Based on the use of finite element method(FEM) software ANSYS in electromagnetism, the electromagnetic processing of single winding 2D transformer and double winding 3D transformer are analyzed fully. Two examples, wh...Based on the use of finite element method(FEM) software ANSYS in electromagnetism, the electromagnetic processing of single winding 2D transformer and double winding 3D transformer are analyzed fully. Two examples, which are 2D static field and constant magnetic field, illustrate that the symbolization color vector pictures and curves obtained by ANSYS are not to achieve with other FEM softwares developed by individuals. For a transformer, the forces born by each winding pie and even each turn are analyzed separately under the conditions of unloading, normal load and short circuit. Especially under the condition of short circuit, there are pushing, pressing, suspending and vibrating between winding turns, and then the total winding is probably damaged. Therefore, the detail results give a basis to further fault diagnosis.展开更多
文摘Based on the use of finite element method(FEM) software ANSYS in electromagnetism, the electromagnetic processing of single winding 2D transformer and double winding 3D transformer are analyzed fully. Two examples, which are 2D static field and constant magnetic field, illustrate that the symbolization color vector pictures and curves obtained by ANSYS are not to achieve with other FEM softwares developed by individuals. For a transformer, the forces born by each winding pie and even each turn are analyzed separately under the conditions of unloading, normal load and short circuit. Especially under the condition of short circuit, there are pushing, pressing, suspending and vibrating between winding turns, and then the total winding is probably damaged. Therefore, the detail results give a basis to further fault diagnosis.
