DEVELOPMENT RESEARCH OF THE SURFACE INDUCTION MOTOR

作为一种具有任意方向线性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。所述电机的初级部件由环形铁芯和分别供电的电枢线圈组成，次级部件由导电板和后铁板组成。由于主构件为圆形，次构件不具有方向性，因此在任意平面位置产生的力都不发生变化。下列事实变得清楚了。作为一种为每个线圈提供电流以使两组绕组进行线性驱动的方法，使用所有线圈的方法在力的大小上是最好的。当左右绕组电流密度的空间分布与直线运动轴线互为点对称时，可得到最大的力。针对三相逆变器在直线传动中的方向转换问题，提出了分绕组式表面感应电动机。明确了6分绕组3三相逆变器的配置或8分绕组4三相逆变器的配置是有用的。在圆形表面感应电动机中，清除了运动方向上的等效同步速度为行进场的0.88倍。通过对比两种直线电机配置的二维驱动，两种电机使用时的推力小于表面感应电机，两种电机配置的等效同步速度为0.707倍。并且，在使用一台同步转速为1.0的电机时受力较小。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.