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一种减轻并联并网逆变器电网畸变影响的全前馈技术

A Full-Feedforward Technique to Mitigate the Grid Distortion Effect on Parallel Grid-Tied Inverters

语言:

中文摘要

本文提出了一种新型全前馈(FF)技术,旨在减轻电网电压畸变对多台并联并网逆变器输出电流的影响。该技术仅需在其中一台“目标逆变器”上应用前馈传递函数,从而显著降低了实现该控制策略的硬件成本与系统复杂度。

English Abstract

In this article, a novel full-feedforward (FF) technique is introduced to lessen the effect of grid voltage distortion on injected current from the multiparallel grid-tied inverters. In this technique, the feedforward transfer function is applied to only one of the system inverters known as the target inverter. Hence, the investment cost for designing and implementing the FF technique is remarkabl...
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SunView 深度解读

该技术对阳光电源的组串式逆变器和集中式逆变器产品线具有极高价值。在大型光伏电站中,多机并联运行是主流架构,电网电压畸变(如谐波干扰)常导致并网电流质量下降。通过在单台逆变器上应用该全前馈技术,阳光电源可以在不增加整体硬件成本的前提下,提升多机并联系统的抗干扰能力和电能质量。建议研发团队在iSolarCloud智能运维平台监测到特定电网环境时,通过固件升级激活该控制策略,以增强产品在弱电网或复杂电网环境下的适应性和稳定性。