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高频侧信道噪声干扰对逆变器低频性能的影响及抑制

Impact and Mitigation of High-Frequency Side-Channel Noise Intrusion on the Low-Frequency Performance of an Inverter

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中文摘要

本文通过实验研究并论证了高频侧信道噪声干扰(SNI)对三相逆变器输出电压反馈信号及低频性能的影响。该噪声源于逆变器采样频率及其倍频附近,会导致输出电压畸变及控制性能下降。

English Abstract

This letter investigates and demonstrates, experimentally, the impact of a high-frequency side-channel noise intrusion (SNI) on an output-voltage feedback signal on the low-frequency performance of a three-phase inverter. The high-frequency SNI originates at frequencies that are in the vicinity of the sampling frequency (and its multiples) of the inverter. The resultant noise-injected output-volta...
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SunView 深度解读

该研究直接关联阳光电源组串式及集中式逆变器的核心控制算法。逆变器在复杂电网环境下,采样电路极易受到高频开关噪声干扰,导致反馈信号失真,进而影响电流环控制精度及并网电能质量。建议研发团队在硬件设计中优化采样电路的抗干扰布局,并在软件算法中引入针对采样频率倍频的数字滤波策略。此项技术优化将显著提升阳光电源产品在弱电网及高频干扰环境下的运行稳定性,增强产品在复杂工况下的可靠性表现。