Open AccessCalorimetric concept for measurement of power losses up to 2 kW in electric drives
Author(s) -
Kosonen Antti,
Aarniovuori Lassi,
Pyrhönen Juha,
Niemelä Markku,
Backman Jari
Publication year - 2013
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2012.0109
Subject(s) - converters , calorimeter (particle physics) , power (physics) , electric power , electric motor , power electronics , electrical engineering , measurement uncertainty , computer science , power module , automotive engineering , electronic engineering , engineering , voltage , physics , quantum mechanics , detector
Accurate measurement of power losses in high‐efficiency devices is difficult. Measurement standards for industrial converters and complete electric drives, including both motors and converters, will come into effect soon, and measurement methods for these devices should be included. In the calorimetric method, the power losses are measured directly. However, the calorimeters presented previously are mainly tailored systems, and therefore, they typically have very complicated constructions. Hence, their applicability to the evaluation of general electric drives is limited. A functional calorimetric measurement concept is suggested in this study for power losses up to 2 kW. Such a power loss can be applied with present‐day power electronic converters up to 110 kW. The construction of the concept is simple and lightweight. It does not require a complex structure or a large area in the measurement site. The concept is scalable and duplicable for different sizes. Different devices with different cablings can be measured without any problems. The combined standard heat loss measurement uncertainty for the calorimeter is ±0.4%.