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Virtual instrument based instrumentation for harmonic current emission measurement
V. Jayashankar, V. Jagadeesh Kumar,
Published in Institute of Electrical and Electronics Engineers Inc.
2003
Volume: 2003-January
   
Pages: 399 - 402
Abstract
An instrumentation system for the measurement of harmonic emission to IEC 61000-3-2 is a subset of the general problem of harmonic measurements. A condition is derived for the SNR of a signal (with monotonically decaying harmonic amplitudes) to be zero due to quantization errors. This is enlarged to cover Gaussian noise in the analog front end of the measuring system. A virtual instrument, which can considerably improve the measurement accuracy of a single stage analog front end and digitiser, is then suggested. © 2003 Society of EMC Engineers.
Concepts (21)
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    DIGITAL INSTRUMENTS
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    Electric current measurement
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    Electric variables measurement
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    Electromagnetic pulse
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    Electromagnetic wave interference
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    Harmonic analysis
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    Instruments
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    Probability distributions
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    Quantization (signal)
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    Signal interference
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    Signal to noise ratio
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    Standards
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    ELECTROMAGNETIC MEASUREMENT
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    HARMONIC MEASUREMENTS
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    Iec standards
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    INSTRUMENTATION SYSTEMS
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    Measurement accuracy
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    POWER SYSTEM HARMONICS
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    Quantization
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    Quantization errors
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    Gaussian noise (electronic)