升降机构用铁氧体永磁电机位置控制  

Vector Control of Permanent Magnet Motor Using Hall Sensors for Electric Vehicles

作　　者：易磊 曲荣海[1] 李健[1] 李新华[2] YI Lei;QU Rong-hai;LI Jian;LI Xin-hua(Huazhong University of Science and Technology,Wuhan 430074,China;不详)

机构地区：[1]华中科技大学,电气与电子工程学院,湖北武汉430074 [2]湖北工业大学,电气与电子工程学院,湖北武汉430068

出　　处：《电力电子技术》2020年第6期78-82,共5页Power Electronics

基　　金：国家自然科学基金(51520105010,51877094)。

摘　　要：针对升降机构用永磁电机存在编码器成本高及重物下放时制动泵升电压的问题,首先提出采用低廉的霍尔传感器的位置检测方案,并使用平均速度法估算连续的转子位置。其次利用内置式铁氧体永磁电机节约磁钢成本,实现电机的矢量控制。然后为满足重物升降过程的运行要求,建立位置控制框图并研究不同位置控制策略。分析永磁电机制动原理,定量推导反馈功率并给出制动电阻选取原则。最后搭建以STM32F103为核心的实验平台进行方案验证。实验结果表明,所提方案能实现升降机构运行要求。To solve the problem of high encoder cost and overpressure of the brake pump when the weight is lowered.A position detection scheme using an inexpensive Hall sensor is proposed,and the average speed method is used to estimate the continuous rotor position.The built-in ferrite permanent magnet motor is used to save the cost of the magnetic steel and realize the vector control of the motor.Then,in order to meet the operational requirements,a position control block diagram is established and different position control strategies are studied.The brake principle of permanent magnet motor is analyzed later,the feedback power is quantitatively derived and the principle of braking resistor selection is given.Finally,a STM32 F103-based experimental platform is built to verify the scheme.The experimental results show that the proposed scheme can realize the operation requirements of the lifting mechanism.

关 键 词：永磁电机 霍尔传感器 位置控制 

分 类 号：TM351[电气工程—电机]