Load model for medium voltage cascaded h-bridge multi-level inverter drive systems

被引：38
|
作者：
Liang X. [1 ]
He J. [2 ]
机构：
[1] Department of Electrical and Computer Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, A1B 3X9, NL
[2] School of Electrical Engineering and Automation, Tianjin University, Tianjin
来源：
IEEE Power and Energy Technology Systems Journal | 2016年 / 3卷 / 01期
关键词：
Cascaded H-bridge multi-level inverter; frequency dependence; load model; medium voltage drives (MVDs); power system dynamic studies; voltage dependence;
D O I：
10.1109/JPETS.2015.2508785
中图分类号：
学科分类号：
摘要：
Medium voltage drives (MVDs) are commonly used in high-power applications and show significant impact on the overall system dynamics due to their large size and high power demand. Although detailed switching models for MVDs can be built using MATLAB/Simulink, such models cannot be used in large-scale simulation software for power system dynamic studies. To solve this problem, the dynamic load model for the medium voltage cascaded H-bridge multi-level inverter drive and induction motor systems, which is suitable for power system dynamic studies, is proposed in this paper. Analytical formula of the model is presented. The model includes the aggregated effect of an MVD, an induction motor, and their control system, and thus, it can accurately represent the dynamic responses of the motor drive system under disturbances. Both voltage and frequency dependence are considered in the model. The accuracy of the model is verified by a case study. A sensitivity study is conducted to evaluate the impact of the model parameter variation on dynamic response characteristics. The developed load model can be readily inserted in the large-scale power system simulation software for power system dynamic studies. © 2014 IEEE.
引用
收藏
页码：13 / 23
页数：10
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