Abstract
The aim of the present study is to develop a motor-generator that fits into a microturbine generator (MTG) system with a power density of 500 W class considering the DC load. The performance evaluation of the motor-generator is performed by back-to-back tests according to AC and DC load to evaluate the power generating characteristics. The power generating characteristics simulation is compared with the experimental results. The analysis results are in accord with the experiment results considering AC and DC loads. The slot model is determined by several characteristics, such as size constraint and the mechanical and electrical performance results between slot and slotless models.