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并网应用中高阶无源阻尼滤波器的优化设计

Optimal Design of High-Order Passive-Damped Filters for Grid-Connected Applications

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中文摘要

电力电子系统中高阶滤波器谐振引起的谐波稳定性问题日益突出。无源阻尼虽能提供鲁棒的解决方案,但会因额外元件引入而降低系统效率。本文提出了一种优化设计无源阻尼电路的新方法,旨在平衡滤波性能与系统效率,提升并网系统的稳定性。

English Abstract

Harmonic stability problems caused by the resonance of high-order filters in power electronic systems are ever increasing. The use of passive damping does provide a robust solution to address these issues, but at the price of reduced efficiency due to the presence of additional passive components. Hence, a new method is proposed in this paper to optimally design the passive damping circuit for the...
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SunView 深度解读

该研究直接服务于阳光电源的核心业务。在组串式和集中式光伏逆变器以及PowerTitan/PowerStack储能变流器(PCS)的开发中,高阶滤波器(如LCL或LLCL)是抑制谐波的关键。随着电网环境日益复杂(弱电网场景增多),谐振抑制成为提升并网稳定性的核心挑战。本文提出的无源阻尼优化设计方法,有助于阳光电源在保证并网合规性的前提下,进一步优化磁性元件体积与系统转换效率,降低损耗,提升产品在极端电网条件下的鲁棒性,对下一代高功率密度逆变器设计具有重要参考价值。