直接驱动低速横向磁场开关磁阻电机研究

为了提高开关磁阻电机(switched reluctance motor，SRM)的转矩密度，实现低速、大转矩输出，满足伺服和电动车等直接电气驱动系统的要求，提出一种新型横向磁场开关磁阻电机(transverse flux switched reluctance motor，TFSRM)。将横向磁场电机的原理应用于开关磁阻电机，简化电机结构复杂程度，提高电机的转矩密度。详细介绍该电机工作原理及结构特点，运用三维等效磁网络法分析样机定、转子不同相对位置时的磁场分布，计算恒电流控制时电机的矩角特性。设计基于DSP(digital signal processor)的电流闭环控制系统，并对样机进行试验。试验结果与理论分析相吻合，理论分析与设计方法的可行性和有效性得到验证。

Study on a low-speed direct drive transverse-flux switched reluctance motor

In order to improve the torque density of switched reluctance motor (SRM), achieve low speed and large torque output, and meet the requirements of direct electrical drive systems such as servo and electric vehicle, a new type of transverse magnetic flux switch reluctance motor (TFSRM) was proposed. The principle of transverse flux motor was applied to switch reluctance motor, which simplified the complexity of the motor structure and improved the torque density of the motor. The working principle and structural characteristics were introduced in detail. The magnetic field distribution of the stator and rotor in different relative positions were analyzed by the three-dimensional equivalent magnetic network method, and the torque angle characteristics of the motor were calculated under constant current control. A closed-loop current control system based on digital signal processor was designed, and the prototype was tested. The experimental results were consistent with the theoretical analysis, which verified the feasibility and validity of the theoretical analysis and design method.