A method of measuring loss distribution in electrical machines
A method of measuring loss distribution in electrical machines
复制标题
一种测量电机损耗分布的方法
DOI：
10.1049/pi-a.1961.0050
复制
发表时间：
1961
期刊：
影响因子：
--
通讯作者：
A. Gilbert
中科院分区：
文献类型：
--
作者：
A. Gilbert
本文讨论了需要新的测量技术的调查和评估机器的行为。本文分析了以往铁损测量方法的缺点，提出了一种改进的热法，它是基于任一点的初始温升率与该点产生的铁损成正比的原理。理论上表明，为了达到足够的精度，必须在短时间内进行测量，而这一要求是通过使用斩波型直流放大器和记录器来测量电动势来满足的。在热电偶中产生。介绍了测量设备，分析了杂散交流的影响。pickup已经讨论过了。给出了应用实例，表明不仅可以测量铁损分布，而且可以通过在单个生产机器上的测试来研究几何形状或材料变化的影响。
The paper discusses the need for new measurement techniques for the investigation and evaluation of machine behaviour. The disadvantages of former methods of core-loss measurement are dealt with, and an improved thermal method is described, based on the principle that the initial rate of rise of temperature at any point is proportional to the loss generated at that point. It is shown theoretically that, to achieve sufficient accuracy, measurements must be made over a short period of time, and this requirement is met by the use of a chopper-type d.c. amplifier and recorder to measure the e.m.f. generated in thermocouples. The measuring equipment is described and the effects of stray a.c. pick-up are discussed. Examples of applications are given which show that not only can the core-loss distribution be measured but also the effects of changes of geometry or materials can be studied by tests on a single production machine.