| 摘要 |
PROBLEM TO BE SOLVED: To prevent an overvoltage caused by an induction voltage in the case where a motor is rotated by an external force while an inverter is stopped.SOLUTION: A motor control device comprises a second power source. In the case where a motor is rotated by an external force when a power supply voltage to be supplied from a power source to an inverter driver circuit or an inverter controller is cut off or reduced, the second power source generates a power supply voltage for the inverter driver circuit or the inverter controller from an induction DC voltage which is obtained by rectifying an induction voltage into a DC voltage. Therefore, the supply of the power supply voltage to the inverter driver circuit or the inverter controller is resumed and inverter control generating a braking force to the motor can be performed. |
