The aim of this master's thesis is to develop a dynamic nonlinear model of an alternator with claw poles in the Matlab/Simulink simulation environment. In the introductory part, we present the basics of the machine in question and its construction. Then the key components of the machine, stator, rotor, rectifier and regulator are described in more detail. The purpose of developing such a model is the analysis of operation under different conditions, where we are mainly interested in output voltage, shaft torque and machine efficiency. Therefore, we introduce some simplifications in this work. When developing the dynamic model itself, we are not interested in the exact form of the electrical signals (voltages and currents) inside the alternator, but focus in more detail on the temperature-accurate model. This is meant to describe in more physical detail the heating and cooling of the stator and rotor windings in different operating conditions. The data for the exact model is obtained through measurements of the final temperatures of the stator and rotor windings, measurements of the time constants of temperature changes and the inductance of the windings. From this data we make lookup tables that we use in the final model. The simulation scheme consists of the rotor and stator parts and the input and output parts. The operation of the model is also checked and evaluated based on the test sequence, which is carried out in simulation and on a real machine. We conclude that the model sufficiently describes the operation of a real machine according to its purpose. In the future, the model can be further improved by additional measurements of losses, input voltages and currents and by developing a better regulation part of the model.
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