AN AUTOMATED CALORIMETRIC METHOD OF LOSS MEASUREMENT IN ELECTRICAL MACHINES

被引：21

作者：

BAHOLO, B

MELLOR, PH

HOWE, D

BIRCH, TS

机构：

[1] Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, S1 4DU, Mappin Street

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 133卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(94)90587-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Traditionally the losses dissipated in an electrical machine have been determined from the difference between the measured input and output powers. However, the achievable accuracy is limited by the uncertainty of measurement errors, particularly if the machine is supplied with distorted voltage and current waveforms. Therefore, a more appropriate approach is to employ a calorimetric method in which the losses are determined by direct measurement of the dissipated heat. This paper describes the control and instrumentation of such an automated calorimetric system which has been commissioned to accommodate machines of up to 75 kW rating, and in which losses can be measured to an accuracy better than 10 W.

引用

页码：433 / 436

页数：4