Modeling Method for Real Time Simulation of Modular Multilevel Converter

被引：0
|
作者：
Zhang H. [1 ]
Hao Z. [1 ]
Chen Z. [1 ]
Wu Y. [1 ]
Xiao Z. [1 ]
Yuan W. [1 ]
机构：
[1] College of Electrical Engineering, Guizhou University, Guiyang
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2017年 / 41卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Modular multilevel converter; Multi-core parallel simulation; Prediction of interpolation; Segmentation of circuit model; Serial simulation;
D O I：
10.7500/AEPS20160707009
中图分类号：
学科分类号：
摘要：
In order to realize real-time simulation of the modular multilevel converter (MMC) system, an ideal transformer model is used to segment the MMC. To deal with the waveform distortion problem caused by model segmentation delay, a method of error compensation for serial and parallel real-time simulation using interpolation prediction and advance prediction is proposed, respectively. In addition, in order to further improve the calculation speed of sub-module groups after model segmentation, the switching function equivalence model and electromagnetic transient numerical model of MMC sub-module network are proposed, and the difference equation of the output voltage and the capacitor voltage of the sub-module in the numerical model are deduced. Then, taking the 21 level MMC inverter circuit as an example, the above MMC modeling method and the original integral model are compared and analyzed. The results show that the proposed method can effectively improve the stability of the MMC segmentation model featuring very high simulation accuracy. The proposed switching function model and the electromagnetic transient numerical model have very good acceleration effect, and the electromagnetic transient numerical model is in good agreement with the simulation results of the detailed model. The proposed modeling method is applied to the construction of the MMC real-time simulation test platform. © 2017 Automation of Electric Power Systems Press.
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收藏
页码：120 / 126
页数：6
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