Harmonics algorithm. Harmonics are the sinusoidal voltages or currents having frequencies that are integer multiples of the
frequency at which the supply system is designed to operate (termed the fundamental frequency). Distorted waveforms can be
decomposed into sum of the fundamental frequency and its harmonics.
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The measurement uses the Discrete Fourier Transform (DFT) to calculate the Real component (Re(k)) and Imaginary
component Im(k). The Real component (Re(k)) and Imaginary component Im(k) are calculated using the following equation:
Where:
Re[k] is the Real component of kth harmonic.
Im[k] is the Imaginary component of kth harmonic.
i is the Index of the input data value.
k is the Index of the harmonics, k index is calculated using the harmonics number.
x[i] is the discrete set of acquire time samples.
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Harmonics Fk is calculated using the following equation:
Where:
F[k] is the kth harmonic, in Amp/Volt.
Unit of F[k] for voltage signal is Volt and for current signal is Ampere.
Harmonics is converted into dB using the following equation:
F[k]
dB
is the k
th
harmonic, dBA or dBV based on the harmonics input source configuration.
NOTE. In case of 'AM 14' standard, acquired signal is divided into 15 chunks and all harmonics are calculated for each
chunk. For each individual harmonics maximum is taken out of 15 values.
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RMS: The RMS of harmonics is calculated in unit of volt or ampere using the following equation:
F1 is the fundamental harmonics or line harmonics.
Measurement algorithms
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MSO54, MSO56, MSO58, MSO58LP, MSO64 Help
Содержание 6 series
Страница 24: ...Product documents and support 4 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 42: ...Options 22 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 54: ...Install your instrument 34 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 63: ...9 FlexChannel probe connectors Getting acquainted with your instrument MSO54 MSO56 MSO58 MSO58LP MSO64 Help 43 ...
Страница 84: ...Getting acquainted with your instrument 64 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 102: ...Configure the instrument 82 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 148: ...Advanced triggering 128 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 154: ...Zooming on waveforms 134 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 438: ...Waveform acquisition concepts 418 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 448: ...Waveform display concepts 428 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...
Страница 483: ...Where σ is the Phase Angle Degree Measurement algorithms MSO54 MSO56 MSO58 MSO58LP MSO64 Help 463 ...
Страница 518: ...Index 498 MSO54 MSO56 MSO58 MSO58LP MSO64 Help ...