Patent · US Active

Variable reactive element in a resonant converter circuit

US8050068B2 · kind B2 · utility

69Cited by

13References

44Claims

0Family size

Assignee

AUCKLAND UNISERVICES LIMITED · NZ

Inventors

Stephan Hussmann · Heide, DE
Aiguo Hu · Auckland, NZ

Key dates

Filing date	May 21, 2004
Grant date	Nov 1, 2011
Priority date	—
Expiry date	Nov 25, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B70/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A resonant converter is provided which may be used for supplying power to the primary conductive path of an inductively coupled power transfer (ICPT) system. The converter includes a variable reactive element in the resonant circuit which may be controlled to vary the effective inductance or capacitance of the reactive element. The frequency of the converter is stabilised to a nominal value by sensing the frequency of the converter resonant circuit, comparing the sensed frequency with a nominal frequency and varying the effective inductance or capacitance of the variable reactive element to adjust the converter frequency toward the nominal frequency.

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