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首页> 外文期刊>Power Electronics, IEEE Transactions on >A Unified Fault-Tolerant Current Control Approach for Five-Phase PM Motors With Trapezoidal Back EMF Under Different Stator Winding Connections
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A Unified Fault-Tolerant Current Control Approach for Five-Phase PM Motors With Trapezoidal Back EMF Under Different Stator Winding Connections

机译：梯形反电动势的五相永磁电动机在不同定子绕组连接下的容错电流统一控制方法

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摘要

A unified approach for fault-tolerant current control of five-phase permanent-magnet (PM) motors with trapezoidal back EMF is proposed for open-circuit phase and line faults. In addition to conventional star connection, five-phase PM motors can be connected in two penta-type connections, pentagon and pentacle. In the proposed unified approach, a general solution for fault-tolerant currents is presented which uses only the fundamental and third-harmonic current components for the excitation of the healthy stator phases. The proposed approach is based on mirror symmetry of healthy phase current with respect to the fault location and it is optimized to increase output average torque while reducing torque pulsations and minimizing ohmic losses. A general parametric solution is presented which can be applied to five-phase motor drives with any fault condition and winding connection by selecting proper optimization constraints. It is shown that penta-type connection results in improved fault-tolerant capability in terms of maximum ripple-free torque due to the absence of zero-neutral current constraint. Experimental results are presented to verify the proposed solutions for fault-tolerant current control.
机译：提出了一种用于梯形反电动势的五相永磁（PM）电动机容错电流控制的统一方法，用于开路相和线路故障。除了传统的星形连接，五相永磁电动机还可以连接成两个五角形和五角形五角形连接。在提出的统一方法中，提出了一种容错电流的通用解决方案，该解决方案仅使用基波和三次谐波电流分量来激励健康的定子相。所提出的方法基于相对于故障位置的健康相电流的镜像对称性，并且已进行了优化，以增加输出平均转矩，同时减少转矩脉动并最小化欧姆损耗。提出了一种通用的参数化解决方案，可以通过选择适当的优化约束将其应用于具有任何故障条件和绕组连接的五相电动机驱动器。结果表明，由于没有零中性电流限制，五角型连接在最大无脉动转矩方面提高了容错能力。实验结果被提出来验证所提出的解决方案的容错电流控制。

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