Generator being capable of protecting rotating part

PURPOSE: A generator with a rotor protection function is provided to reduce manufacturing costs by preventing the over-specification of an auxiliary armature, a main field magnet, and a bridge diode. CONSTITUTION: An analog signal processor(251) detects the winding temperature, the output voltage, and the output current of an auxiliary armature(21) and a main field magnet(22). A digital signal processor(255) calculates effective values about the winding temperature, the output voltage, and the output current of the auxiliary armature and the main field magnet. The digital signal processor generates the data packet using the winding temperature of the auxiliary armature and the main field magnet.