A Single-Stage High-Power-Factor Light-Emitting Diode (LED) Driver with Coupled Inductors for Streetlight Applications

Cheng, Chun-An; Chang, Chien-Hsuan; Cheng, Hung‐Liang; Tseng, Ching-Hsien; Chung, Tsung-Yuan

doi:10.3390/app7020167

Cited by 10 publications

(13 citation statements)

References 16 publications

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“…Figure 14 shows the transmitter and receiver powers as function of the distance on the 600-600 coil turns. The powers were the multiplication among the voltages, the electric currents and the power factors, where the latest referred to [50] as value of 0.99. As the distance increased, the transmitter power would drop gently.…”

Section: Research Results and Discussionmentioning

confidence: 99%

Design and Investigation of Miniature Solar Cell Source Inductive Wireless Power Transfer on Various Distances, Turns and Loads

Waluyo¹,

Syahrial²,

Yasin³

2018

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The research was to transfer the electric power from a photovoltaic module in wireless utilized magnetic coupling method and an inverter. It was also investigated the waveform characteristics due to various distances, turns and loads. The measurements were performed by using a storage digital oscilloscope, to obtain the voltage magnitudes and harmonics. The results indicated that the receiver voltage magnitudes would decrease drastically, in hyperbolic curves, as the distance increased. The receiver voltage magnitudes would also decrease considerably as the turns reduced, with the average reductions as 0.095 and 0.357 volts, from 600 to 400 and 400 to 200 turn reductions respectively. The THDs in the transmitter voltages were fairly constant, as average of 26.75%. Nevertheless, the receiver voltage THDs would decrease significantly as the distance increased, with decreasing average as 38.09% of the three condition percentage reductions. While, the THDs would reduce considerably as the turns decreased, as 25.28% in average for the 200 to 400, and 400 to 600 turns on one cm of distance. Otherwise, the voltage magnitudes would decrease as the loads increased where from one to five lamp loads, as 0.489, 1.334 and 1.482 volts reductions for 200, 400 and 600 turns respectively. The THDs would decrease slightly as the loads increased, with the average reduction of 5.4% from one to five lamp loads, for the three turn conditions. The receiver voltage magnitudes would increase steep linearly, with the average ratio of one per 9.30 as the transmitter voltage magnitudes increased. While, the THDs of receiver voltages would reduce considerably as the transmitter voltage magnitudes increased, with 8.98% reduction for 1.4 to 5.2 volts of the transmitter voltage magnitudes. The receiver power would reduce more drastically, compared to the voltages, as the distance increased. This case was caused which the powers were influenced by both electric voltage and current. The efficiency would also reduce drastically as the distance increased. Nevertheless, it was gentler than the power, because the early values have already been low. Both parameters were significantly influenced by the coil turns, which the efficiency would be lower as the coil turns reduced. Based on the research results, the maximum transferring efficiency was 0.0615. The efficiency would slightly increase and tended to be saturated toward a certain value as the load increased. Therefore, most likely, in the future, the coil turns should be increased.

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Section: Research Results and Discussionmentioning

confidence: 99%

Design and Investigation of Miniature Solar Cell Source Inductive Wireless Power Transfer on Various Distances, Turns and Loads

Waluyo¹,

Syahrial²,

Yasin³

2018

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“…It is evident that the use of parallel optimization algorithms [43] plays a key role in the optimal design of the lighting system that requires investment and operating costs minimization, as well as uniform light distribution over the plant growing area, accounting for light intensity capability and shading effects [44,45]. In outdoor applications, accurate methods have been developed to test the road lighting effects to ensure a good visibility in the street [46][47][48][49][50].…”

Section: Related Workmentioning

confidence: 99%

Parametric PSpice Circuit of Energy Saving Lamp Emulating Current Waveform

Raciti¹,

Rizzo²,

Susinni³

2019

Applied Sciences

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Energy-saving lamps are equipped with converters enabling high energy efficiency at the cost of injecting very distorted currents on the mains. The problem is more complex in the emerging smart-lighting scenario where these lamps are also used to perform additional tasks. Harmonics mitigation at the lamp level is expensive; consequently, an optimal lighting system design aiming at reducing both costs and current distortion of the whole lighting system is necessary. A tool able to emulate the current drawn from the lamps is necessary for optimal design. Such a tool has also to consider the fluctuations of the voltage on the mains that usually occur throughout the day. In this perspective, a parametric PSpice circuit is proposed and the netlist is reported in this work. Moreover, the simple procedure to be adopted for computing the parameters is also described. The validation has confirmed the ability of the proposed circuit in emulating the current drawn from various CFLs and LED lamps under different supplying voltage.

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“…Chun An Cheng and friends papers present and implement a single-stage high-power-factor light-emitting diode (LED) driver with coupled inductors, suitable for streetlight applications. The presented LED driver integrates an interleaved buck-boost power factor correction (PFC) converter with coupled inductors and a half-bridge-type series-resonant converter cascaded with a full-bridge rectifier into a single-stage power conversion circuit [18,19]. In general, Var generators are classified depending on the technology used in their implementation and the way they are connected to the power system (shunt or series).…”

Section: Introductionmentioning

confidence: 99%

Legal Regulation of Reactive Power Compensation in Energy Efficiency

Oy¹,

Yılmaz²,

Aydın³

2020

Politeknik Dergisi

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In this study, a real energy system is considered. This system has been studied in three stages and its results are emphasized. Firstly, the design and application of a computer and microcontroller based compensation system in the laboratory environment have been realized. In the second step, a software was developed with the C # programming language to be able to control the system centrally and store the data in the desired format. The results of the performed applications are found in different load conditions experimentally and in a simulation program then they are analyzed and compared.

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A Single-Stage High-Power-Factor Light-Emitting Diode (LED) Driver with Coupled Inductors for Streetlight Applications

Cited by 10 publications

References 16 publications

Design and Investigation of Miniature Solar Cell Source Inductive Wireless Power Transfer on Various Distances, Turns and Loads

Design and Investigation of Miniature Solar Cell Source Inductive Wireless Power Transfer on Various Distances, Turns and Loads

Parametric PSpice Circuit of Energy Saving Lamp Emulating Current Waveform

Legal Regulation of Reactive Power Compensation in Energy Efficiency

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