Off-resonance frequency operation for power transfer in a loosely coupled air core transformer
Abstract
A power transmission system includes a loosely coupled air core transformer having a resonance frequency determined by a product of inductance and capacitance of a primary circuit including a primary coil. A secondary circuit is configured to have a substantially same product of inductance and capacitance. A back EMF generating device (e.g., a battery), which generates a back EMF with power transfer, is attached to the secondary circuit. Once the load power of the back EMF generating device exceeds a certain threshold level, which depends on the system parameters, the power transfer can be achieved at higher transfer efficiency if performed at an operating frequency less than the resonance frequency, which can be from 50% to 95% of the resonance frequency.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1080321
- Patent Number(s):
- 8310202
- Application Number:
- 12/858,070
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 24 POWER TRANSMISSION AND DISTRIBUTION
Citation Formats
Scudiere, Matthew B. Off-resonance frequency operation for power transfer in a loosely coupled air core transformer. United States: N. p., 2012.
Web.
Scudiere, Matthew B. Off-resonance frequency operation for power transfer in a loosely coupled air core transformer. United States.
Scudiere, Matthew B. Tue .
"Off-resonance frequency operation for power transfer in a loosely coupled air core transformer". United States. https://www.osti.gov/servlets/purl/1080321.
@article{osti_1080321,
title = {Off-resonance frequency operation for power transfer in a loosely coupled air core transformer},
author = {Scudiere, Matthew B},
abstractNote = {A power transmission system includes a loosely coupled air core transformer having a resonance frequency determined by a product of inductance and capacitance of a primary circuit including a primary coil. A secondary circuit is configured to have a substantially same product of inductance and capacitance. A back EMF generating device (e.g., a battery), which generates a back EMF with power transfer, is attached to the secondary circuit. Once the load power of the back EMF generating device exceeds a certain threshold level, which depends on the system parameters, the power transfer can be achieved at higher transfer efficiency if performed at an operating frequency less than the resonance frequency, which can be from 50% to 95% of the resonance frequency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 13 00:00:00 EST 2012},
month = {Tue Nov 13 00:00:00 EST 2012}
}
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