摘要
车用永磁电机转子位置的准确获取,对于电机运行的控制精度和车辆运行的安全、舒适性具有重要的作用,针对电机启动、低速运行阶段转子位置检测的精确度还不够理想的问题,提出一种新的永磁同步电机启动到低速阶段转子位置检测方法,给出基于磁场相等原理的d-q旋转参考坐标系下直轴和交轴电感与定子三相电感之间的关系,通过测量定子三相电感,计算相应的恒定分量和二次谐波分量,得到相应的d-q轴下的电感值用于矢量控制。搭建轮毂电机的实验测试平台,给出从启动到低速位置的检测输出结果和角度误差值,对静止状态下、负载情况下的角度误差进行对比分析,实验结果验证了所提方法的准确性,对于指导该类型电机低速下位置检测方法提供了一定的理论支撑。
Accurate rotor position of permanent magnet motor for vehicle plays an important role in the control accuracy and the safety and comfort of vehicle operation. A new permanent magnet synchronous motor position detection method was proposed on the problem that the accuracy of rotor position detection was not ideal standstill and low-speed.The relationship was given between the three-phase inductance of the stator and the inductance of the d axis and the q axis in the d-q rotating reference frame based on the principle of magnetic field equality. By measuring the three-phase inductance of the stator, the corresponding constant component and the second harmonic component were calculated, and the inductance value under the corresponding d-q axis was obtained for vector control. The experimental test platform of hub motor was built, and the output results and angle errors from start to low speed were given. The angle errors at standstill and in load conditions were compared and analyzed. The experimental results verify the accuracy of the proposed method, which provides guidance for the position detection method of this type of motor at low speed.
作者
李伟力
璩克旺
曹君慈
徐国卿
张奕黄
LI Wei-li;QU Ke-wang;CAO Jun-ci;XU Guo-qing;ZHANG Yi-huang(School of Electrical Engineering,Beijing Jiaotong University, Beijing 100044,China;School of Mechatronic Engineering and Automation,Shanghai University, Shanghai 200444,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2019年第9期18-25,共8页
Electric Machines and Control
基金
国家自然科学基金(51577007)
中央高校基本科研业务费专项资金资助(2019JBM060)
关键词
表贴式永磁同步电机
位置检测
无传感器
相移脉冲宽度调制
矢量控制
surface-mounted permanent magnet synchronous motor
position detection
sensor less
phase-shifted pulse width modulation
vector control
