摘要
三相开关式霍尔位置传感器常用于检测永磁同步电机低分辨率的转子位置信息。针对霍尔信号不对称引起转子位置及速度估算误差增大的问题,该文提出基于霍尔矢量相位跟踪的永磁同步电机转子位置与速度估算方法。首先将三相霍尔信号经过3/2坐标变换转换为包含转子位置信息的霍尔旋转矢量;然后将同频跟踪滤波器分别作用于旋转矢量的两个正交分量,滤除其中的高频干扰,得到与转子位置相关的基频信号,该信号分别为转子位置的正弦与余弦函数;最后利用正交锁相环提取出精确的转子位置与速度信息。该方法可以有效降低由于安装工艺导致霍尔信号不对称所引起的转子位置及速度估算误差,实施过程简单,估计精度好,对电机参数不敏感,性价比高。仿真分析与实验验证了所提方法的正确性和有效性。
Three-phase hall sensors are commonly utilized in permanent-magnet synchronous motor (PMSM) to provide low resolution rotor position.In order to correct the rotor position estimation error of PMSM,the hall vector phase tracking (HVPT) method was proposed.Firstly,the hall rotation vector which contains the rotor position information was obtained by 3/2 coordinate transformation.Secondly,the synchronous frequency tracking-filters were applied in two orthogonal components of the hall rotation vector.Next,the fundamental waves which contain the sine and cosine function of the rotor position were obviously obtained as their high-order harmonic nosies were filtered out.Finally,the orthogonal phase-locked loop was used in the fundamental waves to estimate the rotor position and speed.This method using HVPT which can compensate the estimated error caused by the mechanical unevenness related to hall sensors has the feature of no needs for system parameters,easily implemented and low cost.The validity of the proposed method is verified through simulation and experimental results.
作者
赵远洋
韩邦成
陈宝栋
Zhao Yuanyang;Han Bangcheng;Chen Baodong(Science and Technology on Inertial Laboratory,Beihang Univerity,Beijing,100191,China;Beijing Engineering Research Center of High-Speed Magnetically Suspended Motor Technology and Application,Beijing,100191,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2019年第15期3147-3157,共11页
Transactions of China Electrotechnical Society
基金
民用航天技术预先研究项目
国家自然科学基金项目(61822302)资助
关键词
霍尔位置传感器
位置与速度估算
坐标变换
同频跟踪滤波器
正交锁相环
Hall sensors
position and speed estimation
coordinate transformation
synchronous frequency tracking-filter
orthogonal phase-locked loop
