Time-varying harmonic analyzer prototype

D.F. Fabri, C.H. Martins, L.R.M. Silva, C.A. Duque, P.F. Ribeiro, A.S. Cerqueira

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

15 Citations (Scopus)
144 Downloads (Pure)


This paper presents a time-varying harmonic analyzer based on the Sliding Window DFT implemented on a DSP platform. The harmonic decomposition is carried out using the TMS320F28027 digital signal processor, and the samples of the decomposed signal are sent to a PC based computer using serial interface. Several real cases are analyzed, revealing the time-varying behavior of the harmonic component. Different from commercial harmonic analyzer, the prototype presented in this paper uses a different way to visualize the harmonic components, based on time decomposition approach. This new visualization of time-varying harmonics might help engineers and researchers to develop new insights in the transient mechanisms of waveform distortions and possible new applications for power quality monitoring, control and protection.
Original languageEnglish
Title of host publicationProceedings of the 14th International Conference on Harmonics and Quality of Power (ICHQP 2010), 26-29 September 2010, Bergamo, Italy
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-4244-7245-1
Publication statusPublished - 2010


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