A5004803065- Photovoltaic System Optimization Techniques
- Silicon and Solar Cell Technologies
- Thin-Film Transistor Technologies
- Solar Thermal and Photovoltaic Systems
- Photovoltaic Systems and Sustainability
- Electronic Packaging and Soldering Technologies
- Solar Radiation and Photovoltaics
- solar cell performance optimization
- Silicon Carbide Semiconductor Technologies
- Microgrid Control and Optimization
- Industrial Technology and Control Systems
- Silicon Nanostructures and Photoluminescence
- Multilevel Inverters and Converters
- Smart Grid and Power Systems
- Advanced Algorithms and Applications
- Advanced Sensor and Control Systems
- Vibration and Dynamic Analysis
- Engineering and Test Systems
- Industrial Vision Systems and Defect Detection
- Simulation and Modeling Applications
- Electrical Fault Detection and Protection
- Semiconductor materials and devices
- Structural Analysis of Composite Materials
- Urban Design and Spatial Analysis
- Transport Systems and Technology
Yancheng Institute of Technology
2025
Loughborough University
2009-2023
Renewable Energy Systems (United Kingdom)
2011-2023
Turbo Power Systems (United Kingdom)
2023
Nanjing University of Aeronautics and Astronautics
2021
Liaoning University
2011-2020
Harbin Institute of Technology
2020
Beijing Solar Energy Research Institute
2018
Nanjing University
2018
National Science Library
2007-2013
The electrical ageing of photovoltaic modules during extended damp-heat tests at different stress levels is investigated for three types crystalline silicon with backsheets, encapsulants and cell types. Deploying allows determination an equivalent dose function, which a first step towards lifetime prediction devices. derived humidity used to characterise the degradation power as well that solar cell's circuit parameters calculated from measured current–voltage characteristics. An application...
It is a challenge to grow perovskite films with large crystalline grains and full coverage on the surface of an organic compound film by solution process. Herein, we for first time introduce environmental‐friendly urea into PbI 2 precursor mediate growth crystallization top PEODT:PSS efficient inverted solar cells. This method attains high‐quality large‐size over μm coverage. enables us fabricate cells showing maximum efficiency 18.01% fill factor 82.29% stabilized 17.56%. Infrared...
The degradation of adhesion strength between the back sheet and encapsulant due to moisture penetration has been investigated for commercial crystalline silicon photovoltaic mini-modules. damp-heat tests originating from International Electrotechnical Commission qualification test were carried out at five different temperature relative humidity (RH) conditions (95 °C/85% RH, 85 65 °C/65% RH °C/45% RH). was measured by 90° peel tests, specified time intervals during degradation. Several...
The energy yield delivered by different types of photovoltaic device is a key consideration in the selection appropriate technologies for cheap electricity. currently on market, each have certain strengths and weaknesses when it comes to operating environments. There plethora comparative tests on-going with sometimes contradictory results. This paper investigates behaviour contrasting thin film technologies, specifically a-Si CIGS derivatives, places this analysis into context results...
Encapsulation is a well-known impact factor on the durability of Photovoltaics (PV) modules. Currently there lack understanding relationship between lamination process and module durability. In this paper, effects different parameters encapsulant stability due to stress testing have been investigated from both on-site production quality long-term viewpoints. Rather than focusing single factors, paper evaluates using number indicators including EVA (ethylene-vinyl acetate copolymer) curing...
With the acceleration of urbanization, disposal dewatered sewage sludge (DSS) has become an urgent environmental issue worldwide. Hydrothermal conversion (HC) DSS is important method for sustainable utilization due to its combination efficiency and economic advantages. This study investigates product distribution composition products during HC under subcritical supercritical water conditions (200–450 °C, 5–90 min), with a particular focus on formation mechanisms steroid compounds. The...
China generates a significant amount of dredged sediment annually, much which is contaminated with heavy metals. This study investigates the adsorption Pb(II) from water and using different biochar materials, including BC HC. The results show that maximum by BC-350-2h HC-350-1:2-0.5h was 9.90 mg/g 9.95 mg/g, respectively, efficiencies 99.0% 99.5% for 50 mg/L solution at dosing concentration 5 g/L, under 10 min adsorption. effectively adsorbed sediment, no detectable in liquid fraction after...
Inverters are typically sized based on guidelines. These do not consider the specifics of a maritime climate as seen in UK, i.e. high percentage diffuse irradiance, fast moving weather fronts and smaller variation inter-seasonal module operating temperatures compared to continental climates. The existing UK-guidelines shown be sub-optimal. A more appropriate sizing methodology is presented. first influence considered sampling rate. It that irradiances underestimated hourly models, resulting...
Our work investigates a tunable multilayer composite structure for applications in the area of low-frequency absorption. This acoustic device is comprised three layers, Helmholtz cavity layer, microperforated panel and porous material layer. For simulation experiment our research, absorber can fulfill twofold requirement: absorption coefficient reach near 0.8 very low frequency (400 Hz) range wide (400–3000 Hz). In all its frequency, average over 0.9. Besides, be by scalable cavity. The...
The ability to maintain mechanical properties after applied environmental stress is a good indicator for long term durability of backsheet. This work surveys set 56 backsheet films, some which are known fail in the field and evaluates them utilizing proposed photovoltaic weathering standard IEC 62788-7-2. While complete study examined optical reflectance characterization, tensile testing, dielectric mandrel bend test, this paper focuses on test results. All seven transparent specimens...
In this work, the mechanical properties of encapsulation materials for photovoltaic modules have been studied. A finite element model has developed to simulate degradation solder bonds within subjected different environmental conditions. Various polymeric encapsulants are characterized using constitutive techniques and included in model. It is shown that rates dependent on behavior encapsulant some may cause higher or lower than others depending use-environment.
Outdoor measurement campaigns of PV module performance are normally affected by a relatively large number outliers. The aim this paper is to develop statistically sound approach obtaining dataset that allows one analyse continuously monitored devices for use high volume data measurements. This uses ISC as self-reference parameter measure the incident irradiance on module, which largely eliminates error due differences in spectral and angular response between test reference detector. outlier...
The accuracy of any analysis PV module characteristics measured outdoor is normally affected by the following factors: meteorological conditions experienced during measurements, locations where are installed, different instrumentation used for measuring and recording approaches. Results can also be changed strategies data selection analysis. With aim investigating degradation in modules, performance parameters require a narrow uncertainty needed as typically rate modules less than 1% per...
This paper proposes a novel bidirectional isolated LLC resonant converter to realize wide output voltage range. The proposed overcome the dilemma of conventional between gain and switching frequency It is achieved by two operation configurations when switches configurable structure (CS) adopt different duty cycle. CS beneficial narrow range increase magnetizing inductance that benefits design magnetic components reduces conduction losses, respectively. Meanwhile, doubler modulation (SFDM)...
Adhesion requirements for photovoltaic modules to ensure reliability are often discussed but not well defined, neither in terms of tests nor actual requirements. This paper presents a new approach realistic assessment the adhesion strength, which shows conventional peel test may reliability. The presented reproduces fielded much more closely than commonly used testing. is conducted situ during standard damp-heat at temperature 85 °C and 85% relative humidity, with installed an angle give...
The solder joint degradation due to thermomechanical fatigue is investigated in this paper for photovoltaic (PV) mini-modules with ethylene vinyl acetate (EVA) of different viscoelastic properties. were laminated at curing temperatures order obtain EVA encapsulation influence viscoelasticity on the generated analyzed based a two-dimensional (2D) finite-element model. Based simulation stresses accumulation, cured lower accumulated approximately 40% more during thermal cycle testing than...
A key solution to urban and global sustainability is effective planning of sustainable development, for which geo-techniques especially cellular automata (CA) models can be very informative. However, existing CA simulating though increasingly refined in modeling growth, capture mostly the environmental aspect sustainability. In this study, an adaptable risk-constrained model was developed by incorporating social-ecological risks development. three-dimensional risk assessment framework...
Ethylene vinyl-acetate (EVA) encapsulated crystalline silicon PV modules see encapsulant related degradation such as the hydrolysis of EVA which leads to generation acetic acid that corrodes cells and cell metallisation. The formation discharge in during an extended damp-heat test are studied this work dependence crosslinking degree. To achieve different degrees encapsulation, mini-modules were laminated under curing temperatures. thermogravimetric analysis (TGA) is used estimate vinyl...
The effect of amorphous Silicon (a-Si) module degradation on inverter sizing is investigated in this paper to identify appropriate ratios even if only undegraded data-sheet values are available. seasonal and annealing pattern a-Si modules requires special attention the inverters for these devices, as demonstrated three types with different rates. efficiency depends ratio well DC input voltage. Here data an relatively dependence operating voltage used. As degrade, optimum system rated power...
The accuracy of the characterisation photovoltaic devices may be affected by method extraction performance parameters. This paper investigates potential uncertainties in extracted short circuit current (I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sc</sub> ), open voltage (V xmlns:xlink="http://www.w3.org/1999/xlink">oc</sub> ) and maximum power (P xmlns:xlink="http://www.w3.org/1999/xlink">mpp</sub> from current-voltage (I-V) data a (PV)...