PMSM Characteristics Comparison of Rheostatic Brake Circuit Differences Targeted for Electric Hybrid Aircraft

In electric hybrid aircraft, it is supposed that configuration of generating power by connecting PMSM as generator to low pressure shaft of turbo fan engine directly. To protect from loss of load by electric equipment trouble, we consider rheostatic brake system using PMSM and resistors. So, we compared that PMSM drive characteristics in brake system between DC chopper and AC semiconductor breaker in actual machine. Brake torque characteristics are affected by current continuity and switching frequency, but we confirmed that AC semiconductor breaker brake system can construct by using suitable switching frequency and choice of breaker parts specs.