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SS-L wireless power transfer compensation circuit

A charging circuit and circuit technology, applied in battery circuit devices, reactive power adjustment/elimination/compensation, circuit devices, etc., can solve the problems of large leakage inductance and small mutual inductance of WPT system

Active Publication Date: 2017-08-29
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will make the WPT system have large leakage inductance and small mutual inductance

Method used

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  • SS-L wireless power transfer compensation circuit
  • SS-L wireless power transfer compensation circuit
  • SS-L wireless power transfer compensation circuit

Examples

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Embodiment Construction

[0025] Embodiments of the present disclosure are described herein. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the embodiments.

[0026] As will be appreciated by persons of ordinary skill in the art, various features illustrated and described with reference to any one figure may be combined with features illustrated in one or more other figures to create embodiments not explicitly illustrated or described. Combinations of features described provide representative embodiments for typical applications. However, various combinations and modification...

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Abstract

The invention discloses an SS-L wireless power transfer compensation circuit. A secondary side wireless power transfer compensation circuit includes a secondary coil, a capacitor in series with the secondary coil, and an inductor in parallel with the secondary coil and capacitor. The inductor has an impedance matching a reflected impedance of a load electrically connected thereacross such that the secondary coil achieves resonance with a primary coil coupled therewith at a predetermined frequency that depends on the impedance.

Description

technical field [0001] The present disclosure relates to compensation circuit topologies for wireless power transfer circuits. Background technique [0002] In a wireless power transfer (WPT) process, energy is transmitted through mutual inductance between a sending coil and a receiving coil. Because there is a gap between the transmit and receive coils, the coupling coefficient between these two coils can be small (5% to 30%) depending on the size, alignment and distance of the coils. This will cause the WPT system to have a large leakage inductance and a small mutual inductance. Compensation circuits including capacitors are often used to eliminate such leakage inductance by tuning the coil to operate the coil at its resonant frequency. Contents of the invention [0003] A circuit includes an inductor connected in parallel with a load and a secondary coil and a capacitor connected in series, and having an impedance such that the secondary coil and the primary coil achi...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J3/18
CPCH02J7/025H02J3/1807H02J50/12H02J50/70B60L53/122Y02T10/70Y02T10/7072Y02T90/14H02J50/10H03H7/38
Inventor 穆罕默德·艾尔沙伊尔内文·奥图尤特理查德·威廉姆·卡伍兹哈迪·马雷克
Owner FORD GLOBAL TECH LLC