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开关磁阻电机转矩脉动及结构优化设计研究

材料写作网    时间: 2020-06-29 05:14:15     阅读:次     手机站


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摘 要:以轮毂电机为动力的四轮独立驱动电动车是电动车未来的发展方向之一。开关磁阻(switched reluctance)电机因为输出扭矩大,性能可靠等特点而成为较理想的驱动电机。针对SR电机输出转矩脉动大,影响电动汽车运行的舒适性和操纵稳定性的问题,深入分析了SR电机转矩脉动产生的原因,提出了相应的优化设计方案,并采用粒子群算法对设计参數进行了优化。研究结果表明:经改进设计以后,在激励电流为10 A时,SR电机的转矩脉动减少了21.42%;在激励电流为20 A时,转矩脉动减少24.32%,对改善四轮独立驱动电动汽车的舒适性和操纵稳定性具有重要意义。

关键词:四轮驱动; 轮毂电机; 开关磁阻电机;转矩脉动; 粒子群算法

中图分类号:TM 352

文献标志码:A

文章编号:1007-449X(2018)06-0011-11

Abstract:Inwheel motor as the driving force of the fourwheel independent drive electric vehicle is one of the automotive industry trends. Switched reluctance (SR) motor becomes an ideal inwheel motor candidate because of the high output torque and reliable performance. However, huge output torque ripple hinders its further application. In this paper, reasons caused torque ripple in SR motor were analyzed, and corresponding improved scheme of SR motor was proposed. Moreover, design parameters of motor were optimized by particle swarm optimization algorithm. The results show that after improved design, when excitation current is 10 A, torque ripple of motor is reduced by 21.42%. And when excitation current is 20 A, a decrease of 24.32% is observed.

Keywords:fourwheel drive; inwheel motor; switched reluctance; torque ripple; particle swarm optimization

0 引 言

以轮毂电机为动力的四轮独立驱动电动车,取消了传统的机械传动系统,以集成车轮上的电机为动力源,减...



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