Electrical transmission or interconnection systems – Electromagnet or highly inductive systems
Patent
1996-02-15
1998-09-08
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Electromagnet or highly inductive systems
363 16, 336 75, 174117R, H02M 100
Patent
active
058048928
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for contact-free transmission of electrical energy from one or more power supplies to one or more consumers.
For transmitting electrical energy between machine tools or handling devices that are linearly moved relative to one another, trailing cables or slip tracks with slip contacts are used. Due to the trailing cables that have to be entrained, proper operation is often impaired. The current-carrying slip tracks must be, in order to prevent accidents by contacting, covered in a reliable manner, so that this type of energy transmission is often not feasible, especially not over longer distances, at higher velocities and/or in wet environments.
The object of the invention is thus to provide a device for contact-free transmission of electrical energy from one or more power supplies to one or more consumers which is not only extremely reliable and fail-safe, but with which it is especially possible to transmit electrical energy of high power output over long distances, at high driving velocities, as well as under water with extremely minimal losses and to supply even movable consumers with energy at any desired location. The required constructive expenditure should be minimal so that an economical manufacture is possible; furthermore, the device should be fail-safe, easily adaptable to various conditions, and usable in many applications.
SUMMARY OF THE INVENTION
According to the invention this is achieved by electrically coupling at least two transformers, provided preferably with current converting devices embodied according to resonance technology, with an electrical conductor in the form of a closed endless loop in a contact-free manner. At least one of the transformers is a feed transformer for feeding electrical energy into the electrical conductor and at least one transformer is embodied as a take-up transformer for receiving electrical energy.
The transformers should be comprised of ferromagnetic material and should have a EE, EI, UU or double ring shape.
Furthermore, it is suggested to make the electrical conductor mechanically rigid or to manufacture it from a litz wire. According to other embodiments, the conductor can also be a flat, solid, or hollow profiled member, may be comprised of two or more nested electrically conducting profiled members, be a U, T, or double T profiled member or a star-shaped profiled member. However, it is also possible to form the electrical conductor by one or more electrically conducting wires which are arranged within a rigid carrier.
Furthermore, the electrical conductor should be surrounded by an insulation layer; the electrical line can also be completely or partly surrounded by an electrically conducting sleeve in the form of an open, preferably grounded loop arranged exterior to the insulation layer.
It is furthermore very advantageous when one or more transformers coordinated with the electrical conductor can be moved in the longitudinal direction of the electrical conductor, for example, with a carriage. In this manner, it is possible to simultaneously supply a plurality of consumers with electrical energy, possibly at different locations.
When an electrical conductor extends over a greater distance, the conductor should preferably be mechanically supported.
This can be achieved such that supports are provided from which the conductor is suspended via insulation members. However, it is also possible to arrange, preferably in the area of the movable transformers, to provide support and/or guide rollers which are movable therewith. Furthermore, the conductor can be suspended over its entire length or a portion thereof with an insulating support foil and springs connected thereto.
For electrically coupling an electrical conductor which is divided into individual sections, it is expedient to arrange at the ends of the respectively associated sections of the conductor copper strips spaced from one another, which are connected via current leads with the adjacent section or with the other end of the sa
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Finke, Miniature laminated cores of improved premeability for low frequency tranformers & reactors, Weson Technical papers, Aug. 20, 1968.
Nagel Andreas
Schwan Ulrich
Ganjian Peter
Schwan Ulrich
Shoop Jr. William M.
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