How To Define A Synchronous AC Motor And What Are The Characteristics Of

AC synchronous motor is driven by a constant speed motor, the rotor speed proportional with the frequency remains constant, are widely used in electronic instrumentation, Office equipment, textile machinery and so on.

Synchronous motor is AC motor, stator windings and motor of the same. Its rotor rotation speed and the speed of the rotating magnetic field of the stator windings is the same, so called synchronous motors. Precisely because of this, sync is out of step with the voltage on the motor current in phase, the synchronous motor is a capacitive load. For this reason, in many cases, synchronous motors are used to improve the power factor.

The rotor speed and the speed of the rotating magnetic field of the stator AC motors with the same. The rotor speed n with magnetic pole number p f, power frequency between n=60F/p. Speed n depends on the power supply frequency f, frequency is constant, the speed does not change, and it has nothing to do with the load. With features such as stability and high overload capacity. Often used in synchronous transmission systems, precision speed control speed control system and large equipment (such as rolling mills).

1, belonging to the line-start permanent magnet in permanent magnet in permanent magnet synchronous motor synchronous motor synchronous motor, its magnetic field system made up of one or more permanent magnets, is usually cast in aluminum or copper welded together cage rotor inside the desired number of poles of inserting permanent magnet pole. Stator structure similar to the motor.

When the stator winding is connected to power, motor principle of asynchronous motor starting, and speeded to the sync speed, generated by the rotor and the stator magnetic field of synchronous magnetic torque (generated by the rotor magnetic field of electromagnetic torque synthesis with the stator magnetic field magnetic torque) rotor fall in step, motor into synchronous running.

Magnetic resistance also known as reactive reluctance synchronous motor synchronous motor synchronous motor, is the use of the rotor shaft and shaft reluctance magnetic torque synchronous motor, stator and stator of an induction motor structure is similar, but in a different structure.

2, hysteresis synchronous Motors hysteresis synchronous motors using hysteresis hysteresis material working torque synchronous motor. It is divided into internal rotor hysteresis synchronous motors, external rotor hysteresis synchronous motors and single-phase shaded-pole hysteresis synchronous motors.

Internal rotor hysteresis synchronous motor for salient pole rotor structure type, look for the smooth cylinder, no winding on the rotor, but useful hysteresis cores on the outer ring of material layer effectively.