A GWO Implementation for Free FEM++ and Its Utilization in Optimization of Roebel Cable for SFCL Applications

Tarun Shrivastava, Dr.S.C. Gupta and Dr.A.M. Shandilya

Applications for high-temperature superconductors (HTS) have achieved mature status, with several commercial applications these devices are working around the world. To maintain the development pace, computational tools capable of simulating and optimizing their behavior have become essential tools for predicting and improving their design performance. In this paper, freely available FEM (Finite Element Method) software Free Fem++ is used to design and evaluate Roebel cable under self-field and then a GWO (Gray Wolf optimization) technique is used to obtain Roebel cable design parameters unique to SFCL requirements. The Free FEM++ an open-source framework is used for developing, simulating and optimizing the FEM model, then MATLAB is used to plot data as it has better plotting capabilities. Our main contribution in this work is the integration of the GWO algorithm with the FEM in the Free FEM++ environment. The GWO is a metaheuristic optimization algorithm that is easy to implement, computationally efficient, easy to tune, and faster convergence. These unique properties make it suitable for any kind of optimization problem. Comparing the simulated and experimental values of critical currents ( ) for , and Roebel cables validates the existing model. Validation confirms that the model is highly accurate and has only of variation comparison to experimental values. Finally, for various combinations of design variables are used to optimize the Roebel cable for HVDC SFCL specific requirement

Volume 12 | 05-Special Issue

Pages: 308-321

DOI: 10.5373/JARDCS/V12SP5/20201763