梯形波相电流驱动六相感应电机建模与控制  

Modeling and controlling of six-phase induction machine driven trapezoidal phase current waveform

作　　者：艾永乐[1] 王玉梅[1] KAMPER Marrten 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]Department of Electrical&Electronic,Stellenbosch University

出　　处：《电机与控制学报》2012年第3期71-77,共7页Electric Machines and Control

基　　金：河南省国际合作科研基金(0646660007);河南理工大学博士研究基金(648207)

摘　　要：针对交流电机的气隙磁链定向控制具有气隙磁通能被直接测量的优点,但要实现气隙磁链定向控制必须采用派克变换算法,使控制系统复杂化和运算量大等缺点,提出了一种气隙磁链定向控制策略: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。采用有限元分析,研究六相电机的主要性能,建立六相电机定子相电路模型。整个六相电机驱动系统的性能通过实验完成。结果表明该种控制方案可以真正实现磁链和转矩的独立控制,使控制器结构简单,具有便于实现特点。Airgap flux linkage orientated control of the AC machine is of the advantage that the airgap flux can be measured directly.But,the Park transformation should be used to realize the airgap flux oriented control and the control system is complicated due to large amount of computation.Based on shortcomings above,the paper proposed an airgap flux oriented control strategy that is trapezoidal wave phase current control which consists of field current and torque current components.At any instant,three neighboring phases form a field winding,while the other three neighboring phases form torque winding.The configuration of the current waveforms makes the six-phase machine operate like a DC machine allowing the field and torque currents to be controlled separately without complex Park transformations.The main performance of the six-phase machine including the machine modeling is determined with finite element（FE） analysis.Furthermore the control strategy proposed is experimentally verified by using the six-phase induction drive system built.The results show that the field and torque current components of the six-phase machine can be controlled separately without any coordinate transformation and the controller to realize the control scheme is simple.

关 键 词：梯形波相电流 转矩 有限元 六相感应电机 

分 类 号：TM51[电气工程—电器] TM921.5