LCL滤波器常用于提升离网供电质量,但会引入复杂的谐振问题。该控制策略能显著提升变流器在弱电网及离网工况下的鲁棒性,有助于优化阳光电源储能PCS的控制算法,提升系统在黑启动、离网带载及并网切换过程中的动态性能。建议研发团队将其引入下一代构网型控制架构中,以增强产品在复杂微电网场景下的竞争力。