Inductive power pick-up coils

Details Inductive power pick-up coils Inductive power pick-up coils

1994-10-21

1996-06-18

Ro, Bentsu

Electricity: motive power systems

Supplied or controlled by space-transmitted electromagnetic...

191 6, 191 10, 191 14, 336178, H01F 3814, B60L 900

Patent

active

055281133

ABSTRACT:
A loosely coupled inductive power transfer system suitable for transferring power to a mobile conveyer platform or a vehicle has pick-up coils wound on flux concentrator(s). One or more large flat horizontal ferrite cores 607, 608 are used to concentrate the horizontal component of magnetic flux from an extended volume into one or more secondary or pick-up coils 613. Each shock-resistant core comprises an array of many individual strips of ferrite held in close contact. One, more usually two, or perhaps more resonant pick-up windings are wound about each core and each winding has a shorting switch (within 602, 603 . . . ) placed across it. A controller 601 connects a controlled output voltage on to an output bus 605, 606 from the best-placed pick-up winding on any one core at any moment, while holding the others in a shorted hence inactive state.

REFERENCES:
patent: 4331225 (1982-05-01), Bolger
patent: 4836344 (1989-06-01), Bolger
patent: 5027709 (1991-07-01), Slagle
patent: 5293308 (1994-03-01), Boys et al.

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