On the state-dependent switched energy functions of DFIG-based wind power generation systems

Yang Liu; Zehui Lin; Kaishun Xiahou; Mengshi Li; Q. H. Wu

doi:10.17775/CSEEJPES.2019.02140

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On the state-dependent switched energy functions of DFIG-based wind power generation systems

Regular Papers | 更新时间：2025-12-18

- On the state-dependent switched energy functions of DFIG-based wind power generation systems
- On the state-dependent switched energy functions of DFIG-based wind power generation systems
- 中国电机工程学会电力与能源系统学报(英文) 2020年6卷第2期页码：318-328
- 作者机构：
  
  School of Electric Power Engineering, South China University of Technology,Guangzhou,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2019.02140
  中图分类号：
- 纸质出版：2020
- 稿件说明：
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Yang Liu, Zehui Lin, Kaishun Xiahou, 等. On the state-dependent switched energy functions of DFIG-based wind power generation systems[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(2):318-328.

Yang Liu, Zehui Lin, Kaishun Xiahou, et al. On the state-dependent switched energy functions of DFIG-based wind power generation systems[J]. CSEE Journal of Power and Energy Systems, 2020, 6(2): 318-328.
Yang Liu, Zehui Lin, Kaishun Xiahou, 等. On the state-dependent switched energy functions of DFIG-based wind power generation systems[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(2):318-328. DOI： 10.17775/CSEEJPES.2019.02140.

Yang Liu, Zehui Lin, Kaishun Xiahou, et al. On the state-dependent switched energy functions of DFIG-based wind power generation systems[J]. CSEE Journal of Power and Energy Systems, 2020, 6(2): 318-328. DOI： 10.17775/CSEEJPES.2019.02140.

摘要

Abstract

This paper proposes a novel state-dependent switched energy function (SdSEF) for general nonlinear autonomous systems

and constructs an SdSEF for doubly-fed induction generator (DFIG)-based wind power generation systems (WPGSs). Different from the conventional energy function

SdSEF is a piece-wise continuous function

and it satisfies the conditions of conventional energy functions on each of its continuous segments. SdSEF is designed to bridge the gap between the well-developed energy function theory and the description of system energy of complex nonlinear systems

such as power electronics converter systems. The stability criterion of nonlinear autonomous systems is investigated with SdSEF

and mathematical proof is presented. The SdSEF of a typical DFIG-based WPGS is simulated in the whole processes of a grid fault and fault recovery. Simulation results verify the negativeness of the derivative of each continuous segment of the SdSEF.

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