Temperature estimation of switched reluctance machines using thermal impulse response technique

Identifying the hot spots in an electrical machine is a critical step in the electromagnetic design process. Failure of this diagnosis can result in significant damages to the machine. However, a detailed thermal analysis of an electric machine can be extremely time consuming. Therefore, a new approach called Thermal Impulse Response (TIR) modelling is proposed to estimate the temperature of various parts in an electric machine. Use of TIR modelling will improve the simulation time significantly. Simulation and experimental results are carried to support the proposed method.