Inductive energy transfer device

Abstract

The invention discloses a device for inductive energy transfer, the device for inductive energy transfer between a stationary three-phase primary system and a moving three-phase secondary system is designed in a magnetically symmetrical form with magnetic flux paths of equal length in the three phases, and accordingly has a substantially constant power delivery. The stationary core part and the two moving core parts (3, 5) connected in series are each designed in the form of an equilateral triangle or a star spanning an equilateral triangle, with branches of equal length (3a, 3b, 3c; 5a, 5b , 5c) and support columns (3a, 3b, 3c; 5a, 5b, 5c), the branches extending at the same angle relative to each other, the support columns extending from the ends of the branches, and having primary and secondary Windings (4,6), said primary and secondary windings are arranged at equal distance from each other. The two stationary core parts (3) are connected at each support column (3a, 3b, 3c) by means of magnetic rails (2) running in parallel, and the moving core part (5) by means of Ferromagnetic running rollers ( 7 ), which are accommodated in recesses ( 8 ) of the moving support columns ( 5 a , 5 b , 5 c ), can roll on or be positioned on said magnetic rails. The simple design of the device is highly efficient in energy transfer. In the case of energy transmission, the stationary core part and the moving core part can also be positioned directly on top of each other without magnetic guide rails, only in the non-operating state.

Description

technical field [0001] The invention relates to an inductive energy transfer device in which a track comprises a three-phase primary system and an object rolling or stationary on the track comprises a three-phase secondary system which can be inductively coupled to said primary system. Background technique [0002] Devices for transferring electrical energy according to the transformer principle aim at transferring energy by means of alternating voltage. This is done by means of a magnetic circuit around which the conductors of the two different circuits are wound. If an AC voltage is applied to the primary coil of the transformer, an AC voltage will likewise be generated at the secondary coil. The ratio of the voltages is proportional to the turns ratio of the primary and secondary coils. [0003] DE 4 236 340 C2 discloses an inductive energy transmission device in which energy is transmitted contactlessly through an air gap. In this case, it is necessary to maintain a c...

AI Technical Summary

Problems solved by technology

Transformers utilizing this magnetically asymmetric type for the transfer of moving energy under load require a complex structure and supply of current to the auxiliary winding to prevent saturation of a part of the core, as a result of which the efficiency is limited due to the different positions of the moving secondary system Negative Effects

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