Interference mitigation for multiple inductive systems

摘要

A system and method for mitigating interference between two or more inductive systems. Interference can be mitigated by, in response to an interference causing event, temporarily adjusting operation of one or more of the inductive sub-systems to reduce interference. A controller can receives communication from multiple inductive systems and instruct the systems to operate so as to reduce interference. The inductive systems can coordinate to operate out of phase with respect to one another to reduce interference. Communication from a data transfer inductive system can be mimicked by another inductive system so that both systems transmit the communication. Interference between multiple inductive systems can be mitigated by specific physical positioning of the transmitters of the inductive sub-systems.

主权项

1. A method for reducing electromagnetic interference between a first inductive system and a second inductive system, the method comprising:
determining there is interference between the first inductive system and the second inductive system; in response to determining there is interference between the first inductive system and the second inductive system, adjusting operation of the first inductive system to reduce the interference; wherein adjusting operation of the first inductive system includes adjusting an operating frequency of the first inductive system away from an operating frequency of the second inductive system whereby interference between the first inductive system and the second inductive system is reduced; wherein the first inductive system adjusts at least one of rail voltage, phase, and duty cycle to maintain constant power transfer to a device while the operating frequency of the first inductive system is adjusted, wherein said adjusting operation of the first inductive system includes mimicking a communication signal of the second inductive system.