Research on Intelligent Controller of Solar Lighting System

2012 ◽  
Vol 220-223 ◽  
pp. 1138-1141
Author(s):  
Xing Qiao Liu ◽  
Yan Chen
Keyword(s):  
Control Circuit ◽  
Lighting System ◽  
Battery Charge ◽  
Intelligent Controller ◽  
Solar Lighting ◽  
Working Principle ◽  
Protection Circuit ◽  
Battery Discharge ◽  
Vrla Battery ◽  
Lead Acid

After discussing the charging and discharging characteristics of valve regulated lead acid(VRLA) battery, we described the working principle of UC3906. Then designed the controller of 12V battery charge circuit, 12V battery discharge protection circuit and lamp detection control circuit. This controller achieved automatic switch of lighting system, it could efficiently charge the battery and avoid over-charge or over-discharge. The result showed that this controller extend the life of the battery.

Study on Solar LED Lighting System

2013 ◽  
Vol 373-375 ◽  
pp. 2053-2056
Author(s):  
Yu Chuan Jiang ◽  
Yi Si Tang ◽  
Gang Lin Hu
Keyword(s):  
High Efficiency ◽  
Lighting System ◽  
Led Lighting ◽  
Battery Charge ◽  
Charge Control ◽  
Battery Capacity ◽  
Outdoor Experiment ◽  
Full Capacity ◽  
Power Point ◽  
Battery Discharge

The present study developed a high-efficiency charge/discharge controller for stand-alone solar LED lighting system by incorporating an nMPPO (near-maximum-power-point-operation) design, a PWM battery charge control, and a PWM battery discharge control to drive the LED. A battery charge control system using PWM technique with feedback control is developed in the present study to charge the battery in full capacity. The daily outdoor experiment shows the battery capacity can be charged 9.7% more after the overcharge point.

The Intelligent Control for the Battery Charge in the Solar Lighting System

2012 ◽  
Vol 512-515 ◽  
pp. 298-302
Author(s):  
Xia Li ◽  
Zhao Xiang Zeng
Keyword(s):  
Solar Energy ◽  
Intelligent Control ◽  
Constant Voltage ◽  
Lighting System ◽  
Battery Charging ◽  
Battery Charge ◽  
Solar Battery ◽  
Solar Lighting ◽  
Tracking Technology

This paper gives the description of the scheme of solar energy lighting system. In the stated scheme, constant voltage tracking technology is used to complete the solar battery charging. The intelligent charging technology is used to implement over-current protection, over-voltage protection, and over-temperature protection.

Design of Detection Device for Solar Photovoltaic Lighting System Charge-Discharge Performance

2011 ◽  
Vol 383-390 ◽  
pp. 430-434
Author(s):  
Yong Qing Wang ◽  
Pan Pan Huang ◽  
Rong Xia Sun
Keyword(s):  
Solar Cells ◽  
Data Acquisition ◽  
Solar Photovoltaic ◽  
Lighting System ◽  
Discharge Performance ◽  
Battery Charge ◽  
Instantaneous Power ◽  
Terminal Voltage ◽  
Battery Discharge ◽  
Charge Discharge

Based on virtual instrument technology the detection device of solar photovoltaic lighting system charge-discharge performance is designed, which can test eight parameters of solar cells power amp hours, battery charging amp hours, battery discharge amp hours, instantaneous power of solar cells power generation, instantaneous power of battery charge and discharge etc. The LabVIEW program controls data acquisition card, which realizes real-time data acquisition, display and storage etc. The parameters of the solar cells terminal voltage, the solar cells output current, the battery terminal voltage, the battery charge current and battery discharge current are tested. It contributes to the research of best match for solar cells and LED electrical properties, and provides technical parameters for battery reasonable using and battery life extended, and maximizes the performance of solar photovoltaic lighting system.

scholarly journals Constructing Accurate Equivalent Electrical Circuit Models of Lithium Iron Phosphate and Lead–Acid Battery Cells for Solar Home System Applications

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2305 ◽  
Author(s):  
Yunhe Yu ◽  
Nishant Narayan ◽  
Victor Vega-Garita ◽  
Jelena Popovic-Gerber ◽  
Zian Qin ◽  
...  
Keyword(s):  
Lithium Iron Phosphate ◽  
Electrical Circuit ◽  
Design Stage ◽  
Model Parameters ◽  
Equivalent Electrical Circuit ◽  
Cell Level ◽  
Electrical Equivalent Circuit ◽  
Battery Model ◽  
Vrla Battery ◽  
Lead Acid

The past few years have seen strong growth of solar-based off-grid energy solutions such as Solar Home Systems (SHS) as a means to ameliorate the grave problem of energy poverty. Battery storage is an essential component of SHS. An accurate battery model can play a vital role in SHS design. Knowing the dynamic behaviour of the battery is important for the battery sizing and estimating the battery behaviour for the chosen application at the system design stage. In this paper, an accurate cell level dynamic battery model based on the electrical equivalent circuit is constructed for two battery technologies: the valve regulated lead–acid (VRLA) battery and the LiFePO 4 (LFP) battery. Series of experiments were performed to obtain the relevant model parameters. This model is built for low C-rate applications (lower than 0.5 C-rate) as expected in SHS. The model considers the non-linear relation between the state of charge ( S O C ) and open circuit voltage ( V OC ) for both technologies. Additionally, the equivalent electrical circuit model for the VRLA battery was improved by including a 2nd order RC pair. The simulated model differs from the experimentally obtained result by less than 2%. This cell level battery model can be potentially scaled to battery pack level with flexible capacity, making the dynamic battery model a useful tool in SHS design.

scholarly journals Evaluation of a large dish-type concentrator solar lighting system for underground car park

2018 ◽  
Vol 42 (6) ◽  
pp. 2234-2245 ◽  
Author(s):  
Duofu Song ◽  
Hui Lv ◽  
Jun Liao ◽  
Wenjuan Huang ◽  
Sihao Huang ◽  
...  
Keyword(s):  
Lighting System ◽  
Car Park ◽  
Solar Lighting

Pressure-Tolerant Electronics and Discharge Performance of Pressure-Compensated Lead Acid Batteries Under Hyperbaric Conditions

2018 ◽  
Vol 52 (5) ◽  
pp. 110-117 ◽  
Author(s):  
Billavara Omaiah Vishwanath ◽  
Narayanaswamy Vedachalam ◽  
Panayan Muthuvel ◽  
Kannaiyah Jayanthi ◽  
Gidugu Ananda Ramadass
Keyword(s):  
Deep Ocean ◽  
Ambient Conditions ◽  
Hyperbaric Chamber ◽  
Discharge Performance ◽  
Terminal Voltage ◽  
Reliable Design ◽  
Glass Mat ◽  
Vrla Battery ◽  
Hyperbaric Conditions ◽  
Lead Acid

AbstractUnderstanding the variations in the energy discharge performance of pressure-compensated valve-regulated lead acid (PC VRLA) batteries under the influence of increased hydrostatic pressure is essential for the reliable design of deep-ocean battery-powered systems. The paper reviews developments in the field of pressure-tolerant electronics and presents observations from the experiments done on a12 V‐40 Ah absorbent glass mat type PC VRLA battery in a hyperbaric chamber at 600 bar pressure. It is identified that, during discharge at 600 bar pressure, the terminal voltage and energy discharge capacity of a 12-V fully charged battery drop by 1.05 V and about 15%, respectively, and need to be discharged below the minimum voltage levels recommended under normal ambient conditions. The identified results, along with the temperature derating factor, could be used for sizing of deep-ocean operated PC VRLA batteries.

Closed loop control on battery charge regulator lead-acid using switching technique

2019 ◽  
Author(s):  
Abid Alim Mustaqim ◽  
Augustinus Sujono ◽  
Feri Adriyanto
Keyword(s):  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control ◽  
Battery Charge ◽  
Lead Acid
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