Electro-optic voltage sensor for sensing voltage in an E-field
Abstract
A miniature electro-optic voltage sensor system capable of accurate operation at high voltages is disclosed. The system employs a transmitter, a sensor disposed adjacent to but out of direct electrical contact with a conductor on which the voltage is to be measured, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor where the beam undergoes the Pockels electro-optic effect. The electro-optic effect causes phase shifting in the beam, which is in turn converted to a pair of independent beams, from which the voltage of a system based on its E-field is determined when the two beams are normalized by the signal processor. The sensor converts the beam by splitting the beam in accordance with the axes of the beam`s polarization state (an ellipse whose ellipticity varies between -1 and +1 in proportion to voltage) into at least two AM signals. These AM signals are fed into a signal processor and processed to determine the voltage between a ground conductor and the conductor on which voltage is being measured. 18 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 335476
- Patent Number(s):
- 5892357
- Application Number:
- PAN: 8-569,338
- Assignee:
- Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States)
- DOE Contract Number:
- AC07-94ID13223
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 6 Apr 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ELECTRIC POTENTIAL; ELECTRIC MEASURING INSTRUMENTS; DESIGN; MINIATURIZATION; ELECTRO-OPTICAL EFFECTS; DATA PROCESSING; POCKELS CELL
Citation Formats
Woods, G K, and Renak, T W. Electro-optic voltage sensor for sensing voltage in an E-field. United States: N. p., 1999.
Web.
Woods, G K, & Renak, T W. Electro-optic voltage sensor for sensing voltage in an E-field. United States.
Woods, G K, and Renak, T W. Tue .
"Electro-optic voltage sensor for sensing voltage in an E-field". United States.
@article{osti_335476,
title = {Electro-optic voltage sensor for sensing voltage in an E-field},
author = {Woods, G K and Renak, T W},
abstractNote = {A miniature electro-optic voltage sensor system capable of accurate operation at high voltages is disclosed. The system employs a transmitter, a sensor disposed adjacent to but out of direct electrical contact with a conductor on which the voltage is to be measured, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor where the beam undergoes the Pockels electro-optic effect. The electro-optic effect causes phase shifting in the beam, which is in turn converted to a pair of independent beams, from which the voltage of a system based on its E-field is determined when the two beams are normalized by the signal processor. The sensor converts the beam by splitting the beam in accordance with the axes of the beam`s polarization state (an ellipse whose ellipticity varies between -1 and +1 in proportion to voltage) into at least two AM signals. These AM signals are fed into a signal processor and processed to determine the voltage between a ground conductor and the conductor on which voltage is being measured. 18 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 06 00:00:00 EDT 1999},
month = {Tue Apr 06 00:00:00 EDT 1999}
}