Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Oliver Drubel"'
Autor:
Nicola Bianchi, Antonino Di Gerlando, James Borg Bartolo, Oliver Drubel, Avoki M. Omekanda, Emmanuel Agamloh, Ayman El-Refaie, Mircea Popescu, Aldo Boglietti
Publikováno v:
IEEE Industrial Electronics Magazine. 8:18-30
Electrical machines are generating and using most of the electrical energy converted worldwide from fossil fuels or renewable sources. An optimized electrical machine means not only less input energy used but also higher electromechanical energy avai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dc3ac8c5365b0342fc68501dd4e72cc
https://doi.org/10.1109/mie.2013.2294077
https://doi.org/10.1109/mie.2013.2294077
Publikováno v:
Electrical Engineering. 90:55-63
The current flow within a salient pole brushless exciter with polygon-connected winding is calculated. The winding is connected to a rectifier, which causes transients in the winding during switching. Brushless exciters are over-dimensioned for their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b53ec951aeaee6dc4857228ed2186e0a
https://doi.org/10.1007/s00202-006-0053-z
https://doi.org/10.1007/s00202-006-0053-z
Autor:
Max Hobelsberger, Oliver Drubel
Publikováno v:
Electrical Engineering. 89:29-40
The operation of large electrical machines like turbo-generators with ratings of several hundred MVAs by static frequency converters can cause shaft voltages of several hundred volts. The shaft voltages consist of peaks with a time constant of some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d61e58cee630a093c9269e9b6ab71833
https://doi.org/10.1007/s00202-005-0324-0
https://doi.org/10.1007/s00202-005-0324-0
Autor:
Oliver Drubel
Converter driven applications are applied in more and more processes. Almost any installed wind-farm, ship drives, steel mills, several boiler feed water pumps, extruder and many other applications operate much more efficient and economic in case of
Autor:
Oliver Drubel
Publikováno v:
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering. 22:1166-1181
The current distribution within multi strand windings is investigated for transient current and voltage supplies. The difference in losses between transient and sinusoidal waveforms is elaborated. Therefore, a wide range of frequencies as well as dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33123a442c4dd88e6623d30c3cd741e9
https://doi.org/10.1108/03321640310483084
https://doi.org/10.1108/03321640310483084
Autor:
Oliver Drubel
Publikováno v:
Converter Applications and their Influence on Large Electrical Machines ISBN: 9783642362811
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f42e198c8fb0498e69f0e85eda4a308
https://doi.org/10.1007/978-3-642-36282-8_10
https://doi.org/10.1007/978-3-642-36282-8_10
Autor:
Oliver Drubel
Publikováno v:
Converter Applications and their Influence on Large Electrical Machines ISBN: 9783642362811
The repetitive switching of power electronic elements within frequency converters causes voltage peaks, which are beyond the sinusoidal voltage maximum of the fundamental. This may lead to increased electrical stress of the winding insulation. In ord
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2507ab8c00627eaa8d2df9fd066e0ac
https://doi.org/10.1007/978-3-642-36282-8_8
https://doi.org/10.1007/978-3-642-36282-8_8
Autor:
Oliver Drubel
Publikováno v:
Converter Applications and their Influence on Large Electrical Machines ISBN: 9783642362811
Converter driven electrical machines are mainly used for pumps and compressor loads or applications with special overload requirements and control quality. Converter driven machines for pumps can be found for instance in several electrical steam or c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6ea6db038d376f7250489432a3fa1e3
https://doi.org/10.1007/978-3-642-36282-8_9
https://doi.org/10.1007/978-3-642-36282-8_9
Autor:
Oliver Drubel
Publikováno v:
Converter Applications and their Influence on Large Electrical Machines ISBN: 9783642362811
Different basis quantities of asynchronous machines need to be calculated within a drive application. The machine current, stalling torque, losses and temperatures do belong to these quantities. Converters are in principle capable to create a relativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82ca1f5afb99632a121cb26f66aaa9f5
https://doi.org/10.1007/978-3-642-36282-8_3
https://doi.org/10.1007/978-3-642-36282-8_3
Autor:
Oliver Drubel
Publikováno v:
Converter Applications and their Influence on Large Electrical Machines ISBN: 9783642362811
Current sheets of the same space harmonics, which impose flux-density components of different phase velocities in the air-gap, cause oscillations in the electrical torque. These may damage the shaft or coupling. The difference in phase velocity cause
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20e5955623fde4dd42eaae2242978fda
https://doi.org/10.1007/978-3-642-36282-8_5
https://doi.org/10.1007/978-3-642-36282-8_5