|
|
Návrh a analýza magnetického ložiska
Kyanka, Radim ; Ctibor, Jiří (oponent) ; Rúra, Dávid (vedoucí práce)
Diplomová práce je zaměřena na literární rešerši a popis magnetických ložisek za účelem návrhu standu pro demonstraci magnetické levitace. Simulovaný model je vytvořen za pomocí metody konečných prvků. Dále se zabývá výhodami a nevýhodami spolu s porovnáním s klasickými ložisky v pohonech. Je zde diskutován analytický návrh, jež je zjednodušený a zanedbává několik parazitních jevů. Tyto analýzy jsou následně diskutovány. Hlavní část návrhu a postupu výpočtů je pro 8-pólové heteropolární radiální aktivní magnetické ložisko. Výsledek návrhu je následně uplatněn na realizaci demonstrátoru.
|
|
|
Design of a Magnetic Bearing for an Electrical Machine
Rúra, Dávid ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
The current development in the field of electric machinery is focusing on high-speed electric machines. This opens also other fields related to high-speed machines. One of them are magnetic bearing systems. Tradition approach of using ball bearing brings a few problems in design dealing with friction at high speeds. Together with magnetic bearings, development is their control. Faster chips opened a new way of thinking of control and helped to evolve robust control loops. The biggest advantage of magnetic bearing is non-friction run and almost no maintenance. Compare to traditional ball bearing, a magnetic bearing system needs more space and in some applications could happen that the shaft will be twice as long. This problem can be solved designing complex system with motor and integrated magnetic bearing what leads to downsizing. In this master thesis, the design of magnetic bearing for 12kw, 45000rpm is discussed. It focuses on practical design and correlations between parameter selection. The analytical approach is used to sketch the design and optimization is done afterwards. Problem with an analytical design is that it doesn't cover all parasitic phenomenae and thus numerical modelling snd optimization are demanded. Also, the critical speed analyze is included in this thesis. The results of the work will be used for manufacturing prototype as an extension to the existing high-speed machine.
|
|
| |
|
|
Investigation on operating characteristics of multi-phase machine
Kuna, Kristián ; Mach, Martin (oponent) ; Bárta, Jan (vedoucí práce)
In recent decades, the electrical industry has been rapidly developed. The development is in electrical vehicles, navigation, electrical aircraft, high-power wind generators, multi-phase electrical machines and drivers. With development in the automotive industry and airspace industry, the need of high-reliability electrical machines. This fact results in the development of poly-phase machines. These machines try to achieve a higher reliability with the same or higher power rating.
|
|
|
Investigation on operating characteristics of multi-phase machine
Kuna, Kristián ; Mach, Martin (oponent) ; Bárta, Jan (vedoucí práce)
In recent decades, the electrical industry has been rapidly developed. The development is in electrical vehicles, navigation, electrical aircraft, high-power wind generators, multi-phase electrical machines and drivers. With development in the automotive industry and airspace industry, the need of high-reliability electrical machines. This fact results in the development of poly-phase machines. These machines try to achieve a higher reliability with the same or higher power rating.
|
|
|
Design of a Magnetic Bearing for an Electrical Machine
Rúra, Dávid ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
The current development in the field of electric machinery is focusing on high-speed electric machines. This opens also other fields related to high-speed machines. One of them are magnetic bearing systems. Tradition approach of using ball bearing brings a few problems in design dealing with friction at high speeds. Together with magnetic bearings, development is their control. Faster chips opened a new way of thinking of control and helped to evolve robust control loops. The biggest advantage of magnetic bearing is non-friction run and almost no maintenance. Compare to traditional ball bearing, a magnetic bearing system needs more space and in some applications could happen that the shaft will be twice as long. This problem can be solved designing complex system with motor and integrated magnetic bearing what leads to downsizing. In this master thesis, the design of magnetic bearing for 12kw, 45000rpm is discussed. It focuses on practical design and correlations between parameter selection. The analytical approach is used to sketch the design and optimization is done afterwards. Problem with an analytical design is that it doesn't cover all parasitic phenomenae and thus numerical modelling snd optimization are demanded. Also, the critical speed analyze is included in this thesis. The results of the work will be used for manufacturing prototype as an extension to the existing high-speed machine.
|
|
| |
host ::
RSS.