A self-adaptive differential evolution algorithm incorporate Pareto dominance to solve multi-objective optimization problems is presented. The proposed approach adopts an external elitist archive to retain non-dominated solutions found during the evolutionary process. In order to preserve the diversity of Pareto optimality, a crowding entropy diversity measure tactic is proposed. The crowding entropy strategy is able to measure the crowding degree of the solutions more accurately. The experiments were performed using eighteen benchmark test functions. The experiment results show that, compared with three other multi-objective optimization evolutionary algorithms, the proposed MOSADE is able to find better spread of solutions with better convergence to the Pareto front and preserve the diversity of Pareto optimal solutions more efficiently.
To simulate solar cell systems or to optimize photovoltaic (PV) system performance, the estimation of solar cell model parameters is extremely crucial. In this paper, the parameter extraction of solar cell models is formalized as a multi-dimensional optimization problem, and an objective function is established minimizing the errors between the estimated and measured data. A novel chaotic asexual reproduction optimization (CARO) using chaotic sequence for global search is applied to this parameter extraction problem. All the seven or five parameters of solar cell models are extracted simultaneously using measured input-output data. The CARO has been tested with different solar cell models, i.e., double diode, single diode, and PV module. Comparison simulation results with other parameter extraction techniques show that the CARO signifies its potential as another optional method.
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