Fast-response power factor computation technique

Yaseen, Amer Atta

doi:10.1109/ictea.2012.6462873

Cited by 1 publication

(3 citation statements)

References 8 publications

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“…As shown the performance of the detector is unaffected by the frequency of the input voltage and current. In comparision with other papers speed was not put into account in [18], while special care is realized to adjust the output of the PLL concerning maximum expected peak of the input voltage (current) and to be in phase with the input [20]. Nothing was mentionsd about speed in [21][22][23].…”

Section: Resultsmentioning

confidence: 99%

“…The microcontroller used is PIC18F45. Full description of the required conversion time was reported in [20]. Two non inverting operational amplifiers, level shifters are used to convert a positive to negative signal into a range suitable for the ADC.…”

Section: Hardware Implementationmentioning

confidence: 99%

“…This was developed later by Al-Khalid and Omran to reduce the number of samples needed to only two [17]. Using microcontroller in measuring the power factor was illustrated in [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Ultra fast frequency independent instantaneous power factor detector

Omran¹,

Al-Khalid²,

Yaseen³

2019

IJPEDS

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Many schemes were attempted to lessenthe time taken for measuring the power factor of a linear load. This paper suggests taking advantage of a previous paper where only two samples of the voltage and current were adequate to have a very fast calculation method of the power factor. That scheme used a phase locked loop (PLL) as a frequency multiplier scheme to acquire two progressive samples of the voltage and current which are concurrent. The time elapsed for measurement was the reciprocal of the PLL sampling frequency; no further scheme was reported after that to claim a faster method. This paper gets use of that work to get two progressive samples of voltage and current separated by a short time. The scheme is frequency independent with an indication for lead lag. All the operations are executed by a PIC microcontroller rather than a computer with few support circuits. The output will be shown either in digital or analogue (DC) form. The percentage of error depends mainly on the resolution (number of bits) for both the ADC and DAC used.

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Section: Resultsmentioning

confidence: 99%

Section: Hardware Implementationmentioning

confidence: 99%