DEVELOPMENT RESEARCH OF THE SURFACE INDUCTION MOTOR

作为一种具有任意方向直线运动和旋转功能的二维驱动电机，对表面感应电机进行了研究。该电机具有由环状铁心和分别提供电流的电枢线圈组成的初级部件，次级部件由导电板和背铁板组成。由于主要杆件为圆形，次要杆件没有方向性，因此所产生的力在任何平面位置都不会改变。以下事实变得清晰起来。作为一种向每个线圈提供电流的方法，使直线传动的两组绕组成为一种方法，从力的大小来看，使用所有线圈的方法是最好的。当左、右绕组电流密度的空间分布相对于直线运动的轴线相互点对称时，得到最大力。针对直线传动中采用三相逆变器进行换向的问题，提出了分绕式表面感应电机。明确了六分绕组三相逆变器或八分绕组四三相逆变器的配置是可行的。在圆形表面感应电机中，其运行磁场在运动方向上的等效同步速度为0.88倍。与二维驱动的双直线电机结构相比，使用两个电机时的推力小于地面感应电机的推力，两电机结构的等效同步转速是地面感应电机的0.707倍。并且，使用一台同步转速为1.0的电机时，所受的力较小。也就是说，表面感应电机具有优越的性能。

As a two-dimensional drive motor with functions of any directional linear movement and rotation, the surface induction motor is studied. The motor has the primary member composed with a toroidal core and armature coils supplied the current separately, and the secondary member is composed of a conducting plate and a back iron plate. As the primary member is the circular shape and the secondary member has no directional quality, the generated force does not change at any planar position. The following facts became clear.1. As a method for the supply of the current to each coil to make the two groups of windings for the linear drive, the method using all coils is best in the point of the magnitude of the force. The maximum force is obtained at the condition that the space distributions of current density of the right and left windings are point symmetry each other to the axis of linear motion.2. For the use of three-phase-inverters for the change of direction in linear drive, we proposed the divided winding type surface induction motor. It is cleared that the configuration with six divided windings and three three-phase inverters or the configuration with eight divided windings and four three-phase inverters in useful.3. In the circular shaped surface induction motor, it is cleared the equivalent synchronous speed in the moving direction for the traveling field is 0.88 times. By comparing with the two linear motors configuration for two-dimensional drive, the thrust at the use of two motors is less than that of the surface induction motor, the equivalent synchronous speed of the two motors configuration is 0.707 times. And, the force at the use one motor with the synchronous speed of 1.0 is small. That is, the surface induction motor has superior performance.