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离网应用中电压源逆变器的离散域建模:利用史密斯预估器提升调节器性能

Discrete-Time Domain Modeling of Voltage Source Inverters in Standalone Applications: Enhancement of Regulators Performance by Means of Smith Predictor

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中文摘要

本文针对离网应用中电压源逆变器,通过解耦电容电压与电感电流提升动态性能。针对计算及PWM延迟限制带宽的问题,提出了考虑延迟和采样保持效应的LC滤波器离散域建模方法,并引入史密斯预估器以优化调节器性能,有效提升了系统的动态响应与稳定性。

English Abstract

The decoupling of the capacitor voltage and inductor current has been shown to improve significantly the dynamic performance of voltage source inverters in standalone applications. However, the computation and pulse width modulation delays still limit the achievable bandwidth. In this paper, a discrete-time domain modeling of an LC plant with consideration of delay and sample-and-hold effects on t...
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SunView 深度解读

该研究直接服务于阳光电源的离网及微电网业务。在PowerTitan和PowerStack等储能变流器(PCS)产品中,离网模式下的电压稳定性与动态响应是核心竞争力。通过引入史密斯预估器补偿计算延迟,可显著提升逆变器在负载突变时的电压支撑能力,增强系统在弱电网或孤岛运行下的鲁棒性。建议研发团队在下一代PCS控制算法中评估该补偿策略,以优化离网电压质量,进一步提升阳光电源在微电网及离网供电领域的市场领先优势。