A4 Conference proceedings

Measurement Accuracy Requirements for the Efficiency Classification of Converters and Motors

Open Access publication

Publication Details
Authors: Aarniovuori Lassi, Kärkkäinen Hannu, Niemelä Markku, Pyrhönen Juha
Publication year: 2019
Language: English
Related Journal or Series Information: European Conference On Power Electronics And Applications
Title of parent publication: 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Journal acronym: EPE-ECCE Europe
ISBN: 978-1-7281-2361-5
eISBN: 978-9-0758-1531-3
ISSN: 2325-0313
JUFO-Level of this publication: 1
Open Access: Open Access publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe202001273592


Electrical machines play a major role in the electrical energy consumption in the modern world; therefore, the efficiency of electrical machines has been regulated for a long time by different authorities. Recently, the international efficiency classes for converters and converter-fed machine packages were introduced by IEC. The increased efficiency of the devices creates a challenge for accurate loss and efficiency determination of these devices. This paper examines the measurement accuracy of the direct-on-line and converter-fed electrical machines, frequency converters, and converter-fed machine packages from a theoretical basis. The measurement uncertainty is presented as a function of the rated powers of the devices and as a function of the efficiency classes.

Last updated on 2020-20-03 at 10:03