Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Comparisons of the execution times and memory requirements for high-speed discrete fourier transforms and fast fourier transforms, for the measurement of AC power harmonics

Roscoe, A.J. and Burt, G.M. (2011) Comparisons of the execution times and memory requirements for high-speed discrete fourier transforms and fast fourier transforms, for the measurement of AC power harmonics. In: 2nd IMEKO TC 11 International Symposium Metrological Infrastructure, 2011-06-15 - 2011-06-17, Dubrovnik.

[img]
Preview
PDF
Roscoe_C2011_IMEKO_Fourier_20110511.pdf - Submitted Version

Download (379kB) | Preview

Abstract

Conventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach. However, in this paper it is shown that carefully coded discrete transforms which distribute their computational load over many frames can be made to produce results in shorter execution times than the FFT approach, even for large number of harmonic measurement frequencies. This is because the execution time of the presented DFT actually rises with N and not the classical N2 value, while the execution time of the FFT rises with Nlog2N.

Item type: Conference or Workshop Item (Paper)
ID code: 33377
Notes: I can't find out where this proceeding actually got published. The conf. website is http://www.imeko-mi2011.org/ and you ought to be able to access proceedings at http://www.imeko.org/ but it doesn't seem to have anything from 2011 at the moment.
Keywords: power system harmonics, harmonic analysis, Fourier transforms, power quality, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date Deposited: 28 Sep 2011 13:48
Last modified: 15 Apr 2015 09:14
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/33377

Actions (login required)

View Item View Item