Analysis, design and performance evaluation of an LED driver with unity power factor and constant-current primary sensing regulation

Gritti, Giovanni; Adragna, Claudio

doi:10.3934/energy.2019.5.579

Cited by 5 publications

(6 citation statements)

References 3 publications

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“…The control method investigation is based on the analysis detailed in [47,50]. The control method quantities depending on the instantaneous line voltage.…”

Section: Control Methods To Obtain High Power Factormentioning

confidence: 99%

Passive and Active Topologies Investigation for LED Driver Circuits

Musumeci¹

2021

Light-Emitting Diodes and Photodetectors - Advances and Future Directions [Working Title]

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In this chapter, a survey of LED driver circuits is presented. The driver circuit is a crucial component in the LED light system. It provides the correct voltage and current values for the best brightness and long life. Furthermore, the driver circuits contribute to obtaining high efficiency and reliability light system. Several lighting applications need different driver topologies that meet the use requirement and the energy sources available. In actual applications, passive and active circuits are implemented to satisfy the LED driver electrical requirements and cost-effective demands. The LED driver circuits investigation evaluate the issues and the solutions in the LED lighting systems connected to a DC source such as a battery or AC line. The AC line connection requisites such as the power factor correction and the harmonic distortion are dealt with both the driver topology and control optimization. Also, the volume reduction need is examined in the circuitry choice. Moreover, the different topologies of the power converters isolated and not isolated used in the driver circuits based on both the power request and supply source are described and critically evaluated.

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“…The control method investigation is based on the analysis detailed in [47,50]. The control method quantities depending on the instantaneous line voltage.…”

Section: Control Methods To Obtain High Power Factormentioning

confidence: 99%

Passive and Active Topologies Investigation for LED Driver Circuits

Musumeci¹

2021

Light-Emitting Diodes and Photodetectors - Advances and Future Directions [Working Title]

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“…It is worth noting the decrease in switching losses with respect to a flyback converter operated with a fixed frequency. Moreover, the QR driver has an enhanced transient response in DCM operation [44,45] and it may have a smaller EMI filter [46]. In fact, in applications operated from the mains, the switching frequency is modulated at twice the mains frequency due to the voltage ripple appearing across the input capacitance.…”

Section: Switching Led Drivermentioning

confidence: 99%

“…Energies 2020, 4, x FOR PEER REVIEW 6 of 24 enhanced transient response in DCM operation [44,45] and it may have a smaller EMI filter [46]. In fact, in applications operated from the mains, the switching frequency is modulated at twice the mains frequency due to the voltage ripple appearing across the input capacitance.…”

Section: Switching Led Drivermentioning

confidence: 99%

Analysis of the Input Current Distortion and Guidelines for Designing High Power Factor Quasi-Resonant Flyback LED Drivers

et al. 2020

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Nowadays, LED lamps have become a widespread solution in different lighting systems due to their high brightness, efficiency, long lifespan, high reliability and environmental friendliness. The choice of a proper LED driver circuit plays an important role, especially in terms of power quality. In fact, the driver controls its own input current in addition to the LED output current, thus it must guarantee a high power factor. Among the various LED drivers available on the market, the quasi-resonant (QR) flyback topology shows interesting benefits. This paper aims at investigating and analyzing the different issues related to the input current distortion in a QR flyback LED driver. Several effects, such as the distortion caused by the ringing current, crossover distortion due to transformer leakage inductance and crossover distortion due to the input storage capacitor have been experimentally reported. These effects, not previously studied for a high power factor (Hi-PF) QR flyback, have been analyzed in depth. Finally, some practical design guidelines for a Hi-PF QR flyback driver for LED applications are provided.

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“…The AFE, or synchronous rectifier, is connected via a filter to the utility grid where it performs AC/DC conversion and PFC [23,24]. Figure 3 shows the circuit test-bench emulator implementation using the Simulink Simscape Electrical Toolbox, a typical AFE control strategy based on the voltage oriented control algorithm.…”

Section: Active Front-end Rectifiermentioning

confidence: 99%

A Tool for Evaluating the Performance of SiC-Based Bidirectional Battery Chargers for Automotive Applications

et al. 2020

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In this paper, a procedure to simulate an electronic power converter for control design and optimization purposes is proposed. For the addressed application, the converter uses SiC-MOSFET technology in bidirectional battery chargers composed of two power stages. The first stage consists of a single-phase AC/DC power factor correction synchronous rectifier. The following stage is a DC/DC dual active bridge. The converter has been modulated using a phase-shift technique which is able to manage bidirectional power flows. The development of a model-based simulation approach is essential to simplify the different design phases. Moreover, it is also important for the final validation of the control algorithm. A suitable tool consisting of a system-level simulation environment has been adopted. The tool is based on a block diagram design method accomplished using the Simulink toolbox in MATLAB™.

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Analysis, design and performance evaluation of an LED driver with unity power factor and constant-current primary sensing regulation

Cited by 5 publications

References 3 publications

Passive and Active Topologies Investigation for LED Driver Circuits

Passive and Active Topologies Investigation for LED Driver Circuits

Analysis of the Input Current Distortion and Guidelines for Designing High Power Factor Quasi-Resonant Flyback LED Drivers

A Tool for Evaluating the Performance of SiC-Based Bidirectional Battery Chargers for Automotive Applications

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