公开(公告)号：US4868479A

公开(公告)日：1989-09-19

申请号：US81540

申请日：1987-08-04

申请人： Ahn Byong-Ho ,  Donald E. Fulton ,  Philip J. Gilinson, Jr. ,  David C. Whipple ,  William P. Curtiss

发明人： Ahn Byong-Ho ,  Donald E. Fulton ,  Philip J. Gilinson, Jr. ,  David C. Whipple ,  William P. Curtiss

IPC分类号： G01C19/08 ,  H02K29/12 ,  H02P25/02

CPC分类号： G01C19/08 ,  H02K29/12 ,  H02P25/024

摘要： A back EMF controlled, synchronous, permanent magnet motor capable of extremely high rotation speeds at high efficiency. The motor includes a permanent magnet flux source and excitation coils for producing a rotating magnetic field mounted on an iron free form to substantially eliminate core loss and resulting rotor drag. Back EMF is determined directly from the excitation and controls the excitation to produce a torque angle of substantially 90.degree. between the magnet and coil fluxes. Coil excitation is used at maximum efficiency and hunting is avoided. The permanent magnet provides a high flux density that also allows a low current in the motor coils and thus reduces coil copper losses to further improve efficiency.

摘要翻译： 一种反电动势控制的同步永磁电动机，能够以高效率实现极高的转速。 电动机包括用于产生安装在无铁形式上的旋转磁场的永磁通量源和励磁线圈，以基本上消除铁损和产生的转子阻力。 反向EMF直接由励磁确定，并控制励磁，从而在磁体和线圈通量之间产生大致90°的转矩角。 以最大效率使用线圈激励，避免了狩猎。 永磁体提供高磁通密度，其也允许电动机线圈中的低电流，从而减少线圈铜损耗以进一步提高效率。

公开(公告)号：US4084428A

公开(公告)日：1978-04-18

申请号：US796151

申请日：1977-05-12

申请人： Byong-Ho Ahn ,  Philip J. Gilinson, Jr. ,  Anthony Michael Moscaritolo

发明人： Byong-Ho Ahn ,  Philip J. Gilinson, Jr. ,  Anthony Michael Moscaritolo

IPC分类号： G01R31/34 ,  G01M15/00

CPC分类号： G01R31/343

摘要： A torque reaction test system for evaluating the performance characteristics of a test motor by detecting its inertial reaction torque to acceleration and deceleration of the rotor. In one embodiment a test motor, typically at a final assembly stage and contained within a housing where it is inaccessible, is mounted in a rotatable fixture and the torque reaction of the test motor when accelerated and decelerated is obtained. The torque reaction is plotted against time or speed. A torque balance loop provides a feedback current which maintains the test motor housing within the fixture at a predetermined point of rotation and which provides an indication of torque reaction. A further embodiment provides a dynamometer in which a test motor is driven by a drive motor for a rapid run-up time and the torque response characteristics are plotted as a function of time or speed to provide nondestructive determination of system parameters.

摘要翻译： 一种用于通过检测其对转子的加速和减速的惯性反作用转矩来评估测试电动机的性能特性的扭矩反作用测试系统。 在一个实施例中，通常在最终组装阶段并且容纳在不可接近的壳体内的测试电机被安装在可旋转的固定装置中，并且获得加速和减速时的测试电动机的扭矩反作用力。 扭矩反应相对于时间或速度作图。 扭矩平衡回路提供反馈电流，其将测试电机壳体保持在固定装置内的预定转动点处，并提供扭矩反应的指示。 另一实施例提供了一种测力计，其中测试电机由驱动电机驱动以用于快速起动时间，并且扭矩响应特性被绘制为时间或速度的函数，以提供系统参数的非破坏性确定。