A NEW FILTER-BANK CONFIGURATION FOR HARMONIC MEASUREMENT

Citation
Hw. Sun et al., A NEW FILTER-BANK CONFIGURATION FOR HARMONIC MEASUREMENT, IEEE transactions on instrumentation and measurement, 45(3), 1996, pp. 739-744
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
ISSN journal
00189456
Volume
45
Issue
3
Year of publication
1996
Pages
739 - 744
Database
ISI
SICI code
0018-9456(1996)45:3<739:ANFCFH>2.0.ZU;2-P
Abstract
In this paper a new adaptive filter-bank structure suitable for the ac curate harmonic measurement in power supply systems is presented. This adaptive measurement technique is based on the resonator-in-a-loop fi lter-bank structure and includes a new modified Gauss-Newton Gradient algorithm. Using this filter-bank structure and a least-squared error approximation method, simulation results are presented to establish th e performance of the technique. The effects of time-varying fundamenta l frequency are also investigated using this filter-bank structure. Si mulation results show that the fundamental frequency can be tracked wi th very small error. The technique is also successfully applied to a m easured voltage signal sampled from the mains to demonstrate performan ce.