Multi-level Inverters Application Features for Medium Voltage Electric Drives

2018 Dynamics of Systems, Mechanisms and Machines (Dynamics) Pub Date : 2018-11-01 DOI:10.1109/DYNAMICS.2018.8601464

O. A. Lysenko, I. Y. Marchinskiy

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引用次数: 1

Abstract

the article analyzes the energy characteristics of a medium voltage electric drive with multilevel converters. The research relevance is confirmed by the diverse requirements for energy converters such as insuring high efficiency and power factor, and maximum reliability and stability. The study objective: the frequency-controlled electric drive’s dynamic characteristics analysis with using a multi-level voltage converter based on H-bridges structures. Research methods: the electric machines theory, power electronics, operational calculation, harmonic analysis, numerical simulation. The transient processes of the medium voltage induction motor during start-up are considered. To simulate the characteristics of the electric drive, the model of an asynchronous machine in a fixed coordinate system was used. A comparison is made of the electric drive characteristics as a whole with a multilevel inverter and with a three-phase inverter according to the bridge circuit. The multilevel medium voltage inverters efficiency, as well as the ways of further development, is shown.

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中压电力驱动的多级逆变器应用特点

分析了一种带多电平变换器的中压电传动的能量特性。对能源变换器的各种要求，如保证高效率和功率因数，以及最大的可靠性和稳定性，证实了研究的相关性。研究目的:采用基于h桥结构的多级电压变换器进行变频调速电传动的动态特性分析。研究方法:电机理论、电力电子学、运行计算、谐波分析、数值模拟。研究了中压感应电动机启动过程中的瞬态过程。为了模拟电传动的特性，采用了固定坐标系下的异步电机模型。根据桥式电路，从整体上比较了多电平逆变器和三相逆变器的电驱动特性。指出了多电平中压逆变器的效率及其进一步发展的途径。

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2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)

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