A Power Factor Standard Using Digital Waveform Generation

Oldham,; Turgel,

doi:10.1109/mper.1981.5511901

Cited by 2 publications

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“…Because of its excellent phase and waveform stability, the phase standard has found applications not immediately related to its phase meter calibration function, and it has formed the basis for further specialized instrumentation development. For instance, with auxiliary voltage and current amplifiers, the phase standard can be used as a stable, easily adjustable signal source for checking wattmeters and watthour meters [ 9 , 10 ]. It can also be used to test various signal analyzers that need a phase-variable reference.…”

Section: Other Applications Of the Phase Angle Standardmentioning

confidence: 99%

Phase meter calibration at NBS

Turgel¹

1988

J. RES. NATL. BUR. STAN.

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To provide a phase meter calibration service, a phase angle calibration standard has been developed at NBS. This standard is a signal. generator with two sinusoidal outputs and uses direct digital synthesis to generate the signals. The phase angle between the two sinusoids is determined by the input parameters in the calculation of the sets of digital values from which the analog output is synthesized. An auto-zero compensation mode corrects for residual phase differences in the two output channels. The phase resolution is better than 0.002' over a frequency range from 2 Hz to 5 kHz and 0.005' from 5 to 50 kHz. Phase meter calibration data are fitted to a linear model from which appropriate corrections for the phase meter readings can be derived. Statistical treatment of the data provides an estimate of the uncertainty of the corrected phase meter readings relative to the phase angle calibration standard.

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Section: Other Applications Of the Phase Angle Standardmentioning

confidence: 99%

Phase meter calibration at NBS

Turgel¹

1988

J. RES. NATL. BUR. STAN.

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“…A staircase waveform is an important form of output from a digital-to-analogue conversion. Many papers have been published to discuss its properties [1,2], its applications in the AC voltage standard [3][4][5][6][7][8], the power measurement [9][10][11][12][13], the phase reference [14], the impedance comparison [15], the harmonic component measurement and the analogue-to-digital converter calibration [16]. Devices which implement digital-to-analogue conversion are available from the electronic digital-to-analogue converter (DAC), and the programmable Josephson voltage standard minimises uncertainty at the quantum level.…”

Section: Introductionmentioning

confidence: 99%

Discussion on new properties of staircase waveform through connection to an infinite series

2015

IET Science, Measurement & Technology

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The staircase waveform produced by digital-to-analogue conversion is applied widely in electricity metrology, based on the known properties. However, a continuous investigation of new properties is still very important for its further applications. An infinite series is presented through analysis of the producing process of the staircase waveform. Based on the model of 'digitalto-analogue converter (DAC) aliasing effect', when the parameters of the series are extended from an integral to a real number, new properties are discussed. The concepts of 'asynchronous sampling ', 'sub-' and 'inter-harmonic' and 'under-Nyquist sampling' are derived into DAC. The more interesting phenomena are detailed. The results of simulations and experiments are reported.

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A Power Factor Standard Using Digital Waveform Generation

Cited by 2 publications

References 0 publications

Phase meter calibration at NBS

Phase meter calibration at NBS

Discussion on new properties of staircase waveform through connection to an infinite series

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