Profile
The tasks of working group “Explosion Protected Electrical Drive Systems“ comprise testing and assessment of electrical drives and complete drive systems as well as protection equipment required for safe operation of explosion protected electrical machines (ATEX and IECEx) including research relating to this range of topics.
Here, another aspect is the thermal evaluation of enclosures with built-in components such as control units used in potentially explosive atmospheres.
Another important focus is put on new research topics concerning all aspects of electrical drive technology performed in cooperation with universities and companies.
Furthermore, technical guidance for users of explosion protected drives is another element in the range of tasks of this working group. For detailled information concerning our range of tasks please refer to the respective websites.
Research/Development
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Aktuelle Forschungsvorhaben
- Ignitability of partial discharges on high voltage windings
F. Lienesch, U. Dreger, M. Hilbert - Efficiency determination on electrical machines
C. Lehrmann, U. Dreger, F. Lienesch - Frequency converter supplied drives designed to “Increased Safety“ type of protection
C. Lehrmann - Advance calculation of the heating of electrical machines in locked state using the
finite-element method
U. Dreger - Permanent-magnet synchronous machines with regard to explosion protection
C. Lehrmann, N, Yogal - Characterization of magnet materials for the application in permanent-magnet
synchronous machines
N. Yogal - Cooperation in the EMPIR-Projekt
19ENG08 WindEFCY "Traceable mechanical and electrical power measurement for efficiency determination of wind turbines"
C. Lehrmann, N. Yogal
Services
Service
- Examination of electrical drives according to ATEX-Directive 2014/34/EU or within the scope of the IECEx-scheme
- Examination of monitoring equipment according to Directive 2014/34/EU
- Manufacturer auditing (QM-audit) according to ATEX-Directive 2014/34/EU
- Technical guidance for manufacturers and users of explosion protected products
Information
Current publications
Publication single view
Unknown
| Title: | Determination of the Measurement Uncertainty of Direct and Indirect Efficiency Measurement Methods in Permanent Magnet Synchronous Machines |
|---|---|
| Author(s): | N. Yogal, C. Lehrmann and M. Henke |
| Journal: | International Conference on Electrical Machines (ICEM) |
| Year: | 2018 |
| Month: | September |
| Volume: | 13 |
| IEEE | |
| Event name: | XIII International Conference on Electrical Machines (ICEM) |
| Alexandroupoli, Greece | |
| Event date: | 03.09. - 06.09.2018 |
| DOI: | 10.1109/ICELMACH.2018.8506857 |
| ISBN: | 978-1-5386-2477-7 |
| Abstract: | The use of permanent magnet synchronous machines to achieve high performance and high efficiency in the modern motor and generator industries has increased rapidly in recent years. The existing efficiency determining methods and standards do not however consider measurement uncertainties during loss and efficiency calculations of such machines. In this paper, the determination of the efficiency of permanent magnet synchronous machines using direct and indirect methods is presented and the measurement uncertainty is determined using the software called GUM Workbench "Guide to the Expression of Uncertainty in Measurement" while assessing the results of efficiency measurements. |