Real time voltage and current phase shift analyzer for power saving applications

Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced). Reactive power is the main component which overloads power lines and brings excessiv...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2012-08, Vol.12 (8), p.11391-11405
Main Authors: Krejcar, Ondrej, Frischer, Robert
Format: Article
Language:English
Subjects:
Accuracy
analyzer
Devices
Electric potential
Energy consumption
Phase shift
Power lines
Reactive power
Real time
real-time measurement
Refrigerators
remote sensors
Sensors
Voltage
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Summary:Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced). Reactive power is the main component which overloads power lines and brings excessive thermal stress to conductors. If the reactive power is optimized, it can significantly lower the electricity consumption (from 10 to 30%-varies between countries). This paper will examine and discuss the development of a measuring device for analyzing reactive power. However, the main problem is the precise real time measurement of the input and output voltage and current. Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power). Several other issues, such as the accuracy and measurement speed, must be examined while designing this device. The price and the size of the final product need to remain low as they are the two important parameters of this solution.
ISSN:1424-8220
1424-8220
DOI:10.3390/s120811391