Demagnetization using a determined estimated magnetic state
A method for demagnetizing comprising positioning a core within the electromagnetic field generated by a first winding until the generated first electrical current is not substantially increasing, thereby determining a saturation current. A second voltage, having the opposite polarity, is then applied across the first winding until the generated second electrical current is approximately equal to the magnitude of the determined saturation current. The maximum magnetic flux within the core is then determined using the voltage across said first winding and the second current. A third voltage, having the opposite polarity, is then applied across the first winding until the core has a magnetic flux equal to approximately half of the determined maximum magnetic flux within the core.
- Research Organization:
- Bonneville Power Administration, Portland, OR (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- U.S. Department of Energy (Washington, DC)
- Patent Number(s):
- 8,934,210
- Application Number:
- 13/535,637
- OSTI ID:
- 1167201
- Resource Relation:
- Patent File Date: 2012 Jun 28
- Country of Publication:
- United States
- Language:
- English
Method and apparatus for magnetizing and demagnetizing current transformers and magnetic bodies
|
patent | December 2000 |
Method and apparatus for accurate measurement of pulsed electric currents utilizing ordinary current transformers
|
patent | November 2002 |
Method and apparatus for controlling the magnetization of current transformers and other magnetic bodies
|
patent | February 2003 |
Similar Records
PULSE GENERATOR BASED ON HIGH SHOCK DEMAGNETIZATION OF FERROMAGNETIC MATERIAL
Coupled-inductor DC-DC power converter