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Explosion-protected electrical Drive Systems

Working Group 3.63


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.

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Aktuelle Forschungsvorhaben

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Current publications

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Magnetic loss measurement of surface-mounted permanent magnet synchronous machines used in explosive environments

Author(s): N. Yogal, C. Lehrmann and M. Henke
Journal: The Journal of Engineering
Year: 2019
Month: June
Day: 17
Volume: 2019
Number 2: 6
Pages: 3760 - 3765
Publisher: IET
DOI: 10.1049/joe.2018.8224
ISSN: 2051-3305
Abstract: High energy-efficient permanent magnet synchronous machines (PMSMs) with low manufacturing costs and easy controllability are in high demand for the automotive and aerospace industries and in explosive environments (hazardous areas) like mines and the petrochemical industries. In explosive environments, the high surface temperature of PMSMs, due to magnetic losses and the irreversible demagnetisation of permanent magnets (PMs), could be a source of ignition leading to explosions. Therefore, this paper presents magnetic losses of a PMSM, which will help engineers to design robust machines with a high tolerance to explosive environments. Analytical calculations and finite element method (FEM) simulations of the magnetic losses of a PMSM are presented and compared with measured values from testing a PMSM.

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