چكيده به لاتين
Thermal losses in electric machines lead to heat generation and temperature rise in various components, which in turn reduces the machine's lifespan and sometimes causes failure. The increase in temperature can damage the winding insulation, resulting in unauthorized thermal stresses, decreased efficiency, and other issues. Thermal analysis is crucial for improving the reliability and optimizing the performance of electric motors. Due to the sensitivity of different motor parts to temperature, having an accurate thermal model for motors is essential. Therefore, thermal modeling plays a key role in motor design and optimization.
One of the methods used for thermal analysis, which is also utilized in this study, is the lumped parameter method. In this method, different parts of the motor are modeled as an equivalent circuit, where the losses are introduced as current sources. By calculating the voltages across the circuit elements, the temperature of each motor component can be determined.
In this research, the thermal analysis of a multi-segment radial flux permanent magnet motor along its axis is examined. The stator structure, rotor, geometric features, flux density, and other characteristics of this motor are described in Chapter 3, and its performance is validated through experimental tests.
To perform the thermal analysis, a model for an induction motor is first developed, and the details of the various components of the model are explained comprehensively. Then, by simplifying the model, a final version is obtained. To validate the results, the proposed model is compared with both software simulations using Motor-CAD and experimental tests, confirming its accuracy.
After validating the proposed model, it is slightly modified in the rotor section and adapted for the hybrid motor under study. The results of this analysis are presented and discussed in Chapter 4.
