梯形波相电流驱动下六相感应电机气隙磁密研究  

Research on the Air Gap Flux Density of the Six-Phase Induction Machine Based on Trapezoidal Phase Current Waveform

作　　者：艾永乐[1] 牛联波[1] 艾宝[1] 

机构地区：[1]河南理工大学,河南焦作454000

出　　处：《微特电机》2009年第6期21-23,28,共4页Small & Special Electrical Machines

基　　金：河南省国际合作科研基金(0646660006);河南理工大学博士研究基金(648207)

摘　　要：针对多相电机控制模式复杂性的特点,提出一种新颖的控制方式:即六相感应电机梯形波相电流控制。该梯形波相电流由励磁电流和转矩电流组成,在该梯形波相电流驱动下六相定子绕组可以分为励磁绕组和转矩绕组,模拟直流电机实现励磁磁场和转矩的直接控制而不需要复杂的派克变换。通过理论分析计算、有限元分析和实验测量数据来研究梯形波相电流驱动下六相感应电机气隙磁密分布,并对磁势解耦参数k进行了理论分析和计算。With the complexity of the control of multiphase machines,a novel control method was proposed in this paper,namely six-phase motor trapezoidal wave phase current control. By using the trapezoidal phase current waveform,the stator winding was separated into the field winding and the torque winding. The function which was about the field and torque control in direct and separate mode could be realized without the complex Park transformation. The airgap flux density of the six-phase induction motor using trapezoidal wave phase current was investigated in this paper. Three methods, namely conventional analytical calculation,finite element calculation and practical measurement were used to verify the air gap flux density of the motor. The parameter of k-value as MMF decoupling was analyzed and caculated. The result of the air gap flux density obtained from these methods showed a good agreement. The flux density waveform in the air gap to analogy DC motor could be realized in practice .

关 键 词：六相感应电机 梯形波相电流 气隙磁密 有限元 

分 类 号：TM346[电气工程—电机]