Research on Control Strategy of Super Capacitor Energy Storage System in Traction Elevator

摘要

To improve the overall efficiency of modern building elevator, an active regenerative braking converter using a bidirectional Buck-Boost converter is implemented. The converter is connected in parallel to the inverter DC-bus. Energy is stored in a set of super capacitors during regeneration and it is transferred back to the DC-bus when the elevator accelerates. The control strategy of the storage system with super capacitors is proposed. In order to validate the effectiveness of the proposed method, the simulation model of the elevator system has been built up. Simulation results show that the control strategy can achieve recycling and reuse of regenerative energy in traction elevator.