Welcome to LiftEnergy+ website. Don’t forget to check out the explainer video on the home page
Welcome to LiftEnergy+ website. Don’t forget to check out the explainer video on the home page
In a typical lift, the car is counter weighted. When the car goes up the counterweight goes down and vice versa.
When the car goes down more than about half loaded, it weighs more than the counterweight and it goes down by the effect of gravity. In this scenario, the motor is acting as a generator taking the mechanical power caused by gravity and converting into electrical energy.
Conversely when the lift is more than about half empty, the counterweight is heavier than the car. So, when the car goes up the counterweight goes down under gravity, again energy in generated though the motor.
If the lift is fitted with super capacitors some of this generated energy can be stored to be fed back into the lift system when it needs it, particularly at high power demand for example, on acceleration.
Significant savings of overall energy consumption can be made this way. Some cases site up to 70% savings.
They are compact units that can be installed on new or existing lifts which are electric traction and, have Variable Voltage Variable Frequency [VVVF] motor control technology installed. VVVF drives are almost universally common across electric traction lifts today.
They do not require and connection to, or interaction with the lift control system. They are simply connected to the VVVF lift drive.
The capacitors come integral with a high-efficiency convertor that can take and receive electricity from the lift drive unit.
Furthermore, more than one unit can be installed in parallel to provide extra capacity for move energy recover.
