Patent · US Active

Foreign object detection in wireless energy transfer systems

US9442172B2 · kind B2 · utility

15Cited by

235References

18Claims

0Family size

Assignee

WiTricity Corporation · US

Inventors

Simon Verghese · Arlington, US
Morris P. Kesler · Bedford, US
Katherine L. Hall · Westford, US
Herbert Toby Lou · Carlisle, US

Key dates

Filing date	Sep 10, 2012
Grant date	Sep 13, 2016
Priority date	—
Expiry date	Dec 30, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A wireless energy transfer system includes a foreign object debris detection system. The system includes at least one wireless energy transfer source configured to generate an oscillating magnetic field. The foreign object debris may be detected by at least one field gradiometer positioned in the oscillating magnetic field. The voltage of the at least one field gradiometer may be measured using readout circuitry and a feedback loop based on the readings from the gradiometers may be used to control the parameters of the wireless energy source.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.