基于前馈解耦的交直流混合微电网双向AC-DC变换器控制策略研究

Abstract
Figure/Table
References
Related Citation (2)

Download: PDF (1300 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract As an important component of the AC/DC hybrid microgrid, the bidirectional AC-DC converter can realize the bidirectional flow of energy, meet the demand for electric energy from load fluctuations in the hybrid microgrid, and balance the AC/DC bus voltage. However, the control system of the bidirectional AC-DC converter is time-varying; the nonlinearity and coupling are strong; the control is complicated; it is necessary to solve the coupling problem between the control variables. This article focuses on this problem. First, the structure of the hybrid microgrid system is introduced and the mathematical model of the bidirectional AC-DC converter is establlished. Then, for the bidirectional AC-DC converter, the AC side voltage feedforward decoupling scheme is adopted. The controller is designed and the stability of the proportional integral (PI) control strategy is analyzed. Finally, a system simulation model is established based on Matlab/Simulink to verify the feasibility of the proposed control strategy. The simulation results show that the bidirectional AC-DC converter under the feedforward decoupling control strategy has fast dynamic response and good anti-load disturbance performance.

Key words： AC/DC hybrid microgrid bidirectional AC-DC converter double loop proportional integral (PI) control modeling and simulation

Received: 11 November 2021

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	YAO Weibo
	XU Ye
	HUANG Kefeng
	ZHOU Meiquan
	CUI Haoran

Cite this article:

YAO Weibo,XU Ye,HUANG Kefeng等. Research on bidirectional AC-DC converter feedforward decoupling control strategy of hybrid AC/DC microgrid[J]. Electrical Engineering, 2022, 23(5): 25-33.

URL:

http://dqjs.cesmedia.cn/EN/Y2022/V23/I5/25

[1] 郭雅娟, 陈锦铭, 何红玉, 等. 交直流混合微电网接入分布式新能源的关键技术研究综述[J]. 电力建设, 2017, 38(3): 9-18.
[2] 李振杰, 袁越. 智能微网——未来智能配电网新的组织形式[J]. 电力系统自动化, 2009, 33(17): 42-48.
[3] 李玉齐, 张健. 关于微网的新型配电系统研究概述与思考[J]. 电气技术, 2020, 21(5): 1-5, 14.
[4] 王成山, 武震, 李鹏. 微电网关键技术研究[J]. 电工技术学报, 2014, 29(2): 59-68.
[5] APRILIA E, MENG K, HOSANI M A, et al.Unified power flow algorithm for standalone AC/DC hybrid microgrids[J]. IEEE Transactions on Smart Grid, 2019, 10(1): 639-649.
[6] 王琪, 王斌, 徐万万, 等. 混合微电网互联变换器功率分配优化控制研究[J]. 控制工程, 2021, 28(2): 388-394.
[7] 朱艳萍, 杨爽晗, 郭伞伞, 等. 基于Lyapunov控制的双向DC/AC变换器研究[J]. 电力电子技术, 2021, 55(4): 124-127.
[8] TANG M, BIFARETTI S, PIPOLO S, et al.A novel repetitive controller assisted phase-locked loop with self-learning disturbance rejection capability for three-phase grids[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020, 8(2): 1870-1879.
[9] RAMOS G A, RUGET R I, COSTA-CASTELLO R.Robust repetitive control of power inverters for standalone operation in DG systems[J]. IEEE Transa- ctions on Energy Conversion, 2020, 35(1): 237-247.
[10] QU Fuming, LIU Jinhai, ZHU Hongfei, et al.Wind turbine condition monitoring based on assembled multidimensional membership functions using fuzzy inference system[J]. IEEE Transactions on Industrial Informatics, 2020, 16(6): 4028-4037.
[11] 董栋, 刘天保, 刘立群, 等. 微电网中AC/DC双向功率变换器的研究[J]. 太原科技大学学报, 2020, 41(3): 170-175.
[12] 梅杨, 黄伟超, 刘子毓. 矩阵式隔离型双向AC-DC变换器控制策略[J]. 电工技术学报, 2019, 34(12): 2499-2506.
[13] 文锋, 姜久春, 郭慧萍. 基于矩阵变换器的AC/DC变换器[J]. 电工技术学报, 2009, 24(3): 128-131.
[14] 刘欣博, 孙晓溪, 宋晓通. 带恒功率负载的交直流混合微电网系统大信号稳定性分析[J]. 电工技术学报, 2021, 36(增刊1): 115-125.
[15] 谈竹奎, 徐玉韬, 班国邦, 等. 基于主从控制的交直流混合微电网多模式运行与切换策略[J]. 电气技术, 2018, 19(9): 60-64.
[16] 李梅, 李岚. 基于单神经元自适应PI的PWM整流器控制[J]. 电气技术, 2011, 12(6): 4-8.
[17] LU Chaoying, YANG Shuying, WEI Xinfeng, et al.Research on the technology of the neutral-point voltage balance and dual-loop control scheme for three-level PWM inverter[C]//Proceedings of the 2012 Asia-Pacific Power and Energy Engineering Confer- ence (APPEEC), Shanghai, China, 2012: 1-4.
[18] 杨平, 邓亮, 徐春梅, 等. PID控制器参数整定方法及应用[M]. 北京: 中国电力出版社, 2016: 9-19.