Efficieny analysis of Quadratic buck converter for LED lamp driver applications

Yadlapalli, Ravindranath Tagore; Anuradha, K.

doi:10.1109/icoei.2017.8300917

Cited by 8 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The state variables in the vector x are the inductor currents,

and

and the capacitor voltages,

and

. The input vector u contains the supply voltage,

and the three diodes forward voltage drops,

and the output vector y is the same as the state vector [ 36 ]. For easier tracking of calculations, the notation

was chosen for the grouping of parallel resistors at the converter’s output.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fourth-Order Quadratic Buck Converter Controller Design

Pop,

Pop-Calimanu,

Lascu

2024

Sensors

View full text Add to dashboard Cite

This paper aims to outline the process of dimensioning a controller tailored for a fourth-order step-down converter. In order to conduct a thorough small-signal analysis, it is imperative to find the state–space model in matrices form. Given its fourth-order nature, the control-to-output transfer function also aligns with this order, although its degree is ultimately reduced to a second-order using the tfest function. It is remarkable that the design of the type III error amplifier assumes a central position in the overall controller design process. The theoretical analysis was then subjected to rigorous validation via simulation, with particular attention paid to the step response in both input voltage and output resistance. This study developed from the desire to validate the efficacy of reducing the control-to-output transfer function degree using the tfest function, aiming to highlight a fourth-order converter to which controller design theory can be applied, related to that for a second-order converter.

show abstract

“…The state variables in the vector x are the inductor currents,

and

and the capacitor voltages,

and

. The input vector u contains the supply voltage,

and the three diodes forward voltage drops,

and the output vector y is the same as the state vector [ 36 ]. For easier tracking of calculations, the notation

was chosen for the grouping of parallel resistors at the converter’s output.…”

Section: Methodsmentioning

confidence: 99%

“…In the literature, the number of quadratic converters is very high. In [ 36 ], a switching regulator with a quadratic-based step-down topology used in hybrid electrical vehicles is presented.…”

Section: Introductionmentioning

confidence: 99%

Fourth-Order Quadratic Buck Converter Controller Design

Pop,

Pop-Calimanu,

Lascu

2024

Sensors

View full text Add to dashboard Cite

show abstract

“…This gain is adjusted in the controller circuit by RFC/R1C. It is important to notice that expressions (30) and (33) provide a first approximation of internal and external loop controller gains; subsequently, an iterative tuning process has to be carried out to guarantee the appropriate robust stability of the regulator.…”

Section: External Voltage Loop Designmentioning

confidence: 99%

Control Scheme for a Quadratic-Based Step-Down On-Board DC/DC Converter to Be Used in Hybrid Electric Vehicles

Antuna-Fiscal,

Leyva-Ramos,

Ortiz-Lopez

et al. 2023

Energies

View full text Add to dashboard Cite

This paper discusses a switching regulator with a quadratic-based step-down DC/DC converter designed using a reduced redundant power processing principle. This converter benefits from a non-complex topology, which aims to process energy more efficiently. The switching regulator can be used on-board in hybrid electric vehicles and has a non-pulsating input current, which is suitable to process energy from lithium-ion batteries. Design expressions and steady-state operating conditions are given for the converter. Models are obtained to design and implement a two-loop controller. The simplicity of this approach is of significant value in a method of design-oriented analysis, in which the analytic results can be used to make design choices. Loop-shaping techniques are used to design a robust controller to regulate the output voltage of the proposed converter under voltage variations on the lithium-ion batteries and the changes in load current requirements, as well as parameter uncertainties of the converter. The design conditions for the gains of the controller are derived. The models of the converter are verified through experimental results for a 300 W prototype and used to design a robust controller. Finally, closed-loop time and frequency domain tests are given to show the performance of the switching regulator.

show abstract

“…The current regulation of the LED lamp is found to be good with sliding-mode current controller compared to the average current mode controller. [97][98][99] However, efficiency enhancement techniques are to be employed for this topology. [10][11][12] Table 5 shows the comparison of the above discussed topologies in terms of number of power components, frequency of operation, power rating and efficiency.…”

Section: High Efficiency Single Switch Quadratic Buck Converter Formentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Efficieny analysis of Quadratic buck converter for LED lamp driver applications

Cited by 8 publications

References 7 publications

Fourth-Order Quadratic Buck Converter Controller Design

Fourth-Order Quadratic Buck Converter Controller Design

Control Scheme for a Quadratic-Based Step-Down On-Board DC/DC Converter to Be Used in Hybrid Electric Vehicles

An overview of energy efficient solid state LED driver topologies

Contact Info

Product

Resources

About