Abstract

In this paper, the results of experimental studies of longitudinal edge effect (LEE) compensation in induction machines with an open magnetic circuit (IMOMC) are presented. The LEE compensation is provided by using additional compensating elements (coils) of the inductor winding inserted into the grooves of the inductor core at the input and output ends in the direction of motion of a nonmagnetic conductive working body. The studies were carried out at an experimental facility with a working body in the form of a rotating disk mounted on the shaft of a direct current machine (DCM) connected with another DCM as a “generator–motor” system, which made it possible to carry out the studies using both stable and unstable branches of the IMOMC characteristics. The technique of processing experimental data with a correct account of mechanical loss of the experimental facility is presented. All possible options of connecting the compensating coils at the inductor input and output with the main phase windings of the inductor are investigated, including their operation both at the inductor input and output simultaneously and only at the inductor input or output. It is found that the greatest improvement of the IMOMC traction and energy characteristics is provided when the compensating elements are connected to the inductor input.

中文翻译：

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开路电磁感应器的纵向边缘效应补偿

摘要

在本文中，给出了具有开式磁路（IMOMC）的感应电机中纵向边缘效应（LEE）补偿的实验研究结果。通过使用电感线圈的附加补偿元件（线圈）在非磁性导电工作体的运动方向上插入到输入和输出端的电感器铁心的凹槽中，可以提供LEE补偿。该研究是在一个实验机构中进行的，该实验机构采用旋转盘形式的工作体，该工作盘安装在直流电机（DCM）的轴上，该电机与另一个DCM作为“发电机-电动机”系统相连，从而有可能使用IMOMC特性的稳定分支和不稳定分支进行研究。提出了一种处理实验数据并正确考虑实验设备机械损耗的技术。研究了将电感器输入和输出处的补偿线圈与电感器主相绕组连接的所有可能选择，包括它们同时在电感器输入和输出处以及仅在电感器输入或输出处的操作。可以发现，当补偿元件连接到电感输入端时，IMOMC牵引力和能量特性得到了最大的改善。包括它们同时在电感器输入和输出处以及仅在电感器输入或输出处的操作。可以发现，当补偿元件连接到电感输入端时，IMOMC牵引力和能量特性得到了最大的改善。包括它们同时在电感器输入和输出处以及仅在电感器输入或输出处的操作。可以发现，当补偿元件连接到电感输入端时，IMOMC牵引力和能量特性得到了最大的改善。