Influence of Voltage and Frequency Dimming on Power Losses in HF Electronic Ballasts for Compact Fluorescent Lamps

Shafi,; McMahon,

doi:10.1109/ias.2006.256846

Cited by 7 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12 Beyond this range, excessive switching loss and parasitic components may cause inefficient operation of the electronic switches S 1 -S 4 . 27 The number of desired power levels (n) must be an integer which is utilized to Members of X(j) are the desired power levels (%) with equal intervals arranged in descending order in the 100%-50% dimming range.…”

Section: Driving Frequency Computationmentioning

confidence: 99%

A design methodology for acoustic resonance-free, high-frequency, dimmable electronic ballast for high-pressure sodium-vapour lamps

Bakshi¹,

Roy

2019

Lighting Research & Technology

View full text Add to dashboard Cite

This paper presents a methodology to design acoustic resonance-free, high-frequency, dimmable electronic ballasts for high-pressure sodium vapour (HPSV) lamps having a range of rated wattage (70–400 W). After estimation of the ‘quiet window’ of an HPSV lamp, the proposed iterative algorithm is able to determine the acoustic resonance-free driving frequencies of a design ballast corresponding to 50%–100% power level. On the other hand, a developed wattage and voltage independent HPSV lamp model facilitates finding the required electrical characteristics of HPSV lamps without performing laboratory experimentation. Using the estimated driving frequencies of a design ballast and the synthesized electrical characteristics of the lamp, the design circuit parameters of an electronic ballast are determined. Performance evaluation of the designed ballasts, carried out on the Matlab–Simulink platform, indicates several important attributes, viz. higher power control accuracy (deviation ≤3.69%), near-unity lamp power factor (≥0.98), lower lamp current crest factor (<1.7) and lower lamp current total harmonic distortion (≤12.63%). Results establish the effectiveness of the proposed design methodology to design lightweight and compact electronic ballasts for HPSV lamps with less effort than conventional design practice.

show abstract

Section: Driving Frequency Computationmentioning

confidence: 99%

A design methodology for acoustic resonance-free, high-frequency, dimmable electronic ballast for high-pressure sodium-vapour lamps

Bakshi¹,

Roy

2019

Lighting Research & Technology

View full text Add to dashboard Cite

show abstract

“…1 is modeled by a behavioral model which was shown to give good results in terms of ballast power loss simulations [5,6]. The lamp is first characterized by a characterization circuit and then modeled by using the equation below, rms rms…”

Section: A Electrode Type Compact Fluorescent Lampmentioning

confidence: 99%

Comparison of Self-Oscillating Electrode and Electrode-Less Compact Fluorescent Lamps from Loss Perspective

Shafi

McMahon

Weier

2008

2008 IEEE Industry Applications Society Annual Meeting

View full text Add to dashboard Cite

Integrated compact fluorescent lamps (CFLs) are gaining a major share of the market owing to their low power consumption and long life. In this work the performance of integrated electronic ballasts for both electrode and electrode-less lamps is explored in terms of their efficiencies. The power losses were measured in a high precision mini-calorimeter. A break down of the power losses in the two ballast circuits was done by simulation in PSPICE environment. Moreover, the effect of voltage dimming upon the power losses in electrode-less lamp ballast is also shown. The results are helpful in pointing to how the efficiency of these ballast circuits can be improved.

show abstract

“…Dimming can be achieved by varying the DC bus voltage, duty ratio and switching frequency (Cho, Oh, Yeon, & Kim, 2006;Lam & Jain, 2005a, 2005b, 2006Lin, 2006;Shafi & Mcmohon, 2006;Tam, Lee, & Hui, 2006;Yan & Hui, 2005). Magnetic dimming techniques (Alonso, Dalla-Costa, Cardesín, & García, 2005;Alonso, Dalla-Costa, Cardesin, Garcia, & Rico-Scades, 2005;Alonso, Dalla Costa, Rico-Secades, Cardesin, & Garcia, 2008;Borekci, 2009;Borekci & Oncu, 2007;Chan, Chung, & Hui, 2004Lee, Chung, & Hui, 2004;Perdigao, Alonso, Vaquero, & Saraiva, 2011;Tao, Zhao, & Lee, 2001) also become popular since they offer soft starting, low electromagnetic interference (EMI) and constant electrode power.…”

Section: Introductionmentioning

confidence: 98%

Dimmable electronic ballasts by variable power density modulation technique

Börekçi

Kesler

2014

International Journal of Electronics

View full text Add to dashboard Cite

Dimming can be accomplished commonly by switching frequency and pulse density modulation techniques and a variable inductor. In this study, a variable power density modulation (VPDM) control technique is proposed for dimming applications. A fluorescent lamp is operated in several states to meet the desired lamp power in a modulation period. The proposed technique has the same advantages of magnetic dimming topologies have. In addition, a unique and flexible control technique can be achieved. A prototype dimmable electronic ballast is built and experiments related to it have been conducted. As a result, a 36WT8 fluorescent lamp can be driven for a desired lamp power from several alternatives without modulating the switching frequency. IntroductionHigh-frequency electronic ballasts are commonly used due to several advantages over magnetic ones. Electronic ballasts offer increased energy efficacy, better controllability and no humming problem. In order to provide energy savings and to meet the desired luminaries in a space, electronic ballasts can be designed with dimming functions.Dimming can be achieved by varying the DC bus voltage, duty ratio and switching

show abstract

Influence of Voltage and Frequency Dimming on Power Losses in HF Electronic Ballasts for Compact Fluorescent Lamps

Cited by 7 publications

References 7 publications

A design methodology for acoustic resonance-free, high-frequency, dimmable electronic ballast for high-pressure sodium-vapour lamps

A design methodology for acoustic resonance-free, high-frequency, dimmable electronic ballast for high-pressure sodium-vapour lamps

Comparison of Self-Oscillating Electrode and Electrode-Less Compact Fluorescent Lamps from Loss Perspective

Dimmable electronic ballasts by variable power density modulation technique

Contact Info

Product

Resources

About