混合永磁轴向磁场磁通切换记忆电机分段弱磁控制  

Flux-weakening Stage Control of Hybrid Permanent Magnet Axial Field Flux-switching Memory Machines

作　　者：杨公德 林明耀[1] 李念 付兴贺[1] 刘凯[1] 谭广颖 张贝贝 孔永 

机构地区：[1]东南大学伺服控制技术教育部工程研究中心,江苏省南京市210096

出　　处：《中国电机工程学报》2017年第22期6557-6566,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50977010;51277025);江苏省科技计划项目(BE2011140)~~

摘　　要：混合永磁轴向磁场磁通切换记忆电机(hybrid permanent magnet axial field flux-switching memory machine,HPM-AFFSMM)采用钕铁硼和铝镍钴两种永磁励磁,既具有轴向磁通切换永磁同步电机转矩和功率密度高的优点,又具有记忆电机永磁磁化状态在线可调的特点。在研究HPM-AFFSMM调磁原理、电磁参数及数学模型的基础上,提出了一种HPM-AFFSMM宽调速控制方法。基于分区控制,低速区采用永磁饱和磁化方式运行,高速区采用分段弱磁方式运行。在分段弱磁区域,所需永磁磁链满足给定转速所在区间内的最大转速对应的永磁磁链。在全速度范围内,为实现充去磁,提出了一种对电机参数敏感性较低的自适应永磁磁链观测器设计方法。仿真和实验结果表明,在低速区,饱和增磁运行缩短了电机的起动过程;在高速区,分段弱磁运行优化了永磁磁链的控制,拓宽了电机的调速范围。因此,HPM-AFFSMM非常适合应用于电动汽车起/发一体机。Due to the usage of Nd Fe B and Al Ni Co for hybrid excitations, hybrid permanent magnet axial field flux-switching memory machine（HPM-AFFSMM） exhibits the merits of high torque/power density as well as the online flux-adjustment characteristic. This paper proposed a novel wide speed range control strategy on the basis of the investigation of the flux-regulation principle, electromagnetic parameters and mathematical model of HPM-AFFSMM. Based on speed stage control, the PMs were fully magnetized in the low speed region, while the flux-weakening stage control algorithm was proposed in the high speed region, in which the required PM flux equaled the value corresponding to the maximal speed of one divided speed interval. In order to magnetize or demagnetize the PMs, an adaptive PM flux observer, which was insensitive to machine parameters, was presented over the whole speed range. Both the simulation and experimentation show that the control strategy proposed enables the machine to promptly accelerate the speed in the low speed region and optimize the flux control to extend the speed range in the high speed region. Therefore, the HPM-AFFSMM is very suitable for the integrated starter/generator（ISG） application.

关 键 词：混合永磁 磁通切换 记忆电机 在线调磁 分段弱磁 自适应永磁磁链观测器 

分 类 号：TM351[电气工程—电机]