NDLI: Loss Definition of Electric Drives by a Calorimetric System With Data Processing

Content Provider	IEEE Xplore Digital Library
Author	Kosonen, A. Aarniovuori, L. Ahola, J. Backman, J. Pyrhonen, J. Niemela, M.
Copyright Year	1982
Abstract	An accurate measurement of power or heat losses of high-efficiency electrical devices is difficult with input and output powers. In the calorimetric method, these losses are measured directly. In this paper, a functional heat loss measurement concept with adequate data processing methods is suggested for heat losses up to 2 kW. Such a heat loss range can be applied to present-day power electronic converters with the rated power of up to 110 kW and motors up to 37 kW. The measurement system does not require a complex mechanical structure or a large footprint area on the measurement site. The concept is scalable to different sizes. New features to the balance type calorimeter data processing are introduced. These include a mass flow correction, a technique to detect the thermal equilibrium, and a method to correct measured heat losses to improve the measurement repeatability and reduce the measurement uncertainty. The measurement uncertainty of the proposed calorimetric concept is 0.4%. Laboratory measurements are carried out both for a commercial frequency converter and an electric motor. These are measured at the same time with two calorimeters. The losses of these devices are measured both by the input-output and calorimetric methods.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	4432
Ending Page	4442
Page Count	11
File Size	1549120
File Format	PDF
ISSN	02780046
Volume Number	61
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Loss measurement Temperature measurement Heating Induction motors Measurement uncertainty Temperature sensors Velocity control voltage-source converter Calorimetry converters efficiency electric drive induction motors loss measurement motors power loss temperature measurement uncertainty variable-speed drives
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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