Design and Implementation of a Digital High-Performance Photovoltaic Lighting System

Hua, Chih‐Chiang; Chuang, Chih-Wei; Wu, Chun-Wei; Chuang, Deng-Jie

doi:10.1109/iciea.2007.4318880

Cited by 12 publications

(12 citation statements)

References 6 publications

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“…The load on the grid can be reduced by using renewable energy resources. Several architectures of an SPV-fed LED street lighting systems (SLS) [3][4][5][6][7] are reported in the literature. It offers more advantages like high luminous efficacy, long life, better color rendering properties, and fast response.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and implementation of soft‐switched bidirectional buck‐boost DC‐DC converter for solar PV‐fed LED street lighting systems

Veeramallu

Porpandiselvi

Narasimharaju

2019

Circuit Theory & Apps

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This paper presents a single-stage solar photovoltaic (SPV) fed light-emitting diode (LED) street lighting system (LED-SLS) using a novel soft-switched buck-boost bidirectional DC-DC converter (BDC). A coupled inductor (CI) based auxiliary circuit is used in the proposed BDC to achieve soft switching, which leads to improved efficiency with reduced ripple. As SPV power is available during day time alone, a battery storage system (BSS) is used. The BSS is charged from SPV during day time through the proposed CI-BDC. The BSS powers the LED-SLS during night time through the same CI-BDC. The proposed CI-BDC provides various advantages like buck/boost operation in either direction of power flow, zero voltage switching (ZVS) soft-switching, use of single magnetic core, high efficiency, reduced ripple in output current, and simple control. Also, it provides an illumination control of the LED-SLS using pulse-width modulation (PWM) dimming. To maintain high efficiency even at light loads, the proposed CI-BDC works as conventional BDC by turning OFF the auxiliary circuit. Thus, avoiding the high conduction losses in it at light loads. The detailed working principle and design analysis are presented along with simulation results. A prototype of 40 W LED lighting system has been developed, and experimental validation is presented. KEYWORDSbidirectional, buck-boost, coupled inductor, LED driver, soft switching 1990

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Section: Introductionmentioning

confidence: 99%

“…It offers more advantages like high luminous efficacy, long life, better color rendering properties, and fast response. A hard switched BDC-based SPV-fed LED lighting system is reported, 7 which results in increased switching losses. Generally, two-stage power conversion is employed for such applications, as shown in Figure 1A.…”

Section: Introductionmentioning

confidence: 99%

Analysis and implementation of soft‐switched bidirectional buck‐boost DC‐DC converter for solar PV‐fed LED street lighting systems

Veeramallu

Porpandiselvi

Narasimharaju

2019

Circuit Theory & Apps

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“…The first stage DC/DC converter is responsible for charging controls and maximum power point tracking (MPPT) [7]; the second stage DC/DC converter is responsible for driving and dimming the output of the high-brightness LEDs (HBLEDs). These systems waste components, so a bidirectional DC/DC converter system has been proposed [8][9][10][11][12][13][14][15][16][17][18][19][20][21]. By contrast, at night, the first stage DC/DC converter does not need to engage in charging functions-rather, the second stage DC/DC converter drives the HBLEDs for lighting functions.…”

Section: Introductionmentioning

confidence: 99%

“…An architecture proposed by Reference [8] integrated a buck-boost converter with a boost converter. This achieves the purpose of sharing components and saved costs.…”

Section: Introductionmentioning

confidence: 99%

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A bidirectional DC/DC converter charge/discharge controller for solar energy illumination system integrating synchronous rectification SEPIC converter and active clamp flyback converter

Huang

2015

Circuit Theory & Apps

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This paper presents a novel bidirectional DC-to-DC converter charge/discharge controller for solar energy illumination system. The bidirectional converter architecture integrates the synchronous rectification Single Ended Primary Inductor Converter (SEPIC) converter and an active clamp flyback converter. In addition to fully use the properties of the shared components and compensate for the shortcomings of conventional two-stage illumination systems, the proposed system has the advantages of soft-switching, simple structure, and high efficiency. During daytime, a SEPIC converter with synchronous rectification function was used to charge the lead acid battery through three-stage charging and maximum power point tracking. At night, the battery discharges, driving and dimming high-brightness LEDs using the active clamp flyback converter. Finally, a solar energy illumination system with both a 160 W charge/discharge controller and an 80 W LED driver was implemented to verify the feasibility and practicality of the proposed system. Figure 5. Operation principles of the synchronous rectification SEPIC converter: (a) operation mode 1, (b) operation mode 2, and (c) operation mode 3. DPDT, double-pole double-throw.Equation 13 describes the step-up mode when D > 0.5 and the step-down mode when D < 0.5. The range of V pv in the currently proposed system is 20-36 V, and the battery output is 24 V. 310 a. Conduction loss:Overall efficiency curve of the synchronous rectification SEPIC converter. Figure 15. V gs1 /V ds1 and V ds2 /V gs2 waveforms of S 1 and S 2 of the active clamp flyback converter. 26. Chen M, Rincon-Mora GA. Accurate electrical battery model capable of predicting runtime and I-V performance. IEEE Transactions on Energy Conversion 2006; 21 (2):504-511. 27. Oh IH. An analysis of current accuracies in peak and hysteretic current controlled power LED drivers.

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Synthesis design of digital solar energy harvesting integrated circuits and systems

2012

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Design and Implementation of a Digital High-Performance Photovoltaic Lighting System

Cited by 12 publications

References 6 publications

Analysis and implementation of soft‐switched bidirectional buck‐boost DC‐DC converter for solar PV‐fed LED street lighting systems

Analysis and implementation of soft‐switched bidirectional buck‐boost DC‐DC converter for solar PV‐fed LED street lighting systems

A bidirectional DC/DC converter charge/discharge controller for solar energy illumination system integrating synchronous rectification SEPIC converter and active clamp flyback converter

Synthesis design of digital solar energy harvesting integrated circuits and systems

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