An official website of the United States government

Control of inductive power transfer pickups

Patent
US-6483202-B1
Inventor
BOYS JOHN TALBOT (NZ)
Assignee
AUCKLAND UNISERVICES LTD (US)
Country
United States
Dates
  • Priority:
    1997/11/17
  • Grant:
    2002/11/19
Description
This web page summarizes information in PubChem about patent US-6483202-B1. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.

1 Abstract

Secondary resonant pickup coils (102) used in loosely coupled inductive power transfer systems, with resonating capacitors (902) have high Q and could support large circulating currents which may destroy components. A current limit or "safety valve" uses an inductor designed to enter saturation at predetermined resonating currents somewhat above normal working levels. Saturation is immediate and passive. The constant-current characteristic of a loosely coupled, controlled pickup means that if the saturable section is shared by coupling flux and by leakage flux, then on saturation the current source is terminated in the saturated inductor, and little detuning from resonance occurs. Alternatively an external saturable inductor (1101, 1102) may be introduced within the resonant circuit (102 and 902), to detune the circuit away from the system frequency. Alternatively DC current may be passed through a winding to increase saturation of a saturable part of a core. As a result, a fail-safe pickup offering a voltage-limited constant-current output is provided.

2 Full Text

3 Important Dates

3.1 Priority Date

1997/11/17

3.2 Filing Date

1998/11/16

3.3 Publication Date

2002/11/19

3.4 Grant Date

2002/11/19

4 Inventor

BOYS JOHN TALBOT (NZ)

5 Assignee

AUCKLAND UNISERVICES LTD (US)

6 Country

United States

7 Linked Chemicals

7.1 PubChem Compounds

7.2 PubChem Substances

8 Patent Family

9 Classification

9.1 IPC

B60L5/00 (inventive)

H02J17/00 (inventive, first)

H02J5/00 (inventive)

B60M7/00 (inventive)

9.2 CPC

H02J3/06 (inventive, first)

H02J50/12 (inventive)

B60L5/005 (inventive, first)

B60L2200/26

10 Citations

11 Cited By

12 Similar Patents

13 Information Sources

  1. Google Patents
    LICENSE
    "Google Patents Research Data" by Google, based on data provided by IFI CLAIMS Patent Services and OntoChem, is licensed under a Creative Commons Attribution 4.0 International License.
    https://creativecommons.org/licenses/by/4.0/legalcode
  2. PubChem
CONTENTS