Operation, Design, and Losses of the Modular Multilevel Matrix Converter in a Flywheel Energy Storage System

IF 7.9 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Industry Applications Pub Date : 2023-10-11 DOI:10.1109/OJIA.2023.3323855

Jonas Kienast;Steffen Bernet;Gino Sturm

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引用次数: 0

Abstract

This article presents an analysis of selected characteristics of the modular multilevel matrix converter (M3C) operating a doubly fed induction generator (DFIG) in a flywheel energy storage system. A detailed analysis of the necessary electrical input and output quantities, as well as the identification of required internal currents and voltages, leads to a newly introduced iterative design process for the converter. This process ultimately provides information on the required number of submodules and demonstrates the overload capability of the converter in reactive power operation. Also, the short-circuit current contribution of the system for this unique configuration of M3C and DFIG is investigated for the first time. Taking into account the unique operating characteristics of the M3C, a loss analysis of the converter and the machine is performed, and a loss-optimized distribution of reactive power between the machine and the converter is proposed. The article is conducted analytically and is validated by experimental results on a small-scale demonstrator.

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飞轮储能系统中模块化多电平矩阵变换器的运行、设计和损耗

本文分析了飞轮储能系统中运行双馈感应发电机(DFIG)的模块化多电平矩阵变换器(M3C)的选择特性。对必要的电输入和输出量的详细分析，以及所需的内部电流和电压的识别，导致了转换器的新引入的迭代设计过程。该过程最终提供了所需子模块数量的信息，并演示了变流器在无功运行中的过载能力。此外，本文还首次研究了这种独特的M3C和DFIG结构对系统短路电流的贡献。针对M3C独特的运行特性，对变流器和机器进行了损耗分析，提出了机器和变流器之间的无功功率损耗优化分配方案。本文进行了分析，并通过小型样机的实验结果进行了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Open Journal of Industry Applications

CiteScore

13.50

自引率

0.00%

发文量