Abstract
The paper explains how the use of calorimetric techniques can lead to a dramatic increase in the accuracy of measurement of both total and stray load losses in induction motors. Analysis of the errors involved in determining stray load loss from total and component losses is. The need for a separate generated supply is explained. An explanation of the calorimetric technique is given together with details of a particular design. Accuracy is ±5.6 W on the 3.2 kW range. The repeatability of the loading system, and calorimeter was developed to be ±8W when testing 7.5 kW motors. A comparison is presented for a 30 kW motor of carefully obtained C390 results and Calorimeter results for stray load loss.
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References
IEEE Standard 112-1991
Canadian Standard C390 M1985
IEC16972 (Draft)
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P D Malliband, MPhil Thesis, Cambridge University, 1998
P MacLeod, K J Bradley, A Ferrah, R Magill, J C Clare, P Wheeler, P Sewell,‘High Precision Calorimetery for the Measurement of the Efficiency of Induction Motors’, IAS 98, St Louis.
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© 2000 Springer-Verlag Berlin ⋅ Heidelberg
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Bradley, K.J. et al. (2000). Precision Calorimetry for Stray Load Loss Determination. In: Bertoldi, P., de Almeida, A.T., Falkner, H. (eds) Energy Efficiency Improvements in Electronic Motors and Drives. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-59785-5_33
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DOI: https://doi.org/10.1007/978-3-642-59785-5_33
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-67489-4
Online ISBN: 978-3-642-59785-5
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