Elevator power consumption is huge,which is one of the largest high-rise building energy consumption equipment.According to the China Elevator Association estimates that the elevator daily power consumption accounts for 5-15% of the total building energy consumption.At present,the traction machine used in elevator is mainly permanent magnet synchronous motor and traditional asynchronous motor.Permanent magnet synchronous motor using direct drive mode, drive efficiency significantly improved at the same time,than the traditional motor energy consumption significantly reduced by about 50%.With the national energy-saving emission reduction policies continue to implement,the use of permanent magnet synchronous motor energy-saving elevator is undoubtedly the future direction of development.

2016 domestic elevator production was 7714,000 units, an increase of 1.5%, accounting for the proportion of global elevator production more than 90%.2016 domestic energy-saving elevator penetration rate was about
60%,in addition,each energy-saving elevator NdFeB dosage is 7kg,according to the calculation of 2016 domestic energy-saving elevator,NdFeB consumption was expected to 3240 tons. 1) Taking into account the 2016 real estate investment and new house sales area of ​​a substantial increase in the demand for elevators is expected to be gradually released in the two years,assuming 2017-2018 annual growth rate of domestic elevator production is 10%; 2)the permeability increase by 5% per year.Based on the above assumptions, it is expected that the amount of NdFeB in domestic energy-saving elevators will be 3861 tons and 4574 tons respectively,increasing by 19.17% and 18.46% respectively in 2017-2018 years.