A high efficiency autonomous street lighting system based on solar energy and LEDs

Costa, Marco A. Dalla; Costa, Guilherme Holsbach; Santos, Anderson Soares dos; Schuch, Luciano; Pinheiro, J.R.

doi:10.1109/cobep.2009.5347688

Cited by 71 publications

(35 citation statements)

References 6 publications

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“…This allows the sequential separation of the energy flows from the PV source to the battery and from the battery to the LED lighting. As a result, the conventional solution of two cascaded converters [15,16,17] can be combined into a single structure with shared components as shown in Fig. 3a.…”

Section: System Specificationsmentioning

confidence: 99%

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Mira¹,

Knott²,

Andersen³

2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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In locations far from the equator achieving high conversion efficiency in low-power solar systems is challenging due to low solar irradiance levels. This paper presents a high efficiency three-port converter (TPC) for light-to-light (LtL) applications where no direct solar conversion is required. The separation of the power flows allows to replace the conventional solution of two cascaded converters into a single structure with shared components. A loss distribution analysis of the proposed structure is performed, which shows very good match with the experimental results. A prototype of the TPC demonstrates high efficiency in both power flow paths. At low irradiation level, the photovoltaic to battery stage shows a peak efficiency of 99.1 % at at 1.5 W output power and the LED driver stage presents a peak efficiency of 97.3 % at 3 W output power.

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Section: System Specificationsmentioning

confidence: 99%

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Mira¹,

Knott²,

Andersen³

2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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“…6) that can be used as onstage solutions for LED lighting will depend on the input and output voltage values [16]. If the output voltage is higher than the input one, the boost converter [17,18] is the most common and the simplest topology that can be used.…”

Section: One-stage Switching Topologiesmentioning

confidence: 99%

“…9) for this kind of application are the flyback family (isolated SEPIC,Ćuk and Zeta) [22][23][24], the Half-Bridge (HB) (including the asymmetrically driven one) [25][26][27][28][29] and the Push-Pull [16].…”

Section: Examples Of Typical Isolated Topologiesmentioning

confidence: 99%

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An Overview of the AC-DC and DC-DC Converters for LED Lighting Applications

2012

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Original scientific paperHigh-Brightness Light Emitting Diodes (HB-LEDs) are considered the future trend in lighting not only due to their high efficiency and high reliability, but also due to their other outstanding characteristics: chromatic variety, shock and vibration resistance, etc. Nevertheless, they need the development of new power supplies especially designed for boosting and taking advantage of their aforementioned characteristics. Besides, their behaviour is completely different from the rest of lighting devices and, consequently, it should be also taken into account in the design of the converters used to drive them. As a result, many well-known topologies have been optimized or redesigned in order to be used in LED-lighting applications and many new topologies have come up in the recent years with the same purpose.In this paper, the main HB-LED characteristics will be explained, highlighting how they influence the design of their power supplies. After, the main topologies will be presented from the simplest to the most complex ones, analysing their advantages and disadvantages. Key words: AC-DC converters, DC-DC converters, LED, LightingPregled AC-DC i DC-DC pretvarača za primjene u LED rasvjeti. Svjetleće diode s visokom razinom svjetline (HB-LED) smatraju se budućim trendom u rasvjeti zahvaljujući ne samo visokom stupnju efikasnosti i pouzdanosti, nego i njihovim izvanrednim svojstvima: raznolikost boja, otpornost na udarce i vibracije i sl. Ipak, s ciljem potpunog iskorištenja prethodno spomenutih svojstava, potrebno je razviti nove, posebno osmišljene izvore napajanja. Osim toga, ponašanje im se posve razlikuje od ostalih tipova rasvjete što je potrebno uzeti u obzir pri projektiranju pretvarača za njihovo napajanje. Kao posljedica toga, mnoge su poznate topologije pretvarača optimirane ili preoblikovane posebno za primjenu u LED rasvjeti, a zadnjih nekoliko godina mnoge nove su se tek pojavile.U ovomčlanku objašnjena su osnovna HB-LED svojstva naglašavajući njihov utjecaj na razvoj izvora napajanja. Uz to, prikazane su osnovne topologije, od najjednostavnijih do najsloženijih, ujedno analizirajući prednosti i nedostatke pojedinih.

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“…The LED technology is thought as best solution but it offers several edges. Researchers [1][2][3][4] have already thought of this risk, coming up with advanced street lighting system based mostly on LEDs.…”

Section: Introductionmentioning

confidence: 99%

Intelligent wireless street lighting system

Leccese

Leonowicz

2012

2012 11th International Conference on Environment and Electrical Engineering

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Abstract-We propose an innovative wireless street lighting system with optimized management and efficiency. Wireless communication uses ZigBee-based wireless devices which allow more efficient street lamp system management, thanks to an advanced interface and control architecture. It uses many sensors to control and guarantee the optimal system parameters; the information is transferred point-by-point using ZigBee transmitters and receivers and is sent to a control terminal used to check the state of the street lamps and to take appropriate measures in case of failure. The system allows substantial energy savings with increased performance and maintainability.

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A high efficiency autonomous street lighting system based on solar energy and LEDs

Cited by 71 publications

References 6 publications

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

An Overview of the AC-DC and DC-DC Converters for LED Lighting Applications

Intelligent wireless street lighting system

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