| 摘要 |
PROBLEM TO BE SOLVED: To secure the operation of an elevator in case of traveling with the power of a blackout storage battery, and to prevent a stop of a car between stories due to the reduction of the storage power of the storage battery. SOLUTION: In case of the regenerative running of an electric motor 5 for driving a car 7, the regenerative power is generated in a direct current side of an inverter 4. A storage battery 13 stores the regenerative power through a two-way power converting device 14, and discharges the power in case of the power running to supply the power to the inverter 14. In case of blackout, the car 7 travels with the power of the storage battery 13. A charge and discharge control device 15 controls so that the storage power of the storage battery 13 becomes larger than the power for making the car 7 travels in case of blackout. |
