Title :
A wavelet-based method of measuring fluctuating harmonics for determining the filter time constant of IEC standard harmonic analyzers
Author :
Clarkson, Paul ; Wright, Paul S.
Author_Institution :
Div. of Enabling Metrol., Nat. Phys. Lab., Teddington, UK
fDate :
4/1/2005 12:00:00 AM
Abstract :
Harmonic analyzers are used to test the fluctuating harmonic emissions of electrical appliances to international regulations. This paper describes a wavelet-based method of measuring level-changing harmonics (bursts) for use in the calibration of these analyzers. The method is shown to be reliable for measuring various mixtures of harmonics. The importance of calibrating harmonic analyzers under conditions of fluctuating harmonics is discussed.
Keywords :
IEC standards; calibration; domestic appliances; electric variables measurement; harmonic analysis; measurement standards; wavelet transforms; IEC standard; electric variables measurement; electrical appliances; electromagnetic compatibility; filter time constant; fluctuating harmonic emissions; fluctuating harmonics measurement; harmonic analysis; harmonic analyzers; international regulations; signal analysis; wavelet transforms; wavelet-based method; Calibration; Discrete Fourier transforms; Electrical products; Electromagnetic compatibility; Harmonic analysis; IEC standards; Power harmonic filters; Testing; Time measurement; Wavelet analysis; Calibration; electric variables measurement; electromagnetic compatibility (EMC); harmonic analysis; signal analysis; wavelet transforms;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.843327
