Microcontroller Power Mode Stabilized Power Factor Correction Stage for High Intensity Discharge Lamp Electronic Ballast

Azcondo, F.J.; Díaz, Francisco Javier Llorca; Brañas, C.; Casanueva, R.

doi:10.1109/tpel.2007.896509

Cited by 41 publications

(23 citation statements)

References 10 publications

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“…One of the reasons behind this is the voltage variation range of the IEFL lamp that under dimming operation is wider than in other lamps. The power efficiency of the proposed approach at similar power levels can be compared with single-stage ballasts ranging from 83% [12] to 93% [13] and conventional two-stage ballasts whose efficiencies are typically around 85% to 90% [14].…”

Section: Resultsmentioning

confidence: 99%

“…Assuming now that k(t) is time-varying, the corresponding equivalent control, and ideal dynamics are given by (14) and (15) respectively…”

Section: Sliding-mode Dynamics Of the First Power Stagementioning

confidence: 99%

“…Although single-stage solutions exist [10][11][12][13], ballasts for discharge lamps are typically composed of two stages [14]. The first stage is a buck, boost, or buck-boost stage performing power factor correction (PFC) and providing an approximately constant DC-link voltage.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Loss-Free Resistor-Based Versatile Ballast for Discharge Lamps

Valderrama-Blavi¹,

León-Masich²,

Olalla³

et al. 2019

Energies

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This paper presents a versatile ballast for discharge lamps, whose operation is based on the notion of a loss-free resistor (LFR). The ballast consists of two stages: (1) a boost converter operating in continuous conduction mode (CCM) and exhibiting an LFR behavior imposed by sliding-mode control; and (2) a resonant inverter supplying the discharge lamp at high frequencies. Thanks to this mode of operation, the power transferred to the lamp is regulated by the LFR input resistance, allowing successful ignition, warm-up, nominal, and dimming operation of a range of discharge lamps, with no need for complex regulation schemes based on lamp models. The versatility of the ballast has been experimentally proven for both conventional and electrodeless discharge lamps. Tests include induction electrodeless fluorescent (IEFL), high-pressure sodium (HPS) vapor, and metal-halide lamps.

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Section: Resultsmentioning

confidence: 99%

“…Assuming now that k(t) is time-varying, the corresponding equivalent control, and ideal dynamics are given by (14) and (15) respectively…”

Section: Sliding-mode Dynamics Of the First Power Stagementioning

confidence: 99%

See 1 more Smart Citation

A Loss-Free Resistor-Based Versatile Ballast for Discharge Lamps

Valderrama-Blavi¹,

León-Masich²,

Olalla³

et al. 2019

Energies

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“…Electronic ballasts should also meet the IEC 61000 3-2 [12] class C standard focused on electronic lighting equipment. Two EB are considered: EB-1 results from a Buck-Boost type PFC section controlled in voltage-mode supplying the required voltage to minimize the reactive component in the second section [14], [9], [15]; a resonant inverter operating at constant switching frequency designed to present minimum power deviation during the lamp lifetime [13]. In single phase PFC stages, the best utility factor is achieved using the boost topology, however to minimize the circulating current in the resonant tank it is required that the input voltage of the RI be lower than the maximum utility line voltage.…”

Section: A Ballast Descriptionmentioning

confidence: 99%

Effects of Flicker on Different Types of 150-W High-Pressure Sodium Lamps and Ballasts

Azcondo

Ortiz

Manana

et al. 2007

2007 IEEE Industry Applications Annual Meeting

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The limits of the severity of flicker caused by voltage fluctuations is defined in Europe by the standard CENELEC EN 50160. Under normal operating conditions, flicker level will not exceed the long term severity P lt =1 during 95% of the time in one week. This threshold was originally established considering that a lamp with tungsten coiled coil filament of 60 W and 230 V that is gas-filled produces a flicker perceivable by 50% of the population when it is supplied with a voltage that verifies P lt =1. Other light sources like fluorescent lamps and discharge lamps with ballasts exhibit a different behavior under the same supply conditions. This means that the flickermeter should be different for each type of illumination technique ir order to provide accurate information about flicker phenomena. At the same time, lamp age also plays an important role in flicker generation.In this research work, a test system and a methodology able to measure the optical fluctuation produced by different types of lamps and ballast is presented. This experimental platform allows to obtain a correlation between voltage flicker levels and optical flicker perception. It can be considered the first step in the definition of new lamp models. This work also shows that age lamp has a significant correlation with flicker generation.

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“…Vantagens como flexibilidade, confiabilidade, robustez contra ruídos e baixo custo motivaram a utilização de um controlador digital implementado em um microcontrolador de baixo custo. Na literatura são encontrados vários exemplos de reatores microcontrolados para lâmpadas HPS [11] - [14], [18].…”

Section: Introductionunclassified

Controlador Digital Para Reator Eletrônico Baseado Na Conexão Diferencial Entre Conversores Cc-cc Para Lâmpadas De Vapor De Sódio Em Alta Pressão

Vargas¹,

Hansen²,

Oberto³

et al. 2013

Eletrônica de Potência

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Resumo -Este trabalho apresenta a modelagem, o projeto de controle e a implementação de um reator eletrônico microcontrolado, baseado na conexão diferencial entre conversores CC-CC, para lâmpadas de descarga de vapor de sódio em alta pressão. A topologia final do reator é caracterizada pela integração do estágio diferencial (composto por dois conversores do tipo flyback) a um conversor buck-boost usado como estágio de correção do fator de potência. Com base nos modelos obtidos através da modelagem por espaço de estados, realiza-se o projeto de duas malhas de controle: uma malha externa de potência e malha interna de corrente. Os controladores foram implementados digitalmente em um microcontrolador de baixo custo. Um protótipo de 70W alimentado por tensão eficaz de rede de 220V foi construído para comprovar a ideia proposta.Abstract -This paper presents the modeling, control design and implementation of a microcontrolled electronic ballast to supply high pressure sodium lamps based on differential connection of DC-DC converters. The ballast topology is characterized by the integration of the differential stage, composed by two flyback converters (as power control stage), and a buck-boost converter (as power factor correction stage). Based on the obtained models through space state modeling technique, the control loops design (outer power loop and inner current loop) are done for the ballast circuit. Next, the implementation of the designed controller is accomplished with a low cost microcontroller. A 70 W prototype fed by 220V RMS line voltage was built to prove the proposed idea.

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Microcontroller Power Mode Stabilized Power Factor Correction Stage for High Intensity Discharge Lamp Electronic Ballast

Cited by 41 publications

References 10 publications

A Loss-Free Resistor-Based Versatile Ballast for Discharge Lamps

A Loss-Free Resistor-Based Versatile Ballast for Discharge Lamps

Effects of Flicker on Different Types of 150-W High-Pressure Sodium Lamps and Ballasts

Controlador Digital Para Reator Eletrônico Baseado Na Conexão Diferencial Entre Conversores Cc-cc Para Lâmpadas De Vapor De Sódio Em Alta Pressão

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