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Study on the Generating Mechanism of a Parametric Oscillation in the Laminated Core Parametric Motor

叠片铁心参量电机参量振荡产生机理的研究

基本信息

批准号：
10650290
负责人：
SAKAMOTO Yoshinori
金额：
$ 1.92万
依托单位：
Hachinohe Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

Since 1979, the authors have been engaged in the development and research of practical applications for an orthogonal core parametric motor that offers numerous attractive features not found in conventional motors. In 1995, the authors succeeded in manufacturing a laminated core parametric motor that can be mass-produced using conventional production facilities. This motor is comparable to conventional single-phase induction motors with respect to both output and efficiency.However, at low speeds, a parametric oscillation has become unstable in some cases and the torque has dropped to zero. This is a serious problem for the practical use of the motor.In this research, the author has studied the generating mechanism of a parametric oscillation in order to find the method of stabilizing the parametric oscillation and solve the problems noted at low speeds.The following results were obtained :(1) Forming the stator of a laminated core parametric motor in an asymmetric shape is highly effective in stabilizing the parametric oscillation and in improving the motor characteristics like output and efficiency.(2) The asymmetry of the inner ring of a stator influences on the characteristics of the motor such as output and efficiency. The asymmetry of the outer ring of the stator influences on the stability of the parametric oscillation.(3) When the angle between adjacent magnetic poles is shifted by 10 to 15 degrees from the basic angle 90 degrees, the parametric oscillation is stabilized, the "normal-reverse rotation" region disappears, and the output and efficiency of the motor are largely improved.(4) The qualitative analysis of the motor was carried out based on the nonlinear differential equation obtained from the magnetic circuit model of the motor. The main reason of stabilization of the parametric oscillation is that a portion of the primary flux flows into the secondary magnetic circuit.

自1979年以来，作者一直从事开发和研究的正交芯参数电机的实际应用，提供了许多有吸引力的功能，没有发现在传统的电机。1995年，作者成功地制造了一个叠片铁芯参数电机，可以使用传统的生产设备进行大规模生产。这种电机在输出和效率方面与传统的单相感应电机相当。但是，在低速时，参数振荡在某些情况下变得不稳定，转矩下降到零。本研究中，为了找到稳定参数振荡的方法，解决低速时的问题，对参数振荡的产生机理进行了研究，得到了以下结果：（1）将叠片铁心参数电机的定子做成非对称形状，对稳定参数振荡，提高输出和效率等电机特性是非常有效的。(2)定子内圈的不对称性影响电机的输出和效率等特性。定子外环的非对称性影响参数振荡的稳定性。(3)当相邻磁极之间的角度从基本角度90度偏移10至15度时，参数振荡稳定，“正转-反转”区域消失，电机的输出和效率大大提高。(4)从电机磁路模型出发，建立了电机的非线性微分方程，对电机进行了定性分析。参数振荡稳定的主要原因是初级磁通的一部分流入次级磁路。