2002
DOI: 10.1109/tim.2002.806010
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Design and implementation of a calorimetric measurement facility for determining losses in electrical machines

Abstract: The measurement of the total losses of electrical machines is of most interest to designers for verifying their calculations. These measurements can be done in various ways, however, some lead to more accurate results than others. We will show why the conventional input-output procedure does not result in accurate loss figures. An alternate method is proposed. For this purpose a calorimetric measurement facility was designed and implemented. This paper is intended to present the calibration procedure for this … Show more

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Cited by 37 publications
(15 citation statements)
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“…Different kinds of calorimeters are constructed to determine the losses of electrical devices. These calorimeters can be divided into two basic types; open type with air as a coolant [11]- [14] and close type with water as a coolant [15]- [17]. Lately, the calorimetric systems have been mainly used to verify the losses of high-efficiency converters and a concern of electric power measurement accuracy with distorted waveforms is highlighted [18]- [21].…”
Section: Calorimetric Conceptmentioning
confidence: 99%
“…Different kinds of calorimeters are constructed to determine the losses of electrical devices. These calorimeters can be divided into two basic types; open type with air as a coolant [11]- [14] and close type with water as a coolant [15]- [17]. Lately, the calorimetric systems have been mainly used to verify the losses of high-efficiency converters and a concern of electric power measurement accuracy with distorted waveforms is highlighted [18]- [21].…”
Section: Calorimetric Conceptmentioning
confidence: 99%
“…Using a conditioning system, air can readily be cooled down to a controlled level prior to its supply to the calorimeter. This way, the machine is not operated at excessively high temperatures, as is the case in some calorimeters [16].…”
Section: A Measurement Of Fluid Propertiesmentioning
confidence: 99%
“…Using a conditioning system, air can easily be cooled down to a controlled level prior to its supply to the calorimeter. In this way, the test motor was not operated at excessively high temperature, as was the case in some previously reported designs [15].…”
Section: Previous Designsmentioning
confidence: 99%
“…However, this assumption gave rise to significant measurement errors. For example, in water-cooled calorimeters, the specific heat varies by 4%, and density varies by 5% in the working temperature range (15 • C-35 • C), whereas, for gas-cooled systems, these variations can be as much as 10%.…”
Section: B Air Energy Calculationsmentioning
confidence: 99%