摘要
无传感器控制的永磁同步电机在低速和静止时一直存在着转子位置难以检测和估算的问题,本文针对该情况提出了一种基于瞬态有限元分析的转子位置和永磁极极性检测的策略和方法.以两相凸极永磁同步电机为例,通过对永磁同步电机瞬态磁场的有限元分析,考虑铁心饱和与注入信号瞬态特性的影响,提出一种对转子位置非常敏感的组合电感的计算算法,并给出基于该组合电感的转子位置和永磁极极性检测的策略和优化转子位置检测的方法.计算结果表明,该方法能在电机静止和低速时,快速准确地判断出转子位置和永磁极极性.
The sensorless control of permanent magnet synchronous motor（PMSM） at standstill and low speed is very difficult to implement.A methodology to design and optimize the position detection strategy of PMSM using transient finite element analysis（FEA） of magnetic field is presented.It addresses those effects arising both from iron core saturation and the transient characteristics of signals.A combined inductance which is sensitive to the rotor position throughout the complete cycle is proposed for the realization of position detection.The advantage of the proposed novel algorithm is that the rotor＇s position at low speeds down to standstill can be detected easily.A two-phase PMSM with salient structure is used as an example to demonstrate the method.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2012年第5期1-6,共6页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
香港理工大学科研项目资助(PolyU5176/09E)
关键词
转子位置检测
低速
静止
有限元分析
永磁同步电机
无传感器控制
rotor position detection
low-speed
standstill
finite element analysis
permanent magnet synchronous motor（PMSM）
sensorless control
