Reactor is one of the most important devices in the power system. How to design and optimize such reactors conveniently has been an important topic in the field of academic and engineering. Reactor design theory and finite element theory are combined closely in this paper. As the design specifications and wire gauges is provided by the manufacturer, the initial structural parameters is calculated by using traversal search method. Then the finite element model of the reactor is established according to the above parameters, and by solving its “magnetic-circuit” coupling field, the physical parameters, the design and optimization of the reactor needs is get. Next a new structural dimension is obtained via using the parameters in the neighborhood searching optimization method based on the main constraint condition “equal of layer resistive voltage” and the supplemented one “equal of layer current density”. Eventually, a new finite element model is established by the new structural dimensions. Resolving this model, a whole iterative process is formed completely. While a convergence conditions is set and the process is repeated, an optimal result is obtained. Then, magnetic field and the “thermal-fluid” field are coupled through a bridge of the loss density of each coil. After “thermal-fluid” field solved, the temperature rise of each coil is obtained, by comparing it with the design specifications, therefore the optimal results for the reactor design can be checked. Considering the reconstruction of finite element model, Ansys is used to achieve integrated design optimization. Take two design optimization of reactor as examples, based on the comparison of the calculated results and design targets, the error is within 15%. According to the examples, the iterative algorithm is demonstrated conveniently and practicability.
虞振洋,王世山. 基于有限元模型重构的多物理场耦合空心电抗器优化设计[J]. 电工技术学报, 2015, 30(20): 71-78.
Yu Zhenyang, Wang Shishan. Optimum Design of Dry-Type Air-Core Reactor Based on Coupled Multi-Physics of Reconstructed Finite Element Model. Transactions of China Electrotechnical Society, 2015, 30(20): 71-78.
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