Return period of energy storage elevator

How to recover energy from elevator systems?

Energy recovery from elevators’ systems is proposed. Energy storage using supercapacitors and lithium-ion batteries is implemented. Bidirectional power flow is controlled to use the stored energy as auxiliary supply to the load without exchanging with the grid. Emergency energy level is maintained and used in automatic rescue situation.

Can regenerative energy from elevators be used to achieve a zero energy building?

8. Conclusions In this paper, a hybrid energy storage system (HESS) including battery energy storage (BES) and ultracapacitor energy storage (UCES) has been proposed in order to use the regenerative energy from elevators to get closer to achieving a nearly zero energy building.

Why is energy recovery important in elevators & auxiliary power supply systems?

Energy recovery in elevators’ systems is vital to achieve higher efficiency. Leaps in power electronics industry enables complex and tight control algorithms for energy recovery and harvesting. Energy recovery and auxiliary power supply system is proposed and analyzed in this manuscript.

Can energy efficient elevator systems save energy?

Both proposed systems offered emergency rescue features in addition to storing the regenerated energy from the elevator. Savings up to 20% of consumed energy in an “already” energy efficient elevator system is achieved through the proposed power sharing control strategy.

What is the control strategy of a regenerative energy elevator?

The control strategy of this study includes two main parts. In the first stage, an indirect field-oriented control strategy is implemented to provide new features and flexibility to the system and take benefit of the regenerative energy received from the elevator’s motor.

How regenerative energy can be stored in electric machines?

In the first step, the drive system of the electric machines with energy recovery capability was simulated in MATLAB Simulink. The simulation shows that by designing a suitable control system, a significant part of the regenerative energy can be stored via the ESS in the elevator’s generating mode.