摘要
为解决交替极永磁电机使用开关型霍尔时位置估算困难的问题,提出了一种基于非对称霍尔矢量谐波模型的位置估算策略。首先分析交替极永磁电机转子结构与气隙磁密,利用极弧系数重新划分非对称霍尔位置信号扇区。通过离散时间傅里叶变换构建非对称霍尔位置矢量的谐波模型,并根据其谐波模型滤除位置矢量中的高次谐波干扰。将获得的基波矢量作为矢量跟踪观测器的输入,完成对转子位置与转速的估算。最后通过实验验证表明,采用所提出的霍尔矢量谐波滤除策略能够实现高精度的转子位置与转速估算,且具有良好的动静态特性。
In order to solve the problem that it is difficulty to estimate the position of the consequent-pole permanent magnet machine when using the binary Hall,a position estimation strategy based on asymmetric Hall vector harmonic model was proposed.This paper analyzed the rotor structure and airgap flux density of the consequent-pole permanent magnet machine,and the sectors of the asymmetric Hall position signal were re-divided by the PM-arc ratio.The harmonic model of the asymmetric Hall position vector was constructed by discrete-time fourier transform,and the higher harmonic interference in the position vector was filtered according to the harmonic model.The fundamental wave vector was used as the input of the vector tracking observer to complete the estimation of the rotor position and speed.Finally,it is verified by experiments that the consequent-pole permanent magnet machine drive system with the proposed Hall vector harmonic filtering strategy can achieve highprecision rotor position and speed estimation,and has good dynamic and static characteristics.
作者
张涵
王凯
李健
张建亚
刘东
ZHANG Han;WANG Kai;LI Jian;ZHANG Jianya;LIU Dong(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu Province,China;Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration,Nanjing,211106,Jiangsu Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第7期2377-2384,共8页
Proceedings of the CSEE
基金
国家自然科学基金项目(51607089)
江苏省杰出青年基金项目(BK20180016)
航空科学基金项目(20172852022)。
关键词
交替极永磁电机
开关型霍尔
位置矢量
谐波模型
位置估算
consequent-pole permanent magnet machine
binary Hall
position vector
harmonic model
position estimation
