An Evaluation of the Three-Voltmeter Method for AC Power Measurement
Оценка метода трех вольтметров для измерения мощности в цепях переменного тока
1972-01-01
SCID: 54.1/3cyyap5x
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AC power measurementanalog circuitrythree-voltmeter methodtime-division multiplier wattmeterzero power factor
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Abstract (AI)
The accuracy and frequency response limitations in the present square-law responding laboratory wattmeters have promoted the search for alternate methods of ac power measurement using electronic instrumentation. The three-voltmeter method is based on an old principle of operation implemented by new analog circuitry. Results of the tests reported here show a precision of power calculation with 0.01 percent error at frequencies below 5 kHz. A unique test procedure is described for the comparison of the three-voltmeter device and a time-division multiplier wattmeter operating at zero power factor.
Key Findings
1
A unique procedure compares the three-voltmeter device with a time-division multiplier wattmeter at zero power factor.
2
Tests demonstrate power-calculation precision within 0.01 percent error at frequencies below 5 kHz.
3
The method implements an established operating principle with new analog circuitry.
4
The study evaluates the three-voltmeter method as an alternative for AC power measurement using electronic instrumentation.
Research Object
Three-voltmeter method and its electronic-instrumentation implementation for AC power measurement
Research Subject
Measurement accuracy and frequency response, including comparison with a time-division multiplier wattmeter at zero power factor
Publication Details
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1972-01-01
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