Coil Structures Optimization Method of Iron Core Reactor Based on Electromagnetic-Thermal-Structure Multi-Physical Field Coupling
Yuan Fating1, Lü Kai1, Liu Jianben2, Zhou Bing2, Tang Bo1
1. College of Electrical and New Energy China Three Gorges University Yichang 443002 China; 2. State Key Laboratory of Power Grid Environmental Protection Wuhan 430074 China
Abstract：In this paper, the windings of the core reactor are taken as the research object, and the optimization design is carried out to equalize the electromagnetic, temperature rise and vibration characteristics and improve the utilization rate of metal materials. Firstly, the influence of structural parameters of the reactor winding on the electromagnetic field, temperature rise and vibration is analyzed using the multi-physical field coupling finite element method of electromagnetic field, temperature field and structural field. According to the analysis results, combined with the orthogonal test method, the winding structure is optimized to minimize the number of winding conductors while balancing the electromagnetic, temperature rise and vibration characteristics of the reactor, and the best structural parameters of the core reactor coil are obtained. Then, the performance of the model before and after optimization is compared. The results show that the conductor consumption of the reactor winding after optimization is reduced by 16.8%, and the inductance deviation is only 0.6%, the maximum temperature rise of the coil is reduced by 7.3%, and the vibration displacement of the inner coil is increased by 14.3%. In contrast, the vibration of the outer coil remains unchanged, which meets the requirements of electromagnetic, temperature rise, and vibration.
2022, Vol. 37 
