SYSTEM AND METHOD OF PROVIDING COMMUNICATIONS IN A WIRELESS POWER TRANSFER SYSTEM

• Main Authors: MOORE COLIN J, NORCONK MATTHEW J, LIFF DALE R, GRUICH ROBERT D, KUYVENHOVEN NEIL W, TAYLOR JOSHUA B, AMISTADI JASON L, ARMSTRONG KENNETH C, SCHWANNECKE JOSHUA K, KELLEY ARTHUR
• Format: Patent
• Language: English; Korean
• Published: 07.05.2014
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSMISSION

A communication system that uses keyed modulation to encode fixed frequency communications on a variable frequency power transmission signal in which a single communication bit is represented by a plurality of modulations. To provide a fixed communication rate, the number of modulations associated with each bit is dynamic varying as a function of the ratio of the communication frequency to the carrier signal frequency. In one embodiment, the present invention provides dynamic phase-shift-keyed modulation in which communications are generated by toggling a load at a rate that is a fraction of the power transfer frequency. In another embodiment, the present invention provides communication by toggling a load in the communication transmitter at a rate that is phase locked and at a harmonic of the power transfer frequency. In yet another embodiment, the present invention provides frequency-shift-keyed modulation, including, for example, modulation at one of two different frequencies.