An overview of energy efficient solid state LED driver topologies

Yadlapalli, Ravindranath Tagore; Narasipuram, Rajanand Patnaik; Anuradha, K.

doi:10.1002/er.4924

Cited by 21 publications

(7 citation statements)

References 103 publications

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“…The boost converter is prominent for MPPT. QBC is used as a PCU [11,12] whose schematic is shown in Figure 5 along with its voltage conversion ratio represented by Eq. (25).…”

Section: Boost Converter With Mpptmentioning

confidence: 99%

Modeling and Control of Laptop Computer Voltage Regulator Module with Multiple Power Sources

Yadlapalli¹,

Anuradha²

2020

JESA

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This paper presents the modeling and control of Air Breathing Fuel Cell (ABFC) and solar PV based power system for feeding the voltage regulator module of a laptop computer. The MATLAB modeling comprises of power sources as well as power conditioning units (PCUs). The different power sources under consideration are ABFC stack and solar PV module feeding the PCUs. The quadratic buck converter (QBC) and boost converter combination are used as a power conditioning unit (PCU). The average current mode control (ACMC) based QBC enables good steady state and dynamic voltage regulations. The perturb and observe (P&O) algorithm is used for maximum power tracking of solar PV panel. The efficiency analysis of ABFC power system and PV module power system are represented.

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“…The boost converter is prominent for MPPT. QBC is used as a PCU [11,12] whose schematic is shown in Figure 5 along with its voltage conversion ratio represented by Eq. (25).…”

Section: Boost Converter With Mpptmentioning

confidence: 99%

Modeling and Control of Laptop Computer Voltage Regulator Module with Multiple Power Sources

Yadlapalli¹,

Anuradha²

2020

JESA

Self Cite

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“…Given the importance of LED lights in smart greenhouse farming, making the LED driver efficient, will have a significant impact in lowering the total operational cost and increasing the efficiency of the smart farming system [3]- [5]. An LED driver acts as an ac/dc converter that converts the ac grid voltage into dc voltage for powering the LED lights.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of FLL and PLL in Boost PFC Converter Control for Smart Greenhouse Farming Application

Pay,

Christensen,

et al. 2023

2023 IEEE International Conference on Agrosystem Engineering, Technology &Amp; Applications (AGRETA)

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LED lights have become very popular recently for smart farming applications, where they provide artificial light as the substitute for sunlight in a greenhouse or indoor farming environment. To ensure a low total operational cost and improve the efficiency of farming in those environments, it is imperative that the overall LED lighting system is energy efficient. LED is a dc system, whereas the grid is an ac system. As such, an LED driver is needed to perform the necessary voltage conversion. The boost power factor correction (PFC) converter is a popular LED driver that provides output voltage regulation and power factor correction at the same time. As the LED driver is grid-connected, its control system requires real-time estimation of the grid voltage parameter information for reference current generation. In this study, a comparison between frequency-and phase-locked loops as the grid detection method inside the converter control system is provided. For the phase-locked loop (PLL), a single-phase quasi-type-1 structure is considered. It is then compared with the conventional second-order generalised integrator (SOGI)frequency-locked loop (FLL). Comprehensive numerical studies are performed to evaluate the performance of FLL and PLL in challenging grid voltage cases. Results show that the source current has a lower total harmonic distortion when PLL is used as the synchronisation tool over the FLL counterpart. This can be attributed to the use of moving average filter in the PLL, which provides additional harmonic robustness compared to FLL. Lower distortion by the PLL method will the make LED driver, consequently smart farming more energy efficient.

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“…These power supplies, or drivers, are mostly AD-DC systems with Constant Current (CC) outputs that adapt to the quantity and power of the needs of the lamp’s emitters. They have an electrical efficiency of between 85% for low power lamps up to values close to or even higher than 95% [ 15 ]. Thus, the losses of the auxiliary equipment of LED lamps are lower than those needed by the discharge lamps.…”

Section: Introductionmentioning

confidence: 99%

Effect of LED Lighting on Physical Environment and Microenvironment on In Vitro Plant Growth and Morphogenesis: The Need to Standardize Lighting Conditions and Their Description

Barceló-Muñóz

Barceló

Calderón

2021

Plants

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In the last decades, lighting installations in plant tissue culture have generally been renewed or designed based on LED technology. Thanks to this, many different light quality advances are available but, with their massive implementation, the same issue is occurring as in the 1960s with the appearance of the Grolux (Sylvania) fluorescent tubes: there is a lack of a methodological standardization of lighting. This review analyzes the main parameters and variables that must be taken into account in the design of LED-based systems, and how these need to be described and quantified in order to homogenize and standardize the experimental conditions to obtain reproducible and comparable results and conclusions. We have designed an experimental system in which the values of the physical environment and microenvironment conditions and the behavior of plant tissue cultures maintained in cabins illuminated with two lighting designs can be compared. Grolux tubes are compared with a combination of monochromatic LED lamps calibrated to provide a spectral emission, and light irradiance values similar to those generated by the previous discharge lamps, achieving in both cases wide uniformity of radiation conditions on the shelves of the culture cabins. This study can help to understand whether it is possible to use LEDs as one standard lighting source in plant tissue culture without affecting the development of the cultures maintained with the previously regulated protocols in the different laboratories. Finally, the results presented from this caparison indicate how temperature is one of the main factors that is affected by the chosen light source.

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An overview of energy efficient solid state LED driver topologies

Cited by 21 publications

References 103 publications

Modeling and Control of Laptop Computer Voltage Regulator Module with Multiple Power Sources

Modeling and Control of Laptop Computer Voltage Regulator Module with Multiple Power Sources

A Comparative Study of FLL and PLL in Boost PFC Converter Control for Smart Greenhouse Farming Application

Effect of LED Lighting on Physical Environment and Microenvironment on In Vitro Plant Growth and Morphogenesis: The Need to Standardize Lighting Conditions and Their Description

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