PV power system using hybrid converter for LED indictor applications

Tseng, S.-Y.; Wang, Hung-Yuan; Chen, Chien-Chih

doi:10.1016/j.enconman.2013.08.025

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…According to previously specifications and design of the hybrid converter, inductors 2 and and capacitor can be determined. In (17) illustrated in [23], since inductor must be greater than 7.09 uH under = 10 V, = 7 V, and PV = 17 V, 2 is chosen by 40 uH. According to ( 6) and ( 22) illustrated in [23], the magnetizing inductor must be greater than 6.8 uH under = 5, = 7 V, and 2 = 40 uH.…”

Section: Resultsmentioning

confidence: 99%

“…The forward converter with the active clamp circuit recovers the energies stored in magnetizing and leakage inductors of transformer and achieves zero-voltage switch (ZVS) at turn-on transition for switches 1 and 2 . It operational mode can be divided into 9 modes and their Key waveforms are illustrated in Figure 5, since their operational modes are similar to those modes of the conventional converter illustrated in [23]. It is also not described in this paper.…”

Section: Circuit Structure Derivation Of the Proposed Hybrid Convertermentioning

confidence: 99%

“…Since switches and inductors in two converters are integrated with the synchronous switch technique, design of the proposed one must satisfy requirements of each converter. Since design of the active clamp forward converter is illustrated in [23], buckboost converter is only analyzed briefly in the following.…”

Section: Design Of the Proposed Hybrid Convertermentioning

confidence: 99%

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Buck-Boost/Forward Hybrid Converter for PV Energy Conversion Applications

Tseng

Chen²,

Wang³

2014

International Journal of Photoenergy

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This paper presents a charger and LED lighting (discharger) hybrid system with a PV array as its power source for electronic sign indicator applications. The charger adopts buck-boost converter which is operated in constant current mode to charge lead-acid battery and with the perturb and observe method to extract maximum power of PV arrays. Their control algorithms are implemented by microcontroller. Moreover, forward converter with active clamp circuit is operated in voltage regulation condition to drive LED for electronic sign applications. To simplify the circuit structure of the proposed hybrid converter, switches of two converters are integrated with the switch integration technique. With this approach, the proposed hybrid converter has several merits, which are less component counts, lighter weight, smaller size, and higher conversion efficiency. Finally, a prototype of LED driving system under output voltage of 10 V and output power of 20 W has been implemented to verify its feasibility. It is suitable for the electronic sign indicator applications.

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Section: Resultsmentioning

confidence: 99%

Section: Circuit Structure Derivation Of the Proposed Hybrid Convertermentioning

confidence: 99%

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Buck-Boost/Forward Hybrid Converter for PV Energy Conversion Applications

Tseng

Chen²,

Wang³

2014

International Journal of Photoenergy

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“…The conversion efficiencies for PV systems are very low (Tseng et al, 2013). Although various solar tracking systems (Cumpston and Pye, 2014) could be employed to increase the power output, different MPPT algorithms (Liu et al, 2014;Bayod-Rú jula and Cebollero-Abián, 2014;Tsang and Chan, 2013a;Tsang and Chan, 2013b;Tsang et al, 2013;Tang et al, 2013;Tey and Mekhilef, 2014;Chekired et al, 2014) have been developed so that power can be extracted as much as possible from the PV systems.…”

Section: Mppt Based On Triangular Current Waveformmentioning

confidence: 99%

A single switch DC/DC converter with galvanic isolation and input current regulation for photovoltaic systems

Tsang

Chan

2015

Solar Energy

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“…Conventional solar energy illumination systems consist of two-stage power converter architectures [1][2][3][4][5][6]. 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).…”

Section: Introductionmentioning

confidence: 99%

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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PV power system using hybrid converter for LED indictor applications

Cited by 8 publications

References 17 publications

Buck-Boost/Forward Hybrid Converter for PV Energy Conversion Applications

Buck-Boost/Forward Hybrid Converter for PV Energy Conversion Applications

A single switch DC/DC converter with galvanic isolation and input current regulation for photovoltaic systems

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

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