电动汽车用五相感应电机容错控制

发布时间：2018-04-02 21:06

本文选题：多相电机　切入点：电动汽车　出处：《电机与控制学报》2014年03期

【摘要】：多相感应电机具有高效、低转矩脉动,能容错运行以及更易于实现低压大功率等优势,特别适合应用于电动汽车。针对驱动系统常出现的缺相故障,基于故障前后定子磁动势保持不变的原则研究了容错控制策略,并探讨了3次谐波注入后,1、3次谐波之间的磁场耦合及其对电机转矩等性能的影响。为解决滞环控制产生的转矩脉动和效率下降等问题,电流环采用了比例谐振控制方式,利用其谐振点附近的高增益,实现了相坐标系下的无静差控制。构建了一套低直流母线电压供电的五相感应电机控制系统,通过一相和两相绕组断开故障等实验,研究对比了不同控制策略下电机的性能,及各控制策略中谐波耦合的影响。
[Abstract]:Multi-phase induction motor has the advantages of high efficiency, low torque ripple, fault-tolerant operation and easy realization of low-voltage and high-power, so it is especially suitable for electric vehicles.The fault tolerant control strategy is studied based on the principle that the stator magnetodynamic force remains invariant before and after the fault.The magnetic field coupling between the first and third harmonics after the third harmonic injection and its effect on the torque and other performance of the motor are discussed.In order to solve the problems of torque ripple and efficiency decline caused by hysteresis control, the proportional resonance control method is adopted in the current loop. By using the high gain near the resonant point, the static error free control is realized in the phase coordinate system.A five-phase induction motor control system with low DC bus voltage is constructed. The performance of the motor under different control strategies and the effect of harmonic coupling in each control strategy are studied and compared through the experiments of breaking faults between one phase and two phase windings.
【作者单位】：浙江科技学院自动化与电气工程学院;浙江大学电气工程学院;
【基金】：国家重点基础研究发展计划项目(973计划项目)(2013CB035604) 浙江科技学院学科交叉项目(2011JC02Y)
【分类号】：TM346;U469.72

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