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This paper evaluates the use of a Photo Voltaic (PV) parameter estimation method based on implicit optimization algorithms and its use in power controller strategies by explicit model representation obtained with First and Second Order Approximation Models (FOAM, SOAM). An explicit function linking voltage, current and power of PV) cells is presented using the parameters obtained during the implicit...
Estimation of the parameters of a transformer ladder network model based on the measured impedance frequency response (IFR) faces major challenges. Nonlinear nature of the system, mutual interaction, frequency dependency of the elements and the number of parameters are those that make the accurate and valid model estimation task involved. In this respect, based on the transformer physical insight,...
Genetic adaptive A-Star searching algorithm for optimizing the running profile of a train in a trip under certain constraints is studied. The train trip profile optimization problem is formulated as a multi-constraints nonlinear optimization problem, and the corresponding use of A-Star searching algorithm is introduced. NSGA-II is employed for the adaptive parameters selection of A-Star searching...
To improve dredging efficiency and expand transportation, trailing suction dredger with shuttle barge moored at one side is applied in long distance reclamation projects. Line arrangement and line tension estimation method is established for prototype testing of this new technique. The variation rule of line tension in different operation stage is studied and a program working on optimal relative...
Frame structure is a common structure of multi-story and high-rise buildings; research on columnpsilas reasonable linear stiffness ratio is an important aspect on frame structure optimization design. The thesis researches on reasonable linear stiffness ratio when the frame beam-columnpsilas lateral displacement stiffness reaches its maximum value based on Lagrange multiplier method structure optimization...
Current mode (CM) scheme provides suitable alternative for the high speed on-chip interconnect signaling. This paper presents a energy-delay optimization methodology for the current-mode (CM) signaling scheme. Optimization for the CM circuits for on-chip interconnects requires a joint optimization of driver and receiver device sizes, as their parameters which affect the energy-delay performance depend...
The dramatic increase in leakage current, coupled with the swell in process variability in nano-scaled CMOS technologies, has become a major issue for future IC design. Moreover, due to the spread of leakage power values, leakage variability cannot be neglected anymore. In this work an accurate analytic estimation and modeling methodology has been developed for logic gates leakage under statistical...
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