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This paper presents a new approach for harmonic/inter-harmonic analysis in power systems. The method is based on phase error of discrete fourier transform (DFT) when an asynchronous sampling is performed. simple moving average filters (MAF) are used to eliminate the oscillatory results of DFT. Linear equations are used to estimate the frequency of each component present in the input signal. The estimated frequency is used to correct the DFT smoothed amplitude by means of a polynomial curve fitting of the frequency response of the DFT. This method takes advantage of the recursive formulation of DFT, resulting in a low cost computational algorithm.
Published in:
Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE
Date of Conference: 20-24 July 2008
- Page(s):
- 1 - 7
- ISSN :
- 1932-5517
- E-ISBN :
- 978-1-4244-1906-7
- Print ISBN:
- 978-1-4244-1905-0
- INSPEC Accession Number:
- 10141771
- Conference Location :
- Pittsburgh, PA
- Digital Object Identifier :
- 10.1109/PES.2008.4596293
- Product Type:
- Conference Publications
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