Negative-Sequence Current Compensation-Based Coordinated Control Strategy for Dual-Cage-Rotor Brushless Doubly Fed Induction Generator Under Unbalanced Grid Conditions

被引：6

作者：

Cheng, Ming ^{[1
]}

Yan, Xiaoming ^{[1
]}

Zhou, Jiawei ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing 210096, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2023年 / 70卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Rotors; Voltage control; Doubly fed induction generators; PI control; Reactive power; Wind turbines; Voltage; Brushless doubly fed induction generator (BDFIG); coordinated control; negative-sequence current compensation; unbalanced grid voltage;

D O I：

10.1109/TIE.2022.3186317

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this article, we propose a negative-sequence current compensation-based coordinated control strategy for dual-cage-rotor brushless doubly fed induction generator, where the machine-side converter (MSC) and the grid-side converter (GSC) cooperate to mitigate the imbalance in the control winding current, total output power, and total grid current. Based on the machine dynamic model withstanding unbalanced grid voltage, the negative-sequence current references, including four targets for MSC and three targets for GSC, are calculated and sent to the inner-current-loop controllers, where the GSC current controller is designed based on the supertwisting sliding-mode control with the stability analyzed. This proposed control strategy omits the outer-loop controller in the negative-sequence frame, which has a more simple control structure and becomes more easy-implemented. Finally, the whole proposed coordinated control system is designed and implemented in both simulation and experiments under unbalanced grid conditions, verifying the effectiveness of the proposed control strategy.

引用

页码：4762 / 4773

页数：12

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