The Dynamic and Optimized Modeling Method of Secondary Winding for Transformer

[摘要] In order to analyze dynamic characteristics of secondary winding for Transformer, one joint interface dynamic modeling and optimized methodology is provided in this paper. A layer of equivalent material between secondary winding and clamp is established, which can simulate stiffness and damp in the joint interface. The initial elastic modulus, poisson ratio and density of equivalent material are deduced from Hertz contact theory and fractal theory. The final property parameters of equivalent material are obtained by using optimized model. Simulation and experiments results show that the dynamic and optimized model can simulate experimental results exactly. The relative errors between the simulation frequencies of new model and experimental frequencies are controlled within 2%.

[发布机构] Northwest Institute of Nuclear Technology, Xi'an, Shaanxi; 710024, China^1

[效力级别] 无线电电子学

[关键词] Dynamic characteristics;Experimental frequencies;Initial elastic modulus;Joint interfaces;Optimized methodologies;Optimized models;Secondary windings;Transformer