Time-varying harmonic analyzer prototype

Author

Fabri, Diego F. ; Martins, Carlos H N ; Silva, Leandro R M ; Duque, Carlos A. ; Ribeiro, Paulo F. ; Cerqueira, Augusto S.

Author_Institution

Fed. Univ. of Juiz de Fora, Juiz de Fora, Brazil

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

1

Lastpage

7

Abstract

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.

Keywords

digital signal processing chips; discrete Fourier transforms; power supply quality; power system harmonics; DSP platform; TMS320F28027 digital signal processor; discrete Fourier transform; harmonic decomposition; power quality monitoring; sliding window DFT; time-varying harmonic analyzer; waveform distortions; Discrete Fourier transforms; Frequency modulation; Hardware; Harmonic analysis; Power harmonic filters; Time frequency analysis; DSP; Recursive DFT; harmonic decomposition; time-varying harmonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on

Conference_Location

Bergamo

Print_ISBN

978-1-4244-7244-4

Electronic_ISBN

978-1-4244-7245-1

Type

conf

DOI

10.1109/ICHQP.2010.5625319

Filename

5625319