Symmetrical Hybrid Multilevel Inverters for Ship Electric Propulsion Drives

2019 IEEE 4th International Future Energy Electronics Conference (IFEEC) Pub Date : 2019-11-01 DOI:10.1109/IFEEC47410.2019.9015090

Wenfeng Long, Nianzhou Liu, Kui Wang, Zedong Zheng, Yongdong Li

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引用次数: 6

Abstract

Medium voltage direct current (MVDC) based ship integrated power system (IPS) is regarded as the future developing trend of ship power system. Medium-voltage high power inverter for ship electric propulsions is one of the key problem. In order to improve the output voltage, power and harmonic performance, a family of symmetrical hybrid multilevel inverter for open-winding multi-phase motor based propulsion drive is presented in this paper. Each phase of this inverter is composed of a high-frequency multilevel DC/DC converter cell and a high-voltage H-bridge cell. The DC/DC converter is operated at high frequency with low voltage devices and the H-bridge is operated at fundamental frequency with high voltage devices. All the phases are connected to a common DC-link and each drives an isolated winding of an open-winding motor. A symmetrical hybrid five-level topology is taken as an example and the control method is discussed in this paper. Simulation results demonstrate the feasibility of this topology and control method.

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舰船电力推进驱动的对称混合多电平逆变器

基于中压直流(MVDC)的船舶综合电力系统(IPS)被认为是船舶电力系统的未来发展趋势。中压大功率逆变器是船舶电力推进系统的关键问题之一。为了提高系统的输出电压、功率和谐波性能，提出了一种基于开路绕组多相电动机推进驱动的对称混合多电平逆变器。该逆变器的每一相由高频多电平DC/DC变换器单元和高压h桥单元组成。DC/DC变换器使用低压器件在高频工作，h桥使用高压器件在基频工作。所有的相都连接到一个共同的直流链路上，每个相驱动一个开绕组电机的隔离绕组。本文以对称混合五层拓扑为例，讨论了控制方法。仿真结果验证了该拓扑和控制方法的可行性。

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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2019 IEEE 4th International Future Energy Electronics Conference (IFEEC)

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