Results 1 to 10 of about 333,671 (151)

Evaluation of Non-Uniform Thermal Aging of XLPE Cable Based on Modified Debye Model

Frontiers in Materials, 2022
The polarization/depolarization curve (PDC), which contains abundant insulation information, is widely used to evaluate the insulation condition of the cross-linked polyethylene (XLPE) cables. However, the insulation condition assessing the result of the
Yiyi Zhang, Guangfeng Gu, Jiefeng Liu, Fengyu Jiang, Yufan Fan, Junwei Zha, Junwei Zha   +6 more
doaj   +3 more sources

Gene Evaluation Algorithm for Reconfiguration of Medium and Large Size Photovoltaic Arrays Exhibiting Non-Uniform Aging

Energies, 2020
Aging is known to exert various non-uniform effects on photovoltaic (PV) modules within a PV array that consequently can result in non-uniform operational parameters affecting the individual PV modules, leading to a variable power output of the overall ...
Mohammed Alkahtani, Yihua Hu, Zuyu Wu, Colin Sokol Kuka, Muflih S. Alhammad, Chen Zhang   +5 more
doaj   +3 more sources

An Experimental Investigation on Output Power Enhancement With Offline Reconfiguration for Non-Uniform Aging Photovoltaic Array to Maximise Economic Benefit

IEEE Access, 2021
There are several non-uniform effects on photovoltaic (PV) modules related to aging in a PV array. These subsequently bring about non-uniform operating parameters with individual PV modules, causing a variance in the PV array performance.
Mohammed Alkahtani, Jiafeng Zhou, Yihua Hu, Fahad Alkasmoul, Zeryab Hassan Kiani, Colin Sokol Kuka   +5 more
doaj   +3 more sources

A Reconfiguration Method for Extracting Maximum Power from Non-Uniform Aging Solar Panels

Energies, 2018
Aging affects different photovoltaic (PV) modules in a PV array in a non-uniform way, thereby leading to non-uniform working conditions of the PV modules and resulting in variations in the power outputs of the PV array.
Peter Udenze, Yihua Hu, Huiqing Wen, Xianming Ye, Kai Ni   +4 more
doaj   +3 more sources

Aging phenomena in non-crosslinked polyolefin blend cable insulation material: Electrical treeing and thermal aging

Frontiers in Chemistry, 2022
Non-crosslinked polyolefin blends have become a favorable alternative material to crosslinked polyethylene (XLPE) cable insulation owing to their low power consumption in the production process and good recyclability at the end of service life.
Li Lunzhi, Li Lunzhi, Gao Jinghui, Zhong Lisheng, Zhang Kai, Zhao Xiaohan   +5 more
doaj   +1 more source

A Novel PV Array Reconfiguration Algorithm Approach to Optimising Power Generation across Non-uniformly Aged PV Arrays by merely Repositioning

J, 2020
Photovoltaic (PV) module working conditions lack consistency and PV array power outputs fluctuate due to the non-uniform impact that aging has on various PV modules in a PV array.
Mohammed Alkahtani, Zuyu Wu, Colin Sokol Kuka, Muflah S Alahammad, Kai Ni   +4 more
doaj   +1 more source

Photoelastic stress analysis assisted evaluation of fracture toughness in hydrothermally aged epoxies [PDF]

Fracture and Structural Integrity, 2014
The present work has investigated the fracture toughness of a model DGEBA epoxy system subject to Hidro-Thermal aging. A Photoelastic Stress Analysis technique has been implemented, showing the evolution of stresses arising throughout the water uptake ...
G. Pitarresi , A. Toscano , M. Scafidi , M. Di Filippo , S. Alessi , G. Spadaro   +5 more
doaj   +3 more sources

A modified XY model of transformer oil–paper insulation system including non‐uniform aging and conductance effect

IET Generation, Transmission & Distribution, 2021
The accuracy and feasibility of the traditional XY model of transformer oil–paper insulation system are disputable since it ignored the effect of non‐uniform aging and conductance on dielectric response property.
Xianhao Fan, Jiefeng Liu, Yiyi Zhang, Shichang Yang, Chaohai Zhang, Yubo Zhang   +5 more
doaj   +1 more source

Characterization and prediction of hygrothermally aged CFRP adhesive joint subjected to mode II load

Composites Part C: Open Access, 2023
Carbon fiber composite adhesives joints provide higher specific strength and fatigue life than traditional joints. However, carbon fiber composites and adhesives are polymeric materials that may lose their integrity in hygrothermal environment ...
Mohd. Tauheed, Naresh V. Datla
doaj   +1 more source

Investigating Fourteen Countries to Maximum the Economy Benefit by Using Offline Reconfiguration for Medium Scale PV Array Arrangements

Energies, 2020
Over the past few years, electricity demand has been on the rise. This has resulted in renewable energy resources being used rapidly, considering the shortage as well as the environmental impacts of fossil fuel.
Mohammed Alkahtani, Yihua Hu, Mohammed A Alghaseb, Khaled Elkhayat, Colin Sokol Kuka, Mohamed H Abdelhafez, Abdelhakim Mesloub   +6 more
doaj   +1 more source