Title :
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
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;
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
DOI :
10.1109/ICHQP.2010.5625319
