Abstract

This article presents a self-powered system for supplying rotor measurement equipment and detecting stator winding inter-turn short circuit, and broken rotor bar faults in AC Machines. This system uses harvesting coils to harvest air-gap magnetic field pulsation and generate energy for powering equipment installed on the rotor. Furthermore, installing this system on the stator or rotor of AC machines provides a voltage signal appropriate for fault detection purposes. To determine specifications of the harvesting coils – coils turn numbers, and their optimal mounting positions – numerous finite element simulations have been carried out. In addition, a fault detection method has been proposed to detect broken rotor bar and inter-turn short circuit faults using induced voltage in the harvesting coils. To verify the performance of the proposed system, some experimental and simulation tests have been performed on various AC machines. The results have confirmed the applicability of this system in self-powering applications and fault detection purposes.

摘要

本文介绍了一种自供电系统，用于为转子测量设备供电并检测定子绕组匝间短路和交流电机转子断条故障。该系统使用收集线圈收集气隙磁场脉动并产生能量，为安装在转子上的设备供电。此外，将该系统安装在交流电机的定子或转子上可提供适用于故障检测目的的电压信号。为了确定收割线圈的规格——线圈匝数及其最佳安装位置——进行了大量有限元模拟。此外，还提出了一种故障检测方法，可利用收割线圈中的感应电压检测转子断条和匝间短路故障。为了验证建议系统的性能，已经在各种交流电机上进行了一些实验和模拟测试。结果证实了该系统在自供电应用和故障检测方面的适用性。