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首页> 外文期刊>European transactions on electrical power engineering >Fault-tolerant multi-level inverter topologies for open-end winding induction motor drive
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Fault-tolerant multi-level inverter topologies for open-end winding induction motor drive

机译：容错多电平逆变器拓扑开口绕组感应电机驱动器

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摘要

This paper presents two nine-level inverter topologies for open-end winding induction motor drive with fault-tolerance for all possible switch faults. The proposed topologies are designed with three voltage-source inverters each with eight switches, an isolated DC source and a capacitor. The number of components and the scheme of connection employed for phase windings in both the topologies are identical. The voltage across the capacitors is controlled using the phase currents and hence does not require any additional pre-charging circuit. The direction of phase currents flowing through the capacitors determines their charging and discharging states. Hence the proposed topologies are categorized as flying-capacitor leg based topology (FCLBT) and switched-capacitor based topology (SCBT) considering the technique employed for generating intermittent voltages. Although these topologies require three sources, the output voltage peak across each phase winding would be twice the source voltage, hence lower rating renewable energy sources can be employed as input sources. Conventional level-shifted carrier sinusoidal pulse width modulation technique (SPWM) is employed for generating switching pulses. The proposed topologies employ reduced number of devices compared to existing similar nine-level topologies and also exhibit fault-tolerance for switch faults. The post-fault operation of the proposed topologies does not require any additional hardware but necessitates the modifications of switching pulses. Simulations are performed in the MATLAB/Simulink environment and results are presented. A prototype is constructed to validate the performance of the proposed topologies and experimental results are presented.
机译：本文为开放式绕组感应电机驱动器提供了两种九个级逆变器拓扑，具有容错可容许所有可能的开关故障。所提出的拓扑设计有三个电压源逆变器，每个电压源逆变器，八个开关，隔离直流源和电容器。在两个拓扑中，在两个拓扑中用于相位绕组的组件数量和连接方案是相同的。使用相电流控制电容器两端的电压，因此不需要任何额外的预充电电路。流过电容器的相电流的方向决定了它们的充电和放电状态。因此，考虑到用于产生间歇电压的技术，所提出的拓扑结构被作为基于飞行电容器腿的拓扑（FCLBT）和基于开关电容器的拓扑（SCBT）分为基于电容器腿基拓扑（FCLBT）和基于开关电容器的拓扑（SCBT）。虽然这些拓扑需要三个源，但是每个相绕组的输出电压峰值是源电压的两倍，因此较低的额定值可再生能源可以用作输入源。使用传统的水平移位载波正弦脉冲宽度调制技术（SPWM）用于产生切换脉冲。与现有相似的九个级别拓扑相比，所提出的拓扑利用减少数量的设备，并且还表现出用于开关故障的容错。拟议拓扑的故障后操作不需要任何额外的硬件，但需要改进开关脉冲。模拟在Matlab / Simulink环境中执行，并呈现结果。构建原型以验证所提出的拓扑和实验结果的性能。

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