Tracking generator of calibrated harmonics

Author

Pogliano, U.

Author_Institution

Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy

Volume

1

fYear

2001

fDate

21-23 May 2001

Firstpage

624

Abstract

A tracking generator of calibrated harmonies has been experimented at IEN. This system acquires the sinusoidal input supplied by a precision AC calibrator and the internal DSP produces, by means of a DAC, an output signal combination of calibrated harmonics components, which is added to the sinusoidal signal of the calibrator. In this way an ordinary 12 bit DAC can obtain a precision signal with an assigned THD less than 10%. Some algorithms for generating the signal and for tracking with high accuracy the internal reference to the external input signal have been developed. By means of them the frequency and phase difference can be recovered within than 10^-4 rad in less than 0.1 s

Keywords

calibration; digital signal processing chips; digital-analogue conversion; harmonic distortion; phase locked loops; tracking; waveform generators; AC generator; DAC; PLL; analog adder; calibrated harmonics; distorted waveform; frequency difference; harmonic distortion; high accuracy; internal DSP; output signal combination; phase differenc; precision AC calibrator; precision signal; signal generation algorithms; sinusoidal input; tracking generator; Circuits; Digital signal processing; Electric variables measurement; Frequency; Phase distortion; Power generation; Power measurement; Power system harmonics; Signal generators; Tracking loops;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928893

Filename

928893