Transparent back‐junction control in Cu(In,Ga)Se 2 absorber for high‐efficiency, color‐neutral, and semitransparent solar module

A large area and highly stable perovskite solar module (10 cm × 10 cm, active area ∼70 cm2) is demonstrated using low cost processing methods and materials.

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High-Efficiency Solar Power Supply Design

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.605-607.433 ◽

2012 ◽

Vol 605-607 ◽

pp. 433-437

Author(s):

Hong Yang ◽

Wen Qi Huang ◽

Zhen Fei Wang ◽

Long Guang Chen ◽

Yao Yin

Keyword(s):

Experimental Data ◽

Power Supply ◽

High Efficiency ◽

Incident Angle ◽

Tracking System ◽

Fresnel Lens ◽

Solar Panels ◽

Solar Module ◽

Charging System ◽

Voltage Current Characteristic

In order to improve the efficiency of solar module, we have designed the Fresnel lens concentrated system and charging system, their schematic diagrams are depicted detailed in this paper. The experimental data show that adding Fresnel lens parts can improve the solar panels' power from 130% to 200% and incident angle can affect solar panels' voltage current characteristic deeply. All of these results can give some support to design the tracking system.

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A study on problem diagnosis and maintenance guideline of small scale PV system

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.12.11102 ◽

2018 ◽

Vol 7 (2.12) ◽

pp. 105

Author(s):

Hee Chul Kim

Keyword(s):

Power Generation ◽

Monitoring System ◽

High Efficiency ◽

Low Cost ◽

Monitoring Device ◽

Cloud Type ◽

Pv System ◽

Solar Module ◽

Iot Platform ◽

Smoke Sensor

Background/Objectives: Research and development of low-cost, high-efficiency devices that can be installed without replacing existing power generation equipment is promoted early. It is aimed to prevent the damage of property and human life by detecting the fire of PV system. Therefore, it is possible to easily install the device without replacing the solar module The aim is to minimize the damage to people.Methods/Statistical analysis: In order to prepare for the safety accidents of the photovoltaic power generation facilities due to fire and blast, the monitoring system should have the following functions as essential. Measures and analyzes the voltage and current of power generated in each string in the connection board in real time. An alarm is triggered when an abnormality of a specific string is detected or when an abnormal temperature change is detected in the connection panel internal temperature sensor.If the smoke sensor inside the connection panel detects smoke generation and an abnormality such as a fire is caught, the monitoring system immediately generates an alarm.Findings: It provides services such as checking the status of customer power plants, improving power generation efficiency, and recovering quickly in case of a disaster through a monitoring system that supports stable operation of the PV plant and profit generation. By using the existing connection box function as it is, the company minimized the additional cost, and promoted and promoted a low-cost, high-efficiency system.Improvements/Applications: H/W module using temperature and smoke sensor is interlocked with existing connection semi-control system to develop efficient connection monitoring device. In order to link the sensor value with the monitoring system, messages are added and supplemented. For the application of the fail-safe solution, we developed a monitoring device to prevent the escape of the solar module and developed the H / W module using the vibration and loosening sensor. We will develop the solar monitoring system based on cloud type IoT platform by linking the fault recognition and alarm generation function by adding / supplementing the sensor value to link with the monitoring system.As a power station management for cloud type (ASP) service, adoption of oneM2M standard based IoT platform can expand acceptance by monitoring web and mobile based monitoring as well as real time monitoring and fault monitoring of solar power plant.

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A Study on Modular Smart Plant Factory Using Morphological Image Processing

Electronics ◽

10.3390/electronics9101661 ◽

2020 ◽

Vol 9 (10) ◽

pp. 1661

Author(s):

Bong-Hyun Kim ◽

Joon-Ho Cho

Keyword(s):

Image Processing ◽

Control System ◽

Plant Growth ◽

High Efficiency ◽

Control Method ◽

Image Processing Algorithm ◽

Solar Module ◽

Morphological Image Processing ◽

Plant Factory ◽

Morphological Image

This paper is a study on a modular smart plant factory integrating intelligent solar module, LED module with high efficiency for plant growth, IoT module control system and image processing technology. The intelligent sun and modules have a corrugated structure, and the angle of the module can be adjusted to obtain a large amount of power generation. It is fully foldable for wider angles during the day and module protection at night. The LED module is designed and manufactured to distribute energy evenly over the entire wavelength range so that high efficiency can be obtained. The control system with IoT convergence technology enables control of all parts related to plant growth such as angle control of solar modules, LED lighting control, temperature/humidity control, and fan control. In particular, the control method is programmed to be controlled by a computer monitoring system and a smartphone app, so there are few places. In addition, this paper developed an image processing algorithm to extract the growth information of lettuce grown in the plant factory. The acquired images were separated into R, G, and B images using Matlab software. The applied algorithms are k-mean and improved morphological image processing. By applying this method, we can determine the area calculation and shipping of lettuce seedlings. As a result of the fusion and application of solar modules, LED modules, and IoT modules, information on plant growth and status was confirmed.

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The Development of High-Rate Deposition Technology for Microcrystalline Silicon for High-Efficiency a-Si/μc-Si Tandem Solar Module

IEEE Journal of Photovoltaics ◽

10.1109/jphotov.2012.2216857 ◽

2013 ◽

Vol 3 (1) ◽

pp. 35-40 ◽

Cited By ~ 6

Author(s):

Mitsuhiro Matsumoto ◽

Youichirou Aya ◽

Akihiro Kuroda ◽

Hirotaka Katayama ◽

Toshie Kunii ◽

...

Keyword(s):

High Efficiency ◽

High Rate ◽

Microcrystalline Silicon ◽

Solar Module ◽

Deposition Technology

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Quick characterization method of current-matching-status for large area (1.1∗1.3m) high efficiency a-Si/uc-Si tandem solar module

2011 37th IEEE Photovoltaic Specialists Conference ◽

10.1109/pvsc.2011.6186403 ◽

2011 ◽

Author(s):

Chuang Kai-Hsiang ◽

Chih-Hsiung Lin ◽

Kun-Chih Lin ◽

Chin-Yao Tsai

Keyword(s):

High Efficiency ◽

Large Area ◽

Solar Module ◽

Current Matching

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Lifetime Simulation of Rechargeable Batteries for Solar Powered Fishing Lights

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.848.115 ◽

2016 ◽

Vol 848 ◽

pp. 115-118

Author(s):

Gunther Bohn ◽

Sven Bayer ◽

M. Stolz ◽

Ansgar Ackva ◽

Bernhard Arndt

Keyword(s):

High Efficiency ◽

Lithium Iron Phosphate ◽

Lifetime Cost ◽

Operating Cost ◽

Lithium Ion ◽

Iron Phosphate ◽

Rechargeable Batteries ◽

Solar Module ◽

Solar Powered ◽

Battery Technology

In the developing world artisanal fishermen use kerosene lanterns for night fishing. Solar powered fishing lights became an ecologic and economic alternative to the kerosene lanterns due to the development of high efficiency LED light sources and low price solar cells. In the last years several solar fishing light systems were developed. The choice of the battery technology influences the reliability and the operating cost of the fishing light, because the battery has the lowest lifetime of all components of the fishing light.In this paper we describe the results of a battery simulation over 5 years time: The battery is daily charged by a solar module and discharged by night fishing. The meteorological irradiation data of Tanzania are used. Different battery technologies (Lead Acid, Lithium-Ion, Lithium-Iron-Phosphate) are tried out.The results of the simulation are the battery lifetime, cost and waste mass per year dependent on the battery technology. The study shows, that the Lithium-Iron-Phosphate technology is the best choice in terms of these factors and to the advantage of the poverty-stricken fishermen at the Victoria Lake in Tanzania and the environment.

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Design and Analysis of the Performance of a Solar Driven Micro-Inverter Using Single Ended Primary Inductance Converter Topology

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2019.7764 ◽

2019 ◽

Vol 16 (2) ◽

pp. 529-536

Author(s):

G. Radhakrishnan ◽

Sheeba S. Rani ◽

K. C. Ramya ◽

Maideen Abdul Kadher A. Jeylani ◽

V. Gomathy

Keyword(s):

High Efficiency ◽

Input Voltage ◽

Voltage Regulation ◽

Solar Module ◽

Voltage Range ◽

Current Switching ◽

Resonant Inverter ◽

Converter Topology ◽

Inverter Topology ◽

Micro Inverter

In typical solar power installations, multiple modules are connected to the grid through a single high-power inverter. However, an alternative approach is to connect each solar module directly to the grid through a micro-inverter. This approach makes the system robust to single module failures and results in better power tracking. PV based cower conditioning system need a high-efficiency dc–dc converter capable of regulation over a wide input voltage range for Maximum Power Point Tracking (MPPT) and a high-efficiency micro-inverter. To diminish the ground leakage currents, also to use a high-efficiency system, the proposed concept is required for this micro-inverter to provide galvanic isolation between the PV module and the inverter. This concept involves the design of a micro-inverter topology which includes design of Single Ended Primary Inductance Converter (SEPIC) dc/dc converter, isolated resonant inverter and a cyclo-converter. The SEPIC converter topology yields high efficiency through constant voltage MPPT algorithm. The Resonant inverter topology produces efficient output through low circulating currents, Zero Voltage Switching (ZVS), low-current switching of the primary side devices, and Zero Current Switching (ZCS) of the output diodes. This Resonant inverter topology is also able to provide voltage regulation through basic fixed-frequency Pulse Width Modulated (PWM) control. The features of proposed system can able to achieve w the simple addition of a secondary-side bidirectional ac switch to the isolated series resonant converter.

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