HH-ESSDL-C3.3C20-D
- The Elevator Energy Storage-Saving Device (ESSDL) adopts a three-phase interleaved parallel BUCK-BOOST bidirectional DC/DC converter as its control core and uses supercapacitors as the energy storage medium.
- On-site wiring is simple: just connect the positive and negative poles of the elevator inverter's DC bus to the ESSDL.
When the elevator is in a generating state (e.g., lightly loaded ascending, heavily loaded descending, or decelerating and stopping), the bus voltage of the inverter rises, and the ESSDL charges, storing the electrical energy generated by the elevator (originally consumed by the brake) in the supercapacitors. When the elevator is in a motoring state (e.g., lightly loaded descending or heavily loaded ascending), the inverter bus voltage drops, and the ESSDL discharges, feeding the stored energy back to the DC bus of the elevator inverter. - With proper selection of the ESSDL based on the elevator's maximum load capacity, operating speed and maximum lifting height, the power saving rate can reach over 45%. Multiple ESSDL units can be used in parallel to increase power and energy storage capacity.
