Title :
Virtual instrument based instrumentation for harmonic current emission measurement
Author :
Mahesh, G. ; Das, Sisir K. ; George, Bohy ; Jayashankar, V. ; Kumar, V. Jagadeesh
Author_Institution :
Center for Electromagn., SAMEER, Chennai, India
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.
Keywords :
Gaussian noise; IEC standards; electric current measurement; harmonic distortion; measurement systems; quantisation (signal); virtual instrumentation; Gaussian noise; IEC 61000-3-2; analog front end; harmonic current emission measurement; harmonic measurements; instrumentation system; measurement accuracy; measuring system; quantization errors; virtual instrument; virtual instrumentation; Current measurement; Electric variables measurement; Electromagnetic measurements; Gaussian noise; IEC standards; Instruments; Power system harmonics; Probability distribution; Quantization; Signal to noise ratio;
Conference_Titel :
Electromagnetic Interference and Compatibility, 2003. INCEMIC 2003. 8th International Conference on
Print_ISBN :
81-900652-1-1
DOI :
10.1109/ICEMIC.2003.1287881
