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Study of Bearingless Motor with Rectifier Circuit Coil

带整流电路线圈的无轴承电机的研究

基本信息

批准号：
15360128
负责人：
OKA Koichi
金额：
$ 9.6万
依托单位：
Kochi University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

In this research a novel type of bearingless motor was proposed and developed. Bearingless motors are classified as actuators whose generating mechanisms for driving and bearing force are combined. The feature of the proposed bearingless motor is having a rotor with rectifier circuit coils. The rectifier circuit coils can magnetize the rotor in a fixed direction by one-way induced current. In this research, we carried out as follows.1.The feasibility of the proposed bearingless motor on the point of one-way magnetization was examined by simulations and examinations. As the result, we can verify the construction of the proposed bearingless motor.2.First prototype bearingless motor was made and examined. The motor is a radial magnetization type and the teeth of the rotor and the stator have rectangular shape. As the results of examinations this prototype fails in generating enough torque and forces because of luck of induced magnetization.3.FEM analysis were carried out for the construction of the bearingless motor. As the results, the teeth shape of the rotor and stator must be made more wide at the part facing each other. We calculated proper width of the teeth for rotating and levitating considering i) obtain more large torque, ii) reducing the impact of rotor angle for torque and force.4.The second prototype bearingless motor was made. The levitation examination were succeeded. Now we examine the performance of rotation and levitation when the rotor rotates.5.As the further study, we must made up the bearingless motor and examine the performance. In addition to this examination, we will make another type of bearingless motor, the axial magnetization type.

在这项研究中，提出并开发了一种新型无轴承电机。无轴承电机被归类为驱动力和轴承力产生机构相结合的执行器。所提出的无轴承电机的特点是具有带有整流电路线圈的转子。整流电路线圈通过单向感应电流使转子沿固定方向磁化。在本研究中，我们进行了以下工作： 1.通过仿真和实验验证了所提出的无轴承电机在单向磁化点上的可行性。结果，我们可以验证所提出的无轴承电机的结构。2.制作并测试了第一个原型无轴承电机。电机为径向磁化型，转子和定子的齿为矩形。根据检查结果，由于感应磁化的影响，该原型机未能产生足够的扭矩和力。3.对无轴承电机的结构进行了有限元分析。结果，转子和定子的齿形必须在彼此面对的部分处做得更宽。考虑到i）获得更大的扭矩，ii）减少转子角度对扭矩和力的影响，我们计算了适合旋转和悬浮的齿宽度。4.制作了第二个原型无轴承电机。悬浮试验成功。现在我们检验转子旋转时的自转和悬浮性能。 5.随着研究的深入，我们必须制作无轴承电机并检验其性能。除了这种检查之外，我们还将制作另一种类型的无轴承电机，即轴向磁化型。