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首页> 外文期刊>Power Electronics, IET >Modified H-bridge inverter based fault-tolerant multilevel topology for open-end winding induction motor drive
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Modified H-bridge inverter based fault-tolerant multilevel topology for open-end winding induction motor drive

机译：基于改进型H桥逆变器的开放式绕组感应电动机驱动器的容错多级拓扑

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摘要

This study presents a three-phase modified H-bridge based multilevel inverter (MLI) topology for an open-end winding induction motor drive (OEWIMD). The operation of the proposed topology under open-circuit and short-circuit fault conditions of a switch is investigated. Proposed MLI topology is designed with three three-phase modified H-Bridge inverters connected in a star configuration to feed an OEWIMD. This topology has advantage of delivering a maximum voltage of twice the supply voltage and is replicated as nine levels in the phase windings of OEWIMD, thereby reducing the total harmonic distortion. Therefore, lower voltage rating sources such as solar cells or fuel cells can be used for this topology. This topology becomes cost effective since the operating voltage range required for the devices is less. Controlling methods such as conventional level-shifted and multi-reference sinusoidal pulse width modulation techniques can be applied for this topology. A fault-tolerance strategy is proposed for inverter switch open-circuit and short-circuit faults that adds fault-tolerance capability to the proposed topology. Simulations were performed using MATLAB/Simulink and experimental results are presented for both normal operating and fault-tolerance mode that confirms the inherent fault-tolerance property of the proposed MLI topology.
机译：这项研究提出了一种用于开放式绕组感应电动机驱动器（OEWIMD）的三相改进型基于H桥的多电平逆变器（MLI）拓扑。研究了所提出的拓扑在开关的开路和短路故障条件下的操作。拟议的MLI拓扑设计为以星形配置连接三个三相修改的H桥逆变器，以馈入OEWIMD。这种拓扑结构的优点是可以提供两倍于电源电压的最大电压，并且可以在OEWIMD的相绕组中复制为九个电平，从而降低了总谐波失真。因此，较低额定电压的源（例如太阳能电池或燃料电池）可用于此拓扑。由于设备所需的工作电压范围较小，因此该拓扑变得具有成本效益。诸如常规的电平移位和多参考正弦脉冲宽度调制技术之类的控制方法可以应用于该拓扑。针对逆变器开关的开路和短路故障，提出了一种容错策略，该策略为所提出的拓扑结构增加了容错能力。使用MATLAB / Simulink进行了仿真，并给出了正常工作模式和容错模式的实验结果，证实了所提出的MLI拓扑的固有容错特性。

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