Transient thermal analysis of the conical rotor motor using LPTN and Finite Volume Method

Abstract

Lumped parameter thermal network (LPTN) is widely used for calculation the temperature rise in electrical machines. In LPTN models, heat transfer process in the motor are abstracted form a thermal point of view and can be described via equivalent circuit diagrams, the thermal capacity is modeled by means of a capacitor, as used for describing electric circuits. Compared to the numerical method such as Finite-Element Method (FEM) and Finite-Volume Method (FVM), lumped parameter modeling requires less calculation time and easy to parameter optimization, especially for 3D modeling and dynamic simulation.