矿用分布式SVG电流环的自抗扰控制

Active disturbance rejection control for current loop of mine-purpose distributed SVG

随着大型煤矿高压用电设备供电质量的恶化,矿用级联H桥静止无功发生器(SVG)成为煤矿井下无功补偿的主流装置。在此基础上,提出了应用于矿用分布式静止无功发生器电流环中的自抗扰控制算法,采用非线性函数作为跟踪微分器,设计线性扩张状态观测器,有效抑制了煤矿井下复杂环境下系统电流环的内扰和外扰。该设计为井下的分布式静止无功发生器电流环设计提供了新的思路。

With the deterioration of the power quality of the high voltage equipment in large-scale collieries has come the necessity that the cascaded H-bridge static var generator（ SVG） become the main alternative of the reactive power compensation down in mines. This paper proposes an ADRC algorithm for use in current-loop for mine-purpose distributed SVG,an algorithm working by using a nonlinear function for tracking differentiator; and employing a linear extension observer for effectively suppressing the inner and outer interference of the current-loop of the SVG system within harsh environment. The algorithm could provide a new approach for distributed SVG current-loop design and could have a certain research value.