Design And Optimization Of Electrical Motors Based On Finite Element Analysis Of Temperature And Structure

Depending on the development of computer and finite element technology, finite element method (FEM) is widely applied in many complex engineering problems. The heat and structure analysis are important aspects in the design and optimization of electrical motors. FEM is used in solving temperature field and stress distribution for the purpose of achieving reasonable, reliable design and optimization and also safe operation.In this paper, three-dimensional solid modeling technology and SolidWorks are applied in motor modeling. Models of two dimensional-bending embedded shape memory alloy actuator (ESMAA) structures with different sizes have been built. Furthermore, the equivalent finite element models of generator stator bars and waterflow are developed.Subsequently, new structure with a central hole is developed instead of old structure, and steady-state and transient temperature analysis have been taken in comparing the two structures of ESMAA models. The temperature distribution of ESMAA models is derived, and the new structure is proved better. Furthermore, static analysis of ESMAA with new structure has been done, and distribution of displacement, stress and strain is derived. Thus, research on bending degrees of models, which have different sizes of the wires, rod and central hole, has been completed, and ultimate design parameters are determined.Finally, ANSYS CFX is used for temperature analysis in the waterflow model. The control standard on the outlet temperature can be achieved.The research proved that FEM plays an important role in design and optimization of electrical motors.