Direct power control based on feedback linearization for DFIG-GSC under unbalanced voltage

DONG Fengbin; WANG Kai; WANG Hao; SHI Xintao

doi:10.14188/j.1671-8844.2023.0291

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Direct power control based on feedback linearization for DFIG-GSC under unbalanced voltage

更新时间：2026-10-16

- Direct power control based on feedback linearization for DFIG-GSC under unbalanced voltage
- Engineering Journal of Wuhan University Pages: 1-10(2026)
- 作者机构：
  
  陕西理工大学电气工程学院，陕西汉中 723000
- 作者简介：
- 基金信息：
- DOI：10.14188/j.1671-8844.2023.0291
  CLC： TM46
- Online First：16 October 2026，
- 稿件说明：
移动端阅览
DONG Fengbin, WANG Kai, WANG Hao, et al. Direct power control based on feedback linearization for DFIG-GSC under unbalanced voltage[J/OL]. Engineering Journal of Wuhan University, 2026, 1-10.
DOI：

DONG Fengbin, WANG Kai, WANG Hao, et al. Direct power control based on feedback linearization for DFIG-GSC under unbalanced voltage[J/OL]. Engineering Journal of Wuhan University, 2026, 1-10. DOI： 10.14188/j.1671-8844.2023.0291.

摘要

为了提升不平衡电网电压下双馈风力发电机（DFIG）网侧变换器（GSC）的性能，提出了一种反馈线性化与直接功率控制（DPC）相结合的复合控制策略。首先

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坐标系下建立了GSC以功率为变量的仿射非线性模型，然后根据微分几何理论，对其进行精确线性化条件验证后，与滑模控制相结合设计了其反馈线性化控制律，得到功率内环的解耦表达式；电压外环采用积分滑模控制来提升直流侧电压的响应速度。针对因负序分量引起的不确定项以及激励变化项等不确定因素的影响，用超螺旋观测器对其进行观测并对其控制量进行修正。对不同的控制目标分别讨论了功率补偿方案。最后搭建仿真模型和传统DPC以及直接功率控制进行比较，验证了所提控制策略的合理性和有效性。

Abstract

In order to improve the performance of DFIG grid-side converter (GSC) under unbalanced grid voltage

a compound control strategy combining feedback linearization and direct power control (DPC) was proposed. Firstly

the affine nonlinear model of GSC with power as variable is established in the coordinate system

and then the feedback linearization control law is designed according to the differential geometry theory

and the decoupling expression of the inner power loop is obtained. The voltage outer loop adopts integral sliding mode control to improve the response speed of DC side voltage. In view of the uncertainty caused by the negative sequence component and the influence of the excitation change

the superspiral observer is used to observe the uncertainty and modify the control quantity. The power compensation schemes for different control targets are discussed. Finally

the simulation model is built and compared with the traditional DPC and direct power control

and the rationality and effectiveness of the proposed control strategy are verified.

关键词

Keywords

references

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