Permanent Magnet (PM) AC gearless machines are a technology that has been used in the elevator industry in Europe and Asia for more than a decade.
The last years have become PM installations and modernization applications increasingly spread in the elevator market. Some reasons for their growing popularity is higher mechanical efficiency than a gear transmission traction system.
What is PM Motor?
The Permanent magnet synchronous motors are one of the types of AC synchronous motors, where the field is excited by permanent magnets that generate sinusoidal back EMF. It contains a rotor and stator same as that of an induction motor, but a permanent magnet is used as a rotor to create a magnetic field. Hence there is no need to wound field winding on the rotor.
Working of Permanent Magnet Synchronous Motor
The operation of a permanent magnet synchronous motor is much simpler, faster and more efficient compared to conventional motors. The operation of the PMSM is dependent on the rotating magnetic field of the stator and the constant magnetic field of the rotor. Permanent magnets are also used as rotors to create a constant magnetic flux, acting and locking at synchronous speeds.
When three-phase AC power is supplied to the stator, it creates a rotating magnetic field and the constant magnetic field is induced by the permanent magnet of the rotor. This rotor works synchronously with the synchronous speed. The entire operation of the PMSM depends on the air gap between the stator and the no-load rotor.
If the air gap is large, the motor wind losses will be reduced. The field poles created by the permanent magnet strike. Permanent magnet synchronous motors are not self-starting motors. Therefore, it is necessary to electronically control the variable frequency of the stator.
Advantages of Permanent Magnet Synchronous Gearless Traction Machine
- Low wear
- Energy Saving
- Easy to install
- Smooth Operation
- Easy to Use
1 Comments
Virtual Goods can by no means be redeemed for real cash, items, or any other item of financial worth from Company or any other celebration. You understand that you haven't any|you don't have any} proper or title in Virtual Goods apart from the extent of your limited license. No matter what system 온라인카지노 would possibly be} using to play – just choose any slot amongst our free online slot video games, and use it lengthy as|so lengthy as} you need.
ReplyDelete