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Real Time Voltage and Current Phase Shift Analyzer for Power Saving Applications
Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic
* Author to whom correspondence should be addressed.
Received: 26 June 2012; in revised form: 13 August 2012 / Accepted: 14 August 2012 / Published: 21 August 2012
Abstract: 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.
Keywords: remote sensors; analyzer; real-time measurement; phase shift
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Cite This Article
MDPI and ACS Style
Krejcar, O.; Frischer, R. Real Time Voltage and Current Phase Shift Analyzer for Power Saving Applications. Sensors 2012, 12, 11391-11405.
Krejcar O, Frischer R. Real Time Voltage and Current Phase Shift Analyzer for Power Saving Applications. Sensors. 2012; 12(8):11391-11405.
Krejcar, Ondrej; Frischer, Robert. 2012. "Real Time Voltage and Current Phase Shift Analyzer for Power Saving Applications." Sensors 12, no. 8: 11391-11405.