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Analysis of inductive energy transmission systems with large air gap at high frequencies
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| Author(s) |
R. Mecke; C. Rathge; W. Fischer; B. Andonovski |
| Abstract |
Inductive energy transmission through a large air gap is becoming more and more attractive
especially for automatic battery charging stations and for energy supply of inductively powered
electric vehicles and other movable consumers. The paper investigates the influence of geometrical
and electrical parameters on energy transmission through air gaps of several hundred millimetres. The
investigations are carried out by means of magnetic flux simulation and measurements. In particular
the dimensions of the primary and secondary system, the existence of ferrite cores on the primary or
secondary side and the air gap length determine the transmission behaviour. The transferable electric
power and the efficiency of magnetic assemblies with large air gaps can be considerably improved by
using higher transmission frequencies in the range of approximately 100 kHz. An experimental
arrangement transfers an electric power of 1 kW through an air gap of 300 mm. At a 100 kHz
transmission frequency the overall efficiency, including all power electronic components, is greater
than 80 %. |
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| Filename: | EPE2003-PP0087 - Mecke |
| Filesize: | 442.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-14 by Unknown |
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