Patent · US Active

Foreign object detection in wireless energy transfer systems

US10778047B2 · kind B2 · utility

0Cited by

237References

13Claims

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	Jul 13, 2018
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Jan 21, 2039

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.