Abstract: This paper presents a study for the solution to the problem of stability of the steady state frequency of a generator connected to a load, by using a binary logic control. The active power flowing in the load, influences the machine generated voltage frequency. In the present study, an induction motor has been used as generator machine. To ensure that this frequency remains constant against variation of loads, a ballast load will be used, the power of which is controlled by using a binary logic

• Publication Date: 19-Apr-2015
• DOI: 10.15224/978-1-63248-045-3-42
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Abstract: The modern engineering design process often employs computer simulations to evaluate candidate designs. This setup transforms the design process into an optimization problem which involves a computationally-expensive black-box function, namely, which lacks an analytic expression and where each function evaluation requires large computational resources. An additional challenge in such settings is that simulation runs may consistently fail for some specific candidate designs, but with the reason for failure being unknown. To effectively handle such challenging problems this paper proposes an engineering optimization framework which incorporates a classifier whose goal is to predict if a candidate design is likely to result in a failed simulation run. This prediction is then used to dynamically divert the optimization search away from such designs, without sending them to the simulation. Numerical experiments based on an airfoil optimization problem show the effectiveness of the proposed

• Publication Date: 19-Apr-2015
• DOI: 10.15224/978-1-63248-045-3-43
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• Downloads: 0