High speed permanent magnet motor with powder magnetic core

The advantages of application soft magnetic composites in electrical machines have been discussed. The experimental setup for testing the performance of high speed electrical machines has been elaborated and described. According to obtained preliminary results it can be noticed that the efficiency of full drive system (BLDC controller and the HSPM motor) is rather high. Therefore it can be concluded that SMC technology can be an high efficiency alternative for high speed electrical machines working at frequency above 400 Hz. Nevertheless the final prove will be the comparison of drives with SMC and classical laminated core machines in the same conditions (controller and load). The future work will be focused on comparison of performance of both motors prototypes - with SMC and classical laminated steel core working in different operation modes. Those investigations are in progress and will be described and presented in the future publications of the authors.