A comparative study on dimming control methods for electronic ballasts

Ho, Y.K.E.; Lee, S.T.S.; Chung, Henry Shu-Hung; Hui, S.Y.R.

doi:10.1109/63.974381

Cited by 85 publications

(25 citation statements)

References 12 publications

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“…This means that a special dimming control system is needed for these approaches. Also, it has been shown [3] that frequency-control dimming method will increase the switching and core losses in the ballast circuit. For CFL, such circuit is housed inside a plastic cover.…”

Section: Introductionmentioning

confidence: 99%

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An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

Tam

Hui

Chung

2006

2006 37th IEEE Power Electronics Specialists Conference

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Traditional compact fluorescent lamps (CFL) cannot be dimmed by triac dimmer. In this paper, the technical issues behind the incompatibility between the triac dimmer and the internal ballast of the compact fluorescent lamp are addressed. Based on the charge-pump concept and voltage dimming control, a dimmable CFL design that is compatible with triac dimmers is analyzed and developed. A 16W CFL prototype has been built and tested. Experiments have confirmed that a wide and stable dimming range from 2.2W to 16W can be achieved.I.

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Section: Introductionmentioning

confidence: 99%

“…The criteria for achieving compatibility are discussed. A new design of IC-less electronic ballast based on the use charge-pump technique [4][5] and varying dc link voltage dimming scheme [3] running at 220V 50Hz AC system is proposed. The design is verified with a 16W prototype.…”

Section: Introductionmentioning

confidence: 99%

An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

Tam

Hui

Chung

2006

2006 37th IEEE Power Electronics Specialists Conference

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“…Fig. 3 shows the structure of practical electronic ballast that consists of an active or passive power factor corrector (PFC), an inverter and an LC tank circuit [36]. The PFC and the inverter are interconnected through a high-voltage dc link, typically at 400V.…”

Section: Introductionmentioning

confidence: 99%

An energy-recyclable burn-in technology for electronic ballasts for HID lamps

Chen

Chung

2010

2010 IEEE Energy Conversion Congress and Exposition

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Eco-friendly electronic products can help save the environment by using less electricity. However, saving energy is not only about reducing the electricity consumption of a product; it should also encompass the electricity consumed in the production process. After a product is assembled, it has to go through a burn-in process for weeding out infant mortalities and thus improving the product reliability. The use of energyrecycling in the burn-in process is popular nowadays in the power supply industry.Existing burn-in process for electronic ballasts is conducted by connecting lamps or resistors at their output. All electrical energy is converted into heat and light. Not only does this method waste electricity, it also raises room temperatures in the factory, which results in installing ventilation systems to release the excessive heat. This paper presents an energy-recyclable burn-in technology for electronic ballast for HPS lamps. The device can emulate the lamp characteristics, process high-frequency ballast output power and recycle the power back into the grid. An experimental prototype for a 400W high-pressure sodium (HPS) electronic ballast is built and evaluated.

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“…A single-stage HID ballast with frequency modulation is discussed in [23] for commercial application. The dimming control of high-power metal halide lamps have been discussed in [18]- [20], and [26]. In [18], the dimming operation and the influence of the topology on dimming performance are discussed.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In [18], the dimming operation and the influence of the topology on dimming performance are discussed. The dimming operation at low frequency is implemented in [19] and [20]. The dimming control based on voltage and frequency control is discussed in [21], [22], and [26].…”

Section: Literature Reviewmentioning

confidence: 99%

Implementation of a Voltage Multiplier Integrated HID Ballast Circuit With Dimming Control for Automotive Application

Divakar

Cheng

Wang

et al. 2009

IEEE Trans. Ind. Electron.

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Abstract-High-intensity discharge (HID) lamps are becoming popular substitutes for halogen lamps in automotive headlamps because of the high lumen/watt ratio and the color of the light. In this paper, a ballast (integrated with a voltage multiplier circuit in the secondary winding of the dc converter transformer) with dimming control is presented. The proposed circuit not only eliminates one auxiliary winding but also reduces the voltage across the switch on the primary side and consequently permits the selection of switches with a lower rating. A brief review of the HID circuits is done and compared with the proposed circuit. Experimental results from the prototype are presented. This paper also presents different methods of dimming the automotive HID lamps based on analog and digital control and discusses the relative merits of each of the methods. The dimming control is implemented using both the methods, and experimental results are presented. It is envisaged that the dimming control will provide some flexibility to drivers in the control of HID lamps to suit the driving conditions in the modern cities that are very well lit at night. This paper investigates the merits of each method and discusses the practical issues for implementing such controls.Index Terms-Constant power, dimming control, highintensity discharge (HID) ballast.

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A comparative study on dimming control methods for electronic ballasts

Cited by 85 publications

References 12 publications

An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

An energy-recyclable burn-in technology for electronic ballasts for HID lamps

Implementation of a Voltage Multiplier Integrated HID Ballast Circuit With Dimming Control for Automotive Application

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