一种具有容错功能的开关磁阻电机初始位置估计方法

发布时间：2018-06-16 08:09

本文选题：开关磁阻电机 + 无位置传感器　；参考：《电工技术学报》2014年07期

【摘要】：初始位置估计是开关磁阻电机无位置传感器技术研究的关键。本文提出一种具有容错功能的开关磁阻电机初始位置估计方法。该方法利用双电流阈值将电感周期分成不同区域,在电机静止或惯性运行中,各相绕组同时注入高频脉冲,通过脉冲电流峰值与双电流阈值的比较估计初始分区,再由初始分区选择对应的脉冲电流与位置角之间的数学模型来估算出转子初始位置角。设置双电流阈值可以避免在电感最大和最小区域脉冲电流变化微小而带来的位置估计误差。为了增加开关磁阻电机初始位置估计容错功能,还提出了一种缺相故障运行下的初始位置估计方法。通过在静止、惯性运行、缺相故障三个状态下的初始位置估计实验,验证了该方法的可行性。
[Abstract]:Initial position estimation is the key to the research of position sensorless technology for switched reluctance motor (SRM). In this paper, a fault tolerant method for initial position estimation of switched reluctance motor (SRM) is proposed. In this method, the inductance period is divided into different regions by using the double current threshold. In the static or inertial operation of the motor, high frequency pulses are injected into each phase winding at the same time, and the initial regions are estimated by comparing the peak value of the pulse current with the threshold of the double current. Then the initial rotor position angle is estimated by selecting the corresponding mathematical model between the pulse current and the position angle from the initial partition. Setting double current threshold can avoid the position estimation error caused by the small change of pulse current in the maximum and minimum region of inductance. In order to increase the fault tolerance of the initial position estimation of switched reluctance motor, a new method of initial position estimation is proposed in this paper. The feasibility of this method is verified by the initial position estimation experiments in three states: static, inertial operation and phase deficiency fault.
【作者单位】：南京航空航天大学自动化学院;
【基金】：国家自然科学基金(50407003) 江苏省“六大人才高峰”资助项目
【分类号】：TM352

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