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面向并网NPC变换器的自适应二阶滑模控制及增强型扰动抑制

Adaptive Second-Order Sliding Mode Control for Grid-Connected NPC Converters With Enhanced Disturbance Rejection

语言:

中文摘要

本文针对三电平中点钳位(NPC)变换器,提出了一种包含自适应增益二阶滑模(SOSM)控制器和切换式高增益观测器(HGO)的两级控制方案。该方法应用于电压调节环和瞬时功率跟踪环,有效提升了系统对扰动的鲁棒性,改善了并网电流质量与动态响应性能。

English Abstract

In this article, a two-stage control scheme consisting of an adaptive-gain second-order sliding mode (SOSM) controller and a switched high-gain observer (HGO) is proposed for the three-level neutral-point-clamped (NPC) converter. The adaptive-gain SOSM control method is applied both in the voltage regulation loop and instantaneous power tracking loop, thus, the boundary of the disturbance derivati...
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SunView 深度解读

该技术对阳光电源的核心产品线具有显著的优化价值。三电平NPC拓扑广泛应用于阳光电源的大型集中式光伏逆变器及PowerTitan系列储能变流器(PCS)中。引入自适应二阶滑模控制(SOSM)和高增益观测器(HGO),能够显著提升在弱电网环境下的抗扰动能力,减少并网电流谐波,增强系统动态稳定性。建议研发团队在下一代高功率密度逆变器控制算法中引入该方案,以提升复杂工况下的并网性能,并进一步优化控制器的参数自整定能力,降低现场调试难度。