Entwurf, Modellbildung und Realisierung einer Asynchronmaschine mit Zahnspulenwicklung im Stator und Rotor

The general objective of the present thesis is to take a detailed look at a tooth wound induction machine in the stator and rotor. Special emphasis is placed on the consideration of a multiphase and tooth wound rotor design and its associated advantages.
The starting point for the design and further consideration is the classical analytical machine consideration on the power system. With the help of the resulting air gap values of the magnetomotive force and magnetic flux density as well as the analytical equivalent circuit which uses the electrical terminals of the machine as a reference, the machine behavior is generally modeled on the resulting torque. The length of the active part, which can be significantly greater for a single-tooth winding induction machine if the overall length of the machine is constant, is worked out as an important design criterion. In addition, the connection of the rotor winding, which has a major influence on the resulting torque curve of the machine, is distinguished between a m-phase star connection and a short-circuited toothed coil, and their advantages and disadvantages are worked out.
Referring to the identified analytical machine design, some promising machine designs are calculated in more detail. These machine designs are examined in detail for their torque behavior over speed and torque ripple with the aid of the numerical finite element method. After these detailed calculations, a promising machine design was selected and the design, calculation and realization of a prototype machine were documented in detail. The realized prototype machine is measured at important operating points and the measurement results as well as their deviations from the calculated and simulated values are discussed. In addition, the prototype machine is compared theoretically with two reference machines which have a classic distributed winding design with a squirrel-cage rotor.