System and method for regulating inductive power transmission

An inductive power outlet for providing power to at least one electric load via at least one inductive power receiver, said inductive power outlet comprising:

• at least one primary inductor for forming an inductive couple with at least one secondary inductor of said at least one inductive power receiver;
• a driver configured to provide a driving voltage across said primary inductor, said driving voltage oscillating at a transmission frequency significantly different from the natural frequency of said inductive couple;
• a signal detector operable to receive instruction signals from a signal emitter associated with said inductive power receiver during power transfer;
• at least one outlet-side frequency modulator operable to adjust the natural frequency of the inductive couple according to said instruction signals such that induced power provided to the electric load is regulated during power transfer,
• wherein said at least one outlet-side frequency modulator comprises an element selected from the group consisting of:
• at least one frequency modulation coil configured to modify magnetic permeability of at least one magnetic flux guide;
• at least one dimension modifier configured to modify the dimensions of at least one inductor;
• at least one dimension modifier configured to modify the dimensions of at least one capacitor;
• and
• a combination thereof.

A method for regulating power transfer across an inductive couple between an inductive power outlet and an inductive power receiver, the method comprising:

• providing an inductive power outlet comprising a primary coil and a driver;
• providing an inductive power receiver comprising a secondary coil, a power monitor
• providing at least one frequency modulator;
• said driver providing a voltage to a primary coil oscillating at a transmission frequency significantly different from the natural frequency of said inductive couple;
• inducing a secondary voltage across said secondary coil wired to an electric load;
• determining a required power range for said electric load;
• monitoring power received by the electric load during power transfer;
• comparing said power received by the electric load to the required power during power transfer;
• if the monitored power lies outside the required power range instructing said frequency modulator to adjust the natural frequency of said inductive couple during power transfer;
• and said frequency modulator adjusting the natural frequency of said inductive couple during power transfer such that the monitored power is regulated during power transfer,
• wherein said frequency modulator adjusting is selected from the group consisting of:
• modifying magnetic permeability of at least one magnetic flux guide of at least one frequency modulation coil;
• modifying the dimensions of at least one inductor by at least one dimension modifier;
• and
• modifying the dimensions of at least one inductor by the at least one dimension modifier.