Self-Oscillating Dimmable Electronic Ballast for Fluorescent Lamps

Chan, S.S.M.; Chung, Henry Shu-Hung; Hui, R.S.Y.

doi:10.1109/lpel.2004.838777

Cited by 19 publications

(6 citation statements)

References 7 publications

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“…Since the SEPIC converter has two inductors that define L eq , the first one, L 1 , is designed based on the input current ripple (∆i L1 ) definition, according to (4), where the L 1 peak current (i L1pk ) is given by (5). Finally, having L 1 and L eq defined, the SEPIC L 2 inductance is obtained by (6).…”

Section: A Pfc Stage Design Methodologymentioning

confidence: 99%

High power factor dimmable self-oscillating electronic ballast with variable inductor control

Menke¹,

Silva²,

Seidel³

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents a new high power factor dimmable self-oscillating electronic ballast (DSOEB), in which a variable inductor (VI) is used to control the fluorescent lamp (FL) power. Two different approaches are proposed to provide a wide dimming range using a self-oscillating electronic ballast, and a power factor correction (PFC) stage. In the first one, the VI is placed in the series resonant parallel-loaded filter (SRPLI), controlling the rms value of the lamp current with the dc bus voltage supplied by the PFC stage in a closed loop, and in the second one, the VI is placed in the PFC stage, controlling directly the power feeding the inverter. Experimental results for both topologies are presented to evaluate the preliminary performance of the circuit for a 32 W FL.

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Section: A Pfc Stage Design Methodologymentioning

confidence: 99%

High power factor dimmable self-oscillating electronic ballast with variable inductor control

Menke¹,

Silva²,

Seidel³

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…Typical electronic ballast consists of two stages: power factor correction (PFC) and half-bridge (HB) series resonant parallel-loaded inverter (LCC) [4]. The PFC stage must be able to meet standards of power factor and current harmonic content [5].…”

Section: Introductionmentioning

confidence: 99%

“…In practice the combination of these methods can be used in order to improve the performance of electronic ballasts. Several solutions have been presented in the literature to implement dimmable electronic ballasts with SOCC, using different dimming methods [3], [4], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Iterative Method for Analysis of Dimmable Self-oscillating Electronic Ballast Under Bus Voltage Control

Menke¹,

Silva²,

Seidel³

et al. 2015

Eletrônica de Potência

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This paper presents a predictive method of the self-oscillating electronic ballast (SOEB) behavior under dimming conditions. This work is focused on the bus voltage variation dimming method, where a closed analysis is not possible to carry out without considering the interaction among inverter bus voltage, fluorescent lamp power/resistance nonlinear behavior, and frequency operation of the SOEB. Thus, an iterative method is proposed in order to predict the oscillating frequency related with the fluorescent lamp power under bus voltage variation. Experimental results for a T8 32 W fluorescent lamp are obtained in order to compare simulation results, and verify the feasibility of the proposed method.

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“…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. However, there are still some concerns in dimming applications.…”

Section: Introductionmentioning

confidence: 99%

Dimmable electronic ballasts by variable power density modulation technique

Börekçi

Kesler

2014

International Journal of Electronics

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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

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Self-Oscillating Dimmable Electronic Ballast for Fluorescent Lamps

Cited by 19 publications

References 7 publications

High power factor dimmable self-oscillating electronic ballast with variable inductor control

High power factor dimmable self-oscillating electronic ballast with variable inductor control

Iterative Method for Analysis of Dimmable Self-oscillating Electronic Ballast Under Bus Voltage Control

Dimmable electronic ballasts by variable power density modulation technique

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