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基于LC滤波的并网变换器控制器设计以保证奈奎斯特频率下的无源性

Controller Design of LC-Based Grid-Tied Converter to Guarantee Passivity Up to the Nyquist Frequency

语言:

中文摘要

无源性设计在电力电子变换器并网中具有重要意义,可确保系统在与其它变换器交互时的全局稳定性。本文针对基于LC滤波的并网变换器,提出了一种控制器设计方法,旨在确保变换器在奈奎斯特频率范围内的无源特性,从而有效解决复杂电网环境下的系统交互稳定性问题。

English Abstract

The main benefit of designing for passivity raises when passive systems are interconnected, because the resulting system is also passive and consequently globally stable. Therefore, passivity-based control design is suitable for grid-connected power electronic converters to ensure the stability also considering interactions with other power converters. However, ensuring the passive behavior of a c...
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SunView 深度解读

该研究直接关系到阳光电源组串式及集中式光伏逆变器、PowerTitan/PowerStack储能变流器(PCS)在复杂电网环境下的稳定性。随着高比例电力电子设备接入,弱电网下的谐振交互成为行业痛点。该无源性控制设计方法可优化阳光电源逆变器及PCS的控制算法,提升设备在弱电网下的鲁棒性,减少并网谐振风险。建议研发团队将其应用于构网型(GFM)逆变器控制策略中,以增强设备在弱电网及多机并联场景下的电网适应性,提升iSolarCloud智能运维平台对电网交互稳定性的监测与预警能力。