Structure Parameters Optimization of the Rain Cover and Ventilation Duct of Dry Air Core Reactor under the Forced Air Cooling Condition

In this paper, the three-dimensional fluid field-temperature field coupled model of air core reactor is established, the detailed temperature field distributions of reactor can be obtained, and the reason about the temperature rise of reactor is significant increased when adding the rain cover is given by analyzing the flow velocity of fluid in the air ducts. Considering the natural air cooling no longer meets the temperature rise requirement of the reactor, the forced air cooling is performed by installing ventilation duct and fan at the bottom of the reactor, combined with the finite element method and central composite experimental design method (CCD), the influence of structure parameters of rain cover and ventilation duct on the temperature rise of reactor are analyzed, meanwhile, the response surface model is established, which reflects the relationship between the temperature of reactor and the structure parameter of rain cover and ventilation duct, and the optimal design parameters can be obtained based on the quantum genetic algorithm, the maximum temperature of the reactor is only 59.3 degrees C, the difference between the prediction of response surface and simulation result is only 0.1 degrees C, and the correctness of the optimization method is validated, which provides an important guiding significance for the safe and stable operation of reactor in the system. (c) 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.