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

Krejcar O, Frischer R - Sensors (Basel) (2012)

Bottom Line: 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).Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power).The price and the size of the final product need to remain low as they are the two important parameters of this solution.

View Article: PubMed Central - PubMed

Affiliation: Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic. Ondrej.Krejcar@remoteworld.net

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.

No MeSH data available.


Analyzer PCB layout. Notice the spill GND signal.
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f6-sensors-12-11391: Analyzer PCB layout. Notice the spill GND signal.

Mentions: To provide reasonable accuracy, input resistors must stay in ±0.5% accuracy tolerance. The operation amplifier inputs are again in a differential connection because of floating ground. Special care must be also targeted at PCB design where unwanted crosstalk is ubiquitous. Any conductor acts as an antenna, in this case because of the use of a relatively high AC voltage. It is mandatory to spill over the GND (ground connection) and to ensure that any unwanted noise is drained to ground. The PCB layout is presented in (Figure 6).


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

Krejcar O, Frischer R - Sensors (Basel) (2012)

Analyzer PCB layout. Notice the spill GND signal.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472890&req=5

f6-sensors-12-11391: Analyzer PCB layout. Notice the spill GND signal.
Mentions: To provide reasonable accuracy, input resistors must stay in ±0.5% accuracy tolerance. The operation amplifier inputs are again in a differential connection because of floating ground. Special care must be also targeted at PCB design where unwanted crosstalk is ubiquitous. Any conductor acts as an antenna, in this case because of the use of a relatively high AC voltage. It is mandatory to spill over the GND (ground connection) and to ensure that any unwanted noise is drained to ground. The PCB layout is presented in (Figure 6).

Bottom Line: 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).Such quality measurement is needed to allow adequate action intervention (feedback which reduces or fully compensates reactive power).The price and the size of the final product need to remain low as they are the two important parameters of this solution.

View Article: PubMed Central - PubMed

Affiliation: Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic. Ondrej.Krejcar@remoteworld.net

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.

No MeSH data available.