摘要
近年来,一类采用高剩磁、低矫顽力永磁材料的记忆电机被广泛研究。这类电机可以通过施加电流脉冲直接调节永磁体的磁化水平,从而大大拓宽电机的弱磁调速范围。简要介绍磁通切换型记忆电机的拓扑结构和数学模型,在此基础上通过对于磁通切换型记忆电机的运行区的分析,提出了一种将在线调磁与传统弱磁相结合的控制策略,以在增大恒转矩输出能力的同时拓宽电机的调速范围。仿真计算证明了提出的控制策略的有效性。
Memory machines （MMs） equipped with PMs having intrinsically low coercivity and high remanence were extensively investigated recently. They can achieve efficient online flux-adjustment by applying a temporary remagnetizing or demagnetizing current pulse to vary the magnetization state of PMs, thereby exhibiting advantageous feasibility for wide speed range operations. It briefly introduces the topology of a novel flux-switching MM （FSMM） to be controlled, and the corresponding mathematic model is derived. In order to obtain high output torque in constant torque region and wide speed range at the same time, a new control strategy which integrates conventional flux-weakening scheme with online magnetization control is proposed based on the detailed analysis of operation regions of the machine. A simulation model of the machine is built with the aid of MATLAB/Simulink to validate the effectiveness of the proposed control scheme.
出处
《微特电机》
北大核心
2016年第10期4-9,共6页
Small & Special Electrical Machines
关键词
磁通切换
记忆电机
控制策略
仿真研究
flux switching
memory machine
control strategy
simulation validation
