Wireless power transfer

US10298058B2 · kind B2 · utility

Assignee

• The Regents of the University of Colorado, a Body Corporate · US

Inventors

• Khurram K. Afridi · Ithaca, US
• Ashish Kumar · Manhattan, US
• Zoya Popovic · Boulder, US
• Dragan Maksimovic · Boulder, US
• Chieh-Kai Chang · Grosse Pointe Woods, US
• Guilherme Goularte Da Silva · Boulder, US
• Saad Pervaiz · Dallas, US

Key dates

• Filing date: May 4, 2016
• Grant date: May 21, 2019
• Expiry date: May 4, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/14
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A capacitive wireless power transfer (WPT) architecture that provides for dynamic (i.e., in motion) and/or stationary power transfer is provided. In various implementations, for example, the capacitive WPT architecture can achieve high power transfer levels at high efficiencies while maintaining fringing field strengths within acceptable safety limits. In one implementation, for example, a multi-module capacitive wireless power transfer system provides a capacitive charging system, such as for, but not limited to, charging electric vehicles (EV). In another implementation, a capacitive wireless power transfer module is provided. The module, for example, comprises a plurality of first coupling plates adapted to be coupled to a power source via an inverter; a plurality of second coupling plates adapted to be coupled to a load and to the plurality of first coupling plates for receiving wireless power and a matching network adapted to provide reactive compensation and gain.