A TMS320-based reactive power meter

A novel reactive power meter realized by digital signal processing (DSP) techniques that determine the terms on an equation for n significant harmonics is described. This reactive current definition is advantageous in that by minimizing this value the maximum power factor may be obtained for nonsinu...

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Bibliographic Details
Main Authors: Montano Asquerino, J.C., Lopez Ojeda, A., Castilla Ibanez, M., Gutierrez Benitez, J.
Format: Conference Proceeding
Language:English
Subjects:
Current measurement
Digital signal processing
Discrete Fourier transforms
Equations
Frequency domain analysis
Frequency measurement
Power measurement
Power system harmonics
Reactive power
Voltage
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Summary:A novel reactive power meter realized by digital signal processing (DSP) techniques that determine the terms on an equation for n significant harmonics is described. This reactive current definition is advantageous in that by minimizing this value the maximum power factor may be obtained for nonsinusoidal systems. Using the discrete Fourier transform (DFT) of two sets of real data in one pass, the voltage and current spectra are obtained simultaneously. Real and imaginary parts of both spectra are then processed to obtain the terms of the aforementioned equation. Some results of simulated measurements and a practical realization using the TMS320 single-chip microcomputer are given.< >
DOI:10.1109/IECON.1990.149149