An analysis of harmonics from LED lamps

Uddin, Sohel; Shareef, Hussain; Mohamed, Azah; Hannan, M. A.

doi:10.1109/apemc.2012.6238014

Cited by 41 publications

(23 citation statements)

References 10 publications

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“…The knowledge of the power and harmonic absorptions of each device influences their right application and management [11][12][13][14][15][16][17][18]. In the present paper, three experimental studies are performed, investigating the power consumptions and harmonic absorptions of different types of indoor luminaries.…”

Section: Introductionmentioning

confidence: 99%

Power Quality and Harmonic Analysis of End User Devices

Dolara

Leva

2012

Energies

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Among the non-linear loads used in household, Compact Fluorescent Lamps (CFLs) and LED lamps are becoming more widespread, while incandescent lamps are intended to be replaced by these types of lighting devices. LEDs and CFLs are significantly more efficient and economical than incandescent lamps, and are expected to be used in 100% of residential lighting in the future. As nonlinear loads, LEDs and CFLs produce highly distorted currents. A large number of customers using LEDs or CFLs for domestic, commercial and industrial lighting could determine important Power Quality problems. The paper reports experimental measurement results regarding Power Quality in indoor lighting systems. The harmonic absorptions of several types of luminaries are analyzed, highlighting the impact behavior of different lamps function of used luminaries' technologies. The recorded harmonic absorption allows characterizing the harmonic spectrum variability of the investigated lamps.

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Section: Introductionmentioning

confidence: 99%

Power Quality and Harmonic Analysis of End User Devices

Dolara

Leva

2012

Energies

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“…This second term is present only when triplen harmonics are considered (i.e. h = 3, 9,15,21,29). The values of R ac h ðÞand R ac N h ðÞwere shown in Figures 7(a) and (b), respectively.…”

Section: Light-emitting Diode -An Outlook On the Empirical Features Amentioning

confidence: 99%

“…Several other works have concentrated on the light distribution and visual performance of LED lamps [18][19][20]. A few contributions focused on harmonic emissions of LED lamps [12,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Use of Large Non-Linear Lighting Loads in Low-Voltage Networks

Milardovich¹,

Prevosto²,

Lara³

et al. 2018

Light-Emitting Diode - An Outlook on the Empirical Features and Its Recent Technological Advancements

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The principal numerical and experimental results obtained by the authors on the harmonic power losses in low-voltage networks in the lighting area have been summarized in this review. Light-emitting diodes (LEDs) and compact fluorescent lamp (CFL) loads were considered. Four-core cables and four single-core cable arrangements were examined. The cables were modeled by using electromagnetic finite element analysis software. It was found that the cross section of the neutral conductor plays an important role in the derating of the cable ampacity due to the presence of a high level of triplen harmonics in the distorted current. In order to reduce the third-order harmonic currents in the neutral conductor, an experimental investigation of diversity factors for LED in combination with CFL and LED lamps was also performed. Attention was paid to the reduction of the thirdorder harmonic current, which is mainly responsible for the strong increase in power losses in the neutral conductor of low-voltage installations. The convenience of having LED lamps designed to operate as two-phase loads is suggested for certain applications.

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“…This power factor is function mainly of the ballast circuits. The most advanced LED lamps includes in their ballast circuit an specific electronic circuit to control the power factor and also to reduce the harmonics produced in the electric current by all the ballast circuit, but this harmonics can´t be totally suppressed [7,8,9].…”

Section: A Power and Lightmentioning

confidence: 99%