Led spectral and power characteristics under hybrid PWM/AM dimming strategy

Szymon Beczkowski; Stig Munk-Nielsen

doi:10.1109/ECCE.2010.5617930

Led spectral and power characteristics under hybrid PWM/AM dimming strategy

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Abstract

In order to dim LEDs the pulse width modulation (PWM) or amplitude modulation (AM) dimming scheme is typically used. Previous studies show that these dimming schemes can have opposite effects on diodes peak wavelength shift. An experimental study was conducted to test the behavior of InGaN diodes and phosphor-converted white diodes under hybrid PWM/AM modulation. Feed forward control schemes that provide stable peak wavelength position during dimming and the ability to compensate the thermally induced color shifts and the decrease of the luminous flux are investigated.

Originalsprog	Engelsk
Titel	Proceedings of the IEEE Energy Conversion Congress and Exposition, ECCE 2010
Antal sider	5
Forlag	IEEE Press
Publikationsdato	sep. 2010
Sider	731-735
ISBN (Trykt)	978-1-4244-5286-6
DOI	https://doi.org/10.1109/ECCE.2010.5617930
Status	Udgivet - sep. 2010
Begivenhed	IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, USA Varighed: 12 sep. 2010 → 16 sep. 2010

Konference

Konference	IEEE Energy Conversion Congress and Exposition, ECCE 2010
Land/Område	USA
By	Atlanta
Periode	12/09/2010 → 16/09/2010

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10.1109/ECCE.2010.5617930

LED spectral and power characteristics under hybrid PWM:AM dimming strategyIndsendt manuskript, 363 KB

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title = "Led spectral and power characteristics under hybrid PWM/AM dimming strategy",

abstract = "In order to dim LEDs the pulse width modulation (PWM) or amplitude modulation (AM) dimming scheme is typically used. Previous studies show that these dimming schemes can have opposite effects on diodes peak wavelength shift. An experimental study was conducted to test the behavior of InGaN diodes and phosphor-converted white diodes under hybrid PWM/AM modulation. Feed forward control schemes that provide stable peak wavelength position during dimming and the ability to compensate the thermally induced color shifts and the decrease of the luminous flux are investigated. ",

keywords = "Light-emitting diodes, Amplitude modulation, Pulse width modulation",

author = "Szymon Beczkowski and Stig Munk-Nielsen",

year = "2010",

month = sep,

doi = "10.1109/ECCE.2010.5617930",

language = "English",

isbn = "978-1-4244-5286-6 ",

pages = "731--735 ",

booktitle = "Proceedings of the IEEE Energy Conversion Congress and Exposition, ECCE 2010",

publisher = "IEEE Press",

note = "IEEE Energy Conversion Congress and Exposition, ECCE 2010 ; Conference date: 12-09-2010 Through 16-09-2010",

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TY - GEN

T1 - Led spectral and power characteristics under hybrid PWM/AM dimming strategy

AU - Beczkowski, Szymon

AU - Munk-Nielsen, Stig

PY - 2010/9

Y1 - 2010/9

N2 - In order to dim LEDs the pulse width modulation (PWM) or amplitude modulation (AM) dimming scheme is typically used. Previous studies show that these dimming schemes can have opposite effects on diodes peak wavelength shift. An experimental study was conducted to test the behavior of InGaN diodes and phosphor-converted white diodes under hybrid PWM/AM modulation. Feed forward control schemes that provide stable peak wavelength position during dimming and the ability to compensate the thermally induced color shifts and the decrease of the luminous flux are investigated.

AB - In order to dim LEDs the pulse width modulation (PWM) or amplitude modulation (AM) dimming scheme is typically used. Previous studies show that these dimming schemes can have opposite effects on diodes peak wavelength shift. An experimental study was conducted to test the behavior of InGaN diodes and phosphor-converted white diodes under hybrid PWM/AM modulation. Feed forward control schemes that provide stable peak wavelength position during dimming and the ability to compensate the thermally induced color shifts and the decrease of the luminous flux are investigated.

KW - Light-emitting diodes

KW - Amplitude modulation

KW - Pulse width modulation

U2 - 10.1109/ECCE.2010.5617930

DO - 10.1109/ECCE.2010.5617930

M3 - Article in proceeding

SN - 978-1-4244-5286-6

SP - 731

EP - 735

BT - Proceedings of the IEEE Energy Conversion Congress and Exposition, ECCE 2010

PB - IEEE Press

T2 - IEEE Energy Conversion Congress and Exposition, ECCE 2010

Y2 - 12 September 2010 through 16 September 2010

ER -

Led spectral and power characteristics under hybrid PWM/AM dimming strategy

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