A single-stage LED driver for street-lighting applications with high PF

Cheng, Chun‐An; Chung, Tsung-Yuan; Yang, Fu-Li

doi:10.1109/isie.2013.6563818

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…In addition, the proposed LED streetlight driver economizes four power diodes, two capacitors, and one magnetic component in comparison with the one presented in reference [22]. Furthermore, the proposed LED streetlight driver economizes two power diodes plus one capacitor and one magnetic component in comparison with the ones presented in reference [20,23], respectively. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Some single-stage drivers that use integrated topologies for streetlight applications have been proposed [20,[22][23][24]. A single-stage LED streetlight driver which integrates a dual buck-boost PFC converter with a half-bridge-type LLC resonant converter is proposed in [20], a driver which integrates an interleaved boost PFC converter with a half-bridge LLC resonant converter is presented in [22], a driver which integrates a dual boost AC-DC converter with a half-bridge LLC resonant converter is proposed in [23], and another one that integrates a modified bridgeless PFC converter with a halfbridge LLC resonant converter is presented in reference [24]. In order to reduce component counts in commercial two-stage ( [21]) and existing single-stage LED streetlight drivers ( [20,22,23]), this paper presents a cost-effective driver with features of PFC and digital PWM dimming capability; this driver is capable of operating with American utility-line voltages (100-120 V AC ).…”

Section: Introductionmentioning

confidence: 99%

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A single‐stage LED streetlight driver with PFC and digital PWM dimming capability

Cheng

Chung

2016

Circuit Theory & Apps

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SUMMARYThis paper proposes a single-stage light-emitting diode (LED) driver that offers power-factor correction and digital pulse-width modulation (PWM) dimming capability for streetlight applications. The presented LED streetlight driver integrates an alternating current-direct current (AC-DC) converter with coupled inductors and a half-bridge-type LLC DC-DC resonant converter into a single-stage circuit topology. The sub-circuit of the AC-DC converter with coupled inductors is designed to be operated in discontinuous-conduction mode for achieving input-current shaping. Zero-voltage switching of two active power switches and zerocurrent switching of two output-rectifier diodes in the presented LED driver decrease the switching losses; thus, the circuit efficiency is increased. A prototype driver for powering a 144-W-rated LED streetlight module with input utility-line voltages ranging from 100 to 120 V is implemented and tested. The proposed streetlight driver features cost-effectiveness, high circuit efficiency, high power factor, low levels of inputcurrent harmonics, and a digital PWM dimming capability ranging from 20% to 100% output rated LED power, which is fulfilled by a micro-controller. Satisfying experimental results, including dimming tests, verify the feasibility of the proposed LED streetlight driver.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A single‐stage LED streetlight driver with PFC and digital PWM dimming capability

Cheng

Chung

2016

Circuit Theory & Apps

Self Cite

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“…al. [7] has proposed a single-stage LED driver with interleaving PFC circuit for street-lighting applications. The circuit integrates an interleaved boost PFC converter with a half-bridge-type resonant converter into a single-stage converter.…”

Section: Introductionmentioning

confidence: 99%

Application of Artificial Intelligence in Stimulating Plant Growth Using Electric Lighting

Banerjee,

Ahmad,

Mukherjee

et al. 2024

L&E

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This paper highlights the role of artificial intelligence (AI) in electric lighting for enhancing smart agriculture. The use of electric lighting in greenhouses is widely practiced in the present time, as sunlight is poorly available in some parts of the world. Different plants have different growth in different spectrum of light. The spectrum of light in which the plant grows maximum is coined as optimum growth spectrum (OGS). Hence, this study aims to choose artificial intelligence in assessing the optimum spectrum of light for a given plant. RGB based LEDs are used and its luminous efficacy is interpreted, considering different blend of mechanisms and the yield current and temperature. Rapid light fluctuations offered by pulse amplitude modulation causes a loss in the output of the LEDs. Hence, there lies a finite gap in the light provided and the light reaching the plant. Since, LEDs are the source of light here, hence, light sources complying with higher CRI should be deployed, as used in this experiment. The overall system was so designed such that when a plant is cultivated, using image processing, AI identifies the specific plant and implements all the available data, like the optimum growth spectrum, temperature, humidity, etc. The experiment clearly emphasizes on the results which were impressive. The OGS of the given plant has been figured out and trained the system through AI to execute the growth functions for the given plant.

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“…The method and standardized definition of the concept filled the gap in this field. Cheng et al [10] proposed a novel single-stage, high-power-factor LED driver for street-lighting applications. The device can significantly increase the circuit efficiency, high power factor, and low levels of input current harmonics.…”

mentioning

confidence: 99%

Evaluation on the Efficiency of LED Energy Enterprises in China by Employing the DEA Model

Wang

Zhang

et al. 2021

Mathematics

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As an essential part of strategic emerging industry, the light emitting diode (LED) industry plays an important role in the development of a national economy as well as being a technology that is pivotal to energy saving and environmental protection. Due to the late start of China’s LED energy industry, there are few related studies, especially on the efficiency of China’s LED energy enterprises. The data envelopment analysis (DEA) method is widely used in efficiency measurement for its significant advantages in simplifying calculations and processing multiple input–output indicators. This study selected 34 Chinese LED energy enterprises, sorted out the various input and output indicators of each enterprise from 2017 to 2019, and calculated the technical efficiency, pure technical efficiency, and scale efficiency of each enterprise based on the CCR and BCC models of the DEA method. The result shows that, from 2017 to 2019, the overall technical efficiency of China’s LED energy enterprises continued to improve and that this was due to the LED energy enterprises’ emphasis on technology development. However, in terms of production scale, there is still a big gap between each enterprise and the optimal scale. On the one hand, studying the technical efficiency of China’s LED energy enterprises can measure whether an enterprise has reached the optimal input–output ratio; on the other hand, it can provide references for related stakeholders such as investment entities, regulatory agencies, and policy-making departments.

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A single-stage LED driver for street-lighting applications with high PF

Cited by 10 publications

References 8 publications

A single‐stage LED streetlight driver with PFC and digital PWM dimming capability

A single‐stage LED streetlight driver with PFC and digital PWM dimming capability

Application of Artificial Intelligence in Stimulating Plant Growth Using Electric Lighting

Evaluation on the Efficiency of LED Energy Enterprises in China by Employing the DEA Model

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