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The influence of emitter layer thickness and interface defect states on the photovoltaic performance of bifacial HIT solar cell was simulated by the program of AMPS-1D developed by the Pennsylvania State University. The simulation results indicate that the conversion efficiency of the solar cell reduces with increasing the emission layer thickness. However, the influence of the emission layer thickness...
This paper propose a genetic based fuzzy logic controller to regulate the speed of separately excited DC motor. The fuzzy membership function and rules are optimized based on genetic algorithm. The DC motor speed control system is modeled and simulated in MATLAB/SIMULINK. Simulation results show that the optimized fuzzy logic controller not only has no overshoot, minimum settling times and vibrations,...
In order to analyze the characteristics of the transcritical CO2 heat pump system with throttle valve, it is necessary to simulate and further to optimize control the system operation. Therefore, the mathematical model for this system is developed in this paper. The simulation values are validated by the test data. The results show that the average error for cooling coefficient of performance (COP)...
Harmonic pollution in power system has become increasingly serious, and we have been aware of the harm of harmonic. In order to restrain harmonic and compensate reactive power, real-time and accurate harmonic detecting is very indispensable. This paper presents the generalized instantaneous reactive power theory and conducts simulation research on three generalized reactive current (harmonic and reactive...
Modeling and simulation is important for the traffic analysis and performance evaluation in communication networks. LEO (low earth orbit) satellite system is so complex and dynamic that it is very difficult to find a mathematical model to describe it. In this paper, a novel modeling framework has been developed for LEO satellite networks by layered approach in a top-down manner. The framework is very...
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