| 초록 |
Accident in the elevator is increasing due to earthquake and electric power problems during the domestic elevator critical accidents, which is enough to prevent accidents. . In this study, The PWM design using the power conversion element made it possible to achieve the efficiency of over 95%, minimizing mechanical vibration and noise. It is used as a lithium battery instead of a conventional lead battery, the replacement cycle has been increased from one year to five years, and it is lighter and simpler to install. It is Onboard system design increases safety and It is reduce failure rate with power conversion element. It is possible to establish the vibration detection standard to prevent the accidental suspension of the elevator due to the earthquake, and the reliability and durability evaluation of the ARD can be performed. It is expected to be used in various ways not only in elevators but also in escalators and construction equipment. |
