Development status and demand trend of energy-saving elevators and rare earth permanent magnet tractors
According to industry association data, elevator production and sales in 2015 were close to 800,000 units. The market share of local elevator brands has reached 46%, showing an increasing trend year by year; Foreign brands accounted for 54% of the decline year by year. In 2015, Shanghai Mitsubishi Elevator sold 70,012 elevator products, an increase of 4.52% over the previous year.
​
Energy-saving characteristics of permanent magnet tractor
According to the Elevator Association estimates, the average elevator in China consumes about 40kWh of electricity per day, accounting for about 5% of the entire building energy consumption. Due to the application of rare earth permanent magnet NdFeb, the elevator tractor has the advantages of small size, low loss, efficiency, low noise and so on, and has developed into the mainstream model of the new tractor, and occupies the mainstream position in the market. Installation of permanent magnet synchronous traction machine room elevator technology, elevator in the entire building energy consumption is expected to be controlled at about 3%, the average annual saving of each elevator 3000-5000 yuan electricity.
The direction of future demand
The future market demand for energy-saving elevators mainly includes four aspects, one is the new demand (including rail transit construction), the second is the replacement of old elevators, the third is the energy-saving transformation of old elevators, and the buildings above four and four floors must be installed with elevators and other mandatory measures.
Public data show that by the end of 2015, there are about 80,000 to 100,000 elevators with a service life of 15 years. The number of elevators operating for more than 15 years will rise in the future, reaching 400,000 units by 2020.
As a driving part of the elevator traction machine, its energy consumption accounts for more than 80% of the elevator power consumption, so the application of energy-saving permanent magnet synchronous traction machine has significance. With the promotion of energy conservation and environmental protection in China, and the continuous improvement of permanent magnet synchronous traction machine technology, the application of permanent magnet synchronous gearless traction machine products will be more extensive, and will eventually 100% replace the traditional traction machine. Rare earth permanent magnet Ndfeb is an important material to achieve energy saving and environmental protection permanent magnet tractors, and its application will expand with the development of permanent magnet tractors.