Method for enabling monitoring of power consumption
Abstract
Power consumption at a site is monitored. An electrical load is connected to a power source by an electrical conductor. A fuel-less energy producing device is electrically connected to a junction along the electrical conductor. A current sensor is electromagnetically coupled to the electrical conductor at a sensing position between the power source and the junction to create a current sensor signal. Sensed current and voltage signals are produced from the current sensor signal. A sensed phase relationship between the sensed signals is determined and compared to a baseline phase relationship to determine the direction of current flow through the conductor. A power source signal, based on the current flowing through the conductor at the sensing position, is created. With some examples a Rogowski type differential current sensor is used. In some examples a single current sensor is used.
- Inventors:
- Issue Date:
- Research Org.:
- SunPower Corporation, San Jose, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1531614
- Patent Number(s):
- 7622912
- Application Number:
- 12/136,698
- Assignee:
- SunPower Corporation (San Jose, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- DOE Contract Number:
- FC36-07GO17043
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2008-06-10
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 14 SOLAR ENERGY
Citation Formats
Adams, Frank J., and Klein, David L. Method for enabling monitoring of power consumption. United States: N. p., 2009.
Web.
Adams, Frank J., & Klein, David L. Method for enabling monitoring of power consumption. United States.
Adams, Frank J., and Klein, David L. Tue .
"Method for enabling monitoring of power consumption". United States. https://www.osti.gov/servlets/purl/1531614.
@article{osti_1531614,
title = {Method for enabling monitoring of power consumption},
author = {Adams, Frank J. and Klein, David L.},
abstractNote = {Power consumption at a site is monitored. An electrical load is connected to a power source by an electrical conductor. A fuel-less energy producing device is electrically connected to a junction along the electrical conductor. A current sensor is electromagnetically coupled to the electrical conductor at a sensing position between the power source and the junction to create a current sensor signal. Sensed current and voltage signals are produced from the current sensor signal. A sensed phase relationship between the sensed signals is determined and compared to a baseline phase relationship to determine the direction of current flow through the conductor. A power source signal, based on the current flowing through the conductor at the sensing position, is created. With some examples a Rogowski type differential current sensor is used. In some examples a single current sensor is used.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {11}
}