Publications by authors named "Chunliang Mai"
Article Synopsis
- - Accurate parameter identification in photovoltaic (PV) models is crucial for improving the efficiency and control of solar energy systems, but traditional methods struggle with nonlinearity and complex unknowns.
- - The study introduces an Improved Snake Algorithm with Subtraction Average-Based Optimization (ISASO), which enhances parameter identification by increasing accuracy, speeding up convergence, and avoiding local optima through innovative strategies like the Tent chaotic map and adaptive learning factors.
- - Results show that ISASO significantly outperforms existing methods in identifying PV model parameters, highlighted by lower Root Mean Square Error (RMSE) values and validated through various benchmark tests and comparative analyses with other algorithms.
Article Synopsis
- Solar power is crucial for global carbon neutrality, but partial shading challenges the efficiency of photovoltaic (PV) systems due to nonlinear output characteristics.
- This paper introduces a new Maximum Power Point Tracking (MPPT) technique using the Dung Beetle Optimization Algorithm (DBO) to enhance power output under varied weather conditions compared to other established MPPT methods.
- Experimental results show that the DBO technique achieves 99.99% global maximum power point tracking efficiency, with significant improvements in tracking speed, convergence rates, and average power output.
It is well known that welding dissimilar metals can play the advantages and characteristics of those different metals, but it is easy to encounter some problems. In this paper, the thermomechanical behavior of the weldolet-branch dissimilar steel joints in different welding cases is analyzed by establishing a three-dimensional finite element model, and the predicted thermal cycling and residual stresses are verified using experimental tools. The results show that the high temperature area and the heat affected zone on the side of the branch pipe are larger, and there is a large stress gradient at the fusion line on both sides of the weld.
View Article and Find Full Text PDFIn this paper, based on Simufact Welding finite element analysis software, a numerical simulation of the temperature and residual stress distribution of the weldolet-header multi-layer multi-pass welding process is carried out, and the simulation results are verified through experiments. The experimental results are in good agreement with the numerical simulation results, which proves the validity of the numerical simulation results. Through the results of the numerical simulation, the influence of the welding sequence and interlayer temperature on the temperature and residual stress distribution at different locations of the saddle-shaped weld was studied.
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