Comparison of Inductor Machines With Different Types of Excitation

This work is aimed to the comparison of inductor machines with three different types of excitations: permanent magnets, copper field winding, and high-temperature field winding. Here the results of electromagnetic calculations of considered magnetic system are presented analyzed. We study the distribution of magnetic field in magnetic system of machine and torque characteristics. The presented static characteristics make it possible to evaluate the possibility and efficiency of using the HTS winding as an excitation in an electric machine intended for a flywheel energy storage.