What is the elevator energy regeneration system?

The Elevator Energy Regeneration System, also known as the Elevator Energy Feedback System, is an energy-saving technology that recovers regenerative energy generated during elevator operation and feeds it back into the power grid, thereby reducing energy consumption. When the elevator brakes or decelerates, the motor operates in a generator state, and the generated electrical energy is released into the DC circuit capacitors via the inverter. The energy regeneration system feeds this energy back into the power grid, making it available for use by other devices, thus achieving energy-saving benefits.

How does a regenerative elevator work?

Energy Recovery:
During elevator operation, the inverter releases excess electricity to the braking resistor, especially during light-load ascent, heavy-load descent, or deceleration and stopping. Instead of dissipating this waste energy as heat, the energy feedback device recovers it. The device rectifies, inverts, and filters the waste energy, transforming it into new regenerative power.

Grid Feedback:
The system feeds the regenerated power back into the building’s three-phase public power grid for use. This process not only saves electricity but also reduces dependence on and pressure on the external power grid.

Environmental Benefits:
By reducing waste heat, the energy feedback system significantly lowers the temperature in the machine room. This reduction saves costs on cooling equipment and electricity for the machine room. It also decreases the building’s overall energy consumption, aligning with energy-saving and emission-reduction policy goals.

Application of Elevator Energy Regeneration Device

Building managers can apply the Elevator Energy Regeneration Device to various types of elevators, including residential, commercial, and hospital elevators. In practical applications, the regeneration system helps power building systems such as elevator lighting, elevator ventilation, and building illumination.

Additionally, engineers can integrate elevator energy regeneration systems with other green energy sources, such as solar and wind energy, to create a complementary energy system. This synergy enhances overall energy efficiency and supports sustainable building practices.