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Energy saving elevator registration assessment, similar to the use of household electrical appliances, or AAA, AA, A, B, C five system. And the AC double speed elevator if it is C level, then the turbine worm VVVF lift can be B level, permanent magnet synchronous machine power is smaller than the turbine worm, so the use of permanent magnet synchronous motor VVVF elevator can be included in the A level.
To get the elevator at the AA level, it must be able to lift billom magnet synchronous motor can save more energy.
And access to the AAA level of the elevator is the world’s most advanced energy-saving technology and application of the elevator products.
According to the above situation and the actual use of the elevator, we put forward the following energy-saving elevator grade evaluation of hard index reference
AAA: permanent magnet synchronous machine, VVVF control technology, elevator power generation utilization to reach 30-35%, not directly impact power grid. This kind of elevator energy saving effect is good, the power grid has no impact, is the third generation of real mature energy-saving elevator.
AA: permanent magnet synchronous host, VVVF control, use of the elevator power, for example, energy feedback, but energy feedback must be in line with the national grid network conditions, with rectifier and of power to steady wave of string processing technology and grid is not harmful impact of elevator. Feedback energy utilization rate reached 20-25%, the elevator into the third generation of energy-saving elevator industry, but belong to access to the threshold of the third class energy-saving elevator.
A permanent magnet synchronous machine, VVVF control, the lift popularization and application in large area has been around for nearly a decade, and sales are increasing year by year, market share each year are in improving, power consumption province, the environmental protection to better than worm elevator, is now the mainstream products, will also continue to increase the share. This kind of elevator is the second generation of energy-saving elevator.
B: turbine worm host, VVVF control, the class of the elevator motor power is relatively large, but more than the exchange of two speed energy saving, but also the first generation of energy-saving elevator technology, but is currently being gradually reduced production. Market also continue to have sales, before the elevator is the mainstream products.
B-C: AC double speed control, turbine worm elevator host, PLC or more old control mode, the class of the elevator is mainly the old elevator and cargo elevator.