STARTING METHOD AND STARTER FOR MOTOR

PURPOSE:To eliminate the rise of the output power of a generator over the rated output by feeding back the current flowed to a motor and the power which is inputted to the motor to an automatic voltage regulator of the generator. CONSTITUTION:An automatic voltage regulator 12 controls to fire a thyristor 9 so that the deviation between the output voltage and the reference voltage of a generator 2 becomes small, thereby maintaining the output voltage of the generator 2 constant. On the other hand, the current which is flowed to the motor 6 which is detected by a current transformer 14 is inputted to the regulator 12 through a current setting variable resistor 16 and the input power amount of the motor 6 detected by a power amount converter 18 is inputted to the regulator 12 through a power setting variable resistor 19, thereby regulating so that the current inputted to the motor 6 does not flow more than the prescribed value and the power amount inputted to the motor 6 does not become more than the prescribed value. In this manner, the stoppage of a prime mover can be prevented.