The basic working principle of permanent magnet synchronous motor

The principle of permanent magnet synchronous motor as follows zhongtong into three phase current,the stator winding of the motor after the current will be formed in the stator winding of the motor rotating magnetic field,due to install the permanent magnets in the rotor,Magnetic pole of permanent magnet is fixed,according to the principle of magnetic pole of same-sex attraction heterosexual reactive,in the stator rotating permanent magnet generator 5kwmagnetic field generated by the drives the rotor rotate,eventually achieve the rotation of the rotor speed and stator equals the speed of rotating magnetic pole,so Can the starting process of permanent magnet synchronous motor as the asynchronous start-up phase and phase of pull in synchronization.In asynchronous start study phase,the speed of the three phase induction motor motor is gradually increased from scratch,the main cause of the appeal is its turn in asynchronous Moment,permanent magnet generator brake torque,torque of the magnetic resistance torque and single shaft by a series of factors such as asymmetry of rotor magnetic circuit and led caused under the function,so in the process speed oscillation is rising.

In the process of starting,torque,Asynchronous torque is the driving motor is only with this torque can be accelerated,most other torque is given priority to with brake properties.In motor increased from zero to nearly the speed of the rotating speed of stator magnetic field,under the influence of pulse vibration torque of permanent magnet Permanent magnet synchronous motor speed is likely to exceed the synchronous speed,and the basic working principle of single phase capacitor start induction motor permanent magnet synchronous motor The principle of permanent magnet synchronous motor as follows zhongtong into three phase current,the stator winding of the motor after the current will be formed in the stator winding of the motor rotating magnetic field,due to install the permanent magnets in the rotor,Magnetic pole of permanent magnet is fixed,according to the principle of magnetic pole of same-sex attraction heterosexual reactive,in the stator rotating magnetic field generated by the drives the rotor rotate,eventually achieve the rotation of the rotor speed and stator equals the speed of rotating magnetic pole,so Can the starting process of permanent magnet synchronous motor as the asynchronous start-up phase and phase of pull in synchronization.

In asynchronous start study phase,the speed of the motor is gradually increased from scratch,the main cause of the appeal is its turn in asynchronous Moment,permanent magnet generator brake torque,torque of the magnetic resistance torque and single shaft by a series of factors such as asymmetry of rotor magnetic circuit and led caused under the function,so in the process speed oscillation is rising.In the process of starting,torque,Asynchronous torque is the driving motor is only with this torque can be accelerated,most other torque is given priority to with brake properties.In motor increased from zero to nearly the speed of the rotating speed www.dongfeng-motor.com of stator magnetic field,under the influence of pulse vibration torque of permanent magnet Permanent magnet synchronous motor speed is likely to exceed the synchronous speed,the speed overshoot phenomenon occurs.But after a period of time after speed oscillation,finally in synchronous torque under the action of pull in sync.Speed overshoot phenomenon.But after a period of time after speed oscillation,finally in synchronous torque under the action of pull in sync.