INDUCTIVE POWER PICK-UP COILS

摘要

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.