What Is The Permanent Magnet Synchronous Motor?
The PERMANENT MAGNET SYNCHRONOUS MOTOR is mainly composed of the
stator, rotor, chassis, front-rear cover, bearings, etc. The
structure of the stator is the same as that of ordinary
asynchronous motors, and the main difference between the permanent
magnet synchronous motor and other kinds of motors is its rotor.
The permanent magnet material with pre-magnetized (magnetic
charged) magnetic on the surface or inside the permanent magnet of
the motor, provides the necessary air gap magnetic field for the
motor. This rotor structure can effectively reduce the motor
volume, reduce loss, and improve efficiency.
Basic Principle of Permanent Magnet Direct Drive Motor
A permanent magnet direct drive motor is a type of motor that uses
a permanent magnet as a rotor and realizes transmission by directly
connecting the motor's rotating shaft to the mechanical load being
driven. It offers higher efficiency, lower noise, and higher
accuracy than conventional drives.
Permanent magnet and stator
The rotor of a permanent magnet direct drive motor utilizes
permanent magnets, which are usually made of rare earth permanent
magnet materials. These permanent magnet materials have a high
magnetic energy product and magnetic energy density, which provides
a strong magnetic field. The permanent magnets on the rotor are
usually divided into several pole pairs, each consisting of a south
pole and a north pole.
The stator of a motor consists of a stator core and stator
windings. The stator core is an annular core with several stator
slots inside, and the stator windings are mounted in the stator
slots. The stator winding is usually a three-phase winding, i.e.,
three separate coils called phase A, phase B, and phase C.
