Boost converter with adaptive reference tracking control for dimmable white LED drivers

Liu, Pang-Jung; Hsu, Yi-Chieh

doi:10.1016/j.mejo.2015.03.022

Cited by 10 publications

(4 citation statements)

References 10 publications

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“…The power LED-driver system generally uses a power converter, like a DC-DC boost converter, to obtain a constant LED current. The boost converter as a LED-driver has been used with satisfactory results in LED lighting applications [1], [2]. This converter is a nonlinear system, also second order non-minimum phase converter, and due to this property, it is difficult to control it [3].…”

Section: Introductionmentioning

confidence: 99%

“…Several controller designs have been proposed, such as [1], where an effective LED current control for a LED-driver system based on a DC-DC boost converter with a Digital Pulse-Width Modulation (DPWM) and a Pulse-Skip Modulation (PSM) are designed. In [2], an LED-driver consisting of dimmable current regulators and a boost converter with Adaptive Reference Tracking Control (ARTC) is proposed. Experimental results demonstrate an effective LED current control with a voltage alteration compensation.…”

Section: Introductionmentioning

confidence: 99%

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Fault Tolerant Control via Input-Output Linearization Method for LED-Driver Using a Boost Converter

et al. 2023

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This paper proposes a method based on an input-output linearization controller with a nonlinear adaptive observer, in order to achieve both an effective light-emitting diode (LED) current tracking and an actuator fault tolerant controller strategy for a LED-driver, using a boost converter. The partial fault is presented as a Loss of Effectiveness (LoE) in the embedded control target by considering that it generates a faulty Pulse-Width Modulation (PWM) signal. Also, faults of energy storage components in the power system are considered as actuator partial faults. An internal stability analysis is presented to ensure the feasibility of the nonlinear controller design. The nominal feedback controller is able to compensate for the nonlinearity of the system exactly, thus yielding a linear control loop. Furthermore, a nonlinear adaptive observer is considered for fault estimation. When the actuator fault is detected and estimated correctly, fault accommodation and reconfiguration strategies are performed to reduce the fault's effect. The controller and observer gains are tuned using genetic algorithm techniques to have a desired closed-loop and fault estimation error response. Finally, simulations results are done in order to illustrate the effectiveness of the proposed methodology.INDEX TERMS Boost converter, fault tolerant control, genetic algorithm, input-output linearization, LEDdriver.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fault Tolerant Control via Input-Output Linearization Method for LED-Driver Using a Boost Converter

et al. 2023

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“…Many authors highlight the fact that for dimming frequency greater than 200 Hz, the human eye perceives luminous intensity loss instead of flicker. 20 The amount of emitted light is known to depend on the average LED current, while its temperature depends on its peak value. 16,17 The IEEE standards PAR1789 group presented the report on the biological effects of flicker in LED lighting technologies.…”

Section: Introductionmentioning

confidence: 99%

“…It is easier to dim LEDs through high frequency PWM current control. 20 The amount of emitted light is known to depend on the average LED current, while its temperature depends on its peak value. Besides, the LED drivers may generate unwanted electromagnetic interference (EMI).…”

Section: Introductionmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.

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A low standby power consumption AC/DC converter with exponential compensation

Chang

Jiang

et al. 2017

Microelectronics Journal

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Boost converter with adaptive reference tracking control for dimmable white LED drivers

Cited by 10 publications

References 10 publications

Fault Tolerant Control via Input-Output Linearization Method for LED-Driver Using a Boost Converter

Fault Tolerant Control via Input-Output Linearization Method for LED-Driver Using a Boost Converter

An overview of energy efficient solid state LED driver topologies

A low standby power consumption AC/DC converter with exponential compensation

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