Li, Xing ; An, Jeongki ; Erd, Nicolas ; Dietz, Daniel ; Gemeinder, Yves ; Binder, Andreas (2020)
Design and Manufacture of a High-speed Rotor in a Flywheel Demonstrator.
23rd International Conference on Electrical Machines and Systems. Hamamatsu, Japan (24.-27.11.2020)
doi: 10.23919/ICEMS50442.2020.9290905
Conference or Workshop Item
Abstract
A high-speed flywheel demonstrator with 28 kW rated power was designed and built. The rotor is made of steel, which contains 0.5 kWh energy capacity at the maximum revolution speed of 24 000 min -1 . This paper presents the mechanical issues regarding the design and manufacturing of this steel rotor. During the hardening process, an unpredicted damage occurred in the rotor due to overloaded thermal stress. The analysis of this damage and the solution are presented. After assembling the rotor components of the drive machine and the magnetic bearings, the rotor was tested at 120 % overspeed. The designed rotor passed the test successfully up to the speed of 28 800 min -1 for 2 minutes according to standard IEC 60034-1. After assembled in the complete system, the rotor was also successfully driven up to the maximum operating speed of 24 000 min -1 , suspended by magnetic bearings.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 2020 |
| Creators: | Li, Xing ; An, Jeongki ; Erd, Nicolas ; Dietz, Daniel ; Gemeinder, Yves ; Binder, Andreas |
| Type of entry: | Bibliographie |
| Title: | Design and Manufacture of a High-speed Rotor in a Flywheel Demonstrator |
| Language: | English |
| Date: | 22 December 2020 |
| Publisher: | IEEE |
| Book Title: | The 23rd International Conference on Electrical Machines and Systems : ICEMS2020 web remote conference |
| Event Title: | 23rd International Conference on Electrical Machines and Systems |
| Event Location: | Hamamatsu, Japan |
| Event Dates: | 24.-27.11.2020 |
| DOI: | 10.23919/ICEMS50442.2020.9290905 |
| Abstract: | A high-speed flywheel demonstrator with 28 kW rated power was designed and built. The rotor is made of steel, which contains 0.5 kWh energy capacity at the maximum revolution speed of 24 000 min -1 . This paper presents the mechanical issues regarding the design and manufacturing of this steel rotor. During the hardening process, an unpredicted damage occurred in the rotor due to overloaded thermal stress. The analysis of this damage and the solution are presented. After assembling the rotor components of the drive machine and the magnetic bearings, the rotor was tested at 120 % overspeed. The designed rotor passed the test successfully up to the speed of 28 800 min -1 for 2 minutes according to standard IEC 60034-1. After assembled in the complete system, the rotor was also successfully driven up to the maximum operating speed of 24 000 min -1 , suspended by magnetic bearings. |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Electrical Energy Conversion > Electrical Energy Conversion 18 Department of Electrical Engineering and Information Technology > Institute for Electrical Energy Conversion |
| Date Deposited: | 07 Nov 2022 12:03 |
| Last Modified: | 14 Mar 2023 13:22 |
| PPN: | 505876957 |
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