Parameter identification of three-phase inverters based on a digital twin system

被引：0
|
作者：
Hu C. [1 ,2 ]
Wang H. [1 ]
Zhu W. [1 ,2 ]
Cao W. [1 ,2 ]
Yin Z. [3 ]
机构：
[1] School of Electrical Engineering and Automation, Anhui University, Hefei
[2] Engineering Research Center of Power Quality, Ministry of Education, Anhui University, Hefei
[3] School of Electrical Engineering, Xi'an University of Technology, Xi'an
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2023年 / 51卷 / 11期
关键词：
adaptive particle swarm optimization algorithm; digital twin; parameter identification; three-phase inverter;
D O I：
10.19783/j.cnki.pspc.221517
中图分类号：
学科分类号：
摘要：
The parameter identification of a power electronic converter can improve the control and operational effect of systems. However, in traditional parameter identification methods, it is difficult to identify multiple groups of parameters at the same time, and the accuracy of the identification results is low. To solve this problem, a parameter identification method of three-phase inverters based on a digital twin is proposed. First, a digital twin three-phase inverter is constructed, including the establishment of the mathematical model of the main circuit of the three-phase inverter using a fourth-order Runge-Kutta method and the establishment of a discrete model of the controller. Then, the circuit parameters of the digital twin inverter are updated and optimized by an adaptive particle swarm optimization algorithm until the corresponding circuit parameters of the digital twin inverter and the physical inverter are the same. Finally, the effectiveness of the proposed parameter identification method is verified by simulation and experiment. The results show that the inductances, parasitic resistances and switch tube internal resistances of the physical inverter can be quickly identified under both steady and dynamic conditions, and the relative errors of identification results are within 2%. © 2023 Power System Protection and Control Press. All rights reserved.
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页码：177 / 187
页数：10
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