Flicker produced by harmonics modulation

Author

Pomilio, José Antenor ; Deckmann, Sigmar Maurer

Author_Institution

Sch. of Electr. & Comput. Eng., Univ. of Campinas, Brazil

Volume

18

Issue

2

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

387

Lastpage

392

Abstract

Flicker effect caused by voltage harmonics modulation is discussed. Simple functions are used to show that harmonic components, despite satisfying the specific harmonic limits, may produce flicker due to combined amplitude modulation (AM). Computer simulations, based on the International Electro-technical Commission (IEC) methodology, are numerically validated and then applied to calculate the instantaneous flicker sensation, resulting from different combinations of harmonics modulation. The results are also confirmed in laboratory tests using a flickermeter to measure the flicker levels obtained by synthesizing the same type of signals on a programmable function generator.

Keywords

IEC standards; amplitude modulation; harmonic distortion; power system analysis computing; power system harmonics; IEC methodology; combined amplitude modulation; computer simulations; flicker effect; flickermeter; harmonic components; instantaneous flicker sensation; programmable function generator; voltage harmonics modulation; Amplitude modulation; Computer simulation; Frequency; IEC standards; Laboratories; Lamps; Power harmonic filters; Power system harmonics; Testing; Voltage fluctuations;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2002.807455

Filename

1193854