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Eine Übersicht über die bisherigen, im Volltext verfügbaren, Veröffentlichungen der Arbeitsgruppe Explosionsgeschützte elektrische Antriebssysteme:

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Measurement of eddy current loss in permanent magnets with high-frequency effects of electrical machines for hazardous locations

Author(s): N. Yogal, C. Lehrmann and M. Henke
Journal: International Conference on Electrical Machines and Systems (ICEMS)
Year: 2019
Month: December
Day: 5
Volume: 22
Publisher: IEEE
Conference name: 22nd International Conference on Electrical Machines and Systems (ICEMS)
Conference place: Harbin, China
Conference date: 11.-14.08.2019
DOI: 10.1109/ICEMS.2019.8921966
ISSN: 978-1-7281-3398-0
Abstract: The use of permanent magnets (PMs) in the modern motor and generator industry to achieve high performance and high efficiency has increased rapidly. Due to high eddy current loss, the high temperatures that permanent magnets (PMs) can reach increase the chances that thermal demagnetization will take place, resulting in a completely irreversible loss of magnetic properties. To measure the eddy current loss in PMs in the presence of an external magnetic field, which is similar to operating a permanent magnet synchronous machine (PMSM), a closed-loop magnetic measurement system is designed, developed and manufactured. With this symmetrical closed magnetic measurement system, the loss of the PM is measured with varying frequency. Different shapes and sizes of PMs used in the PMSM in this measurement setup are evaluated. The most promising improvements in magnetic loss measurement are analyzed and investigated.

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