Is permanent magnet synchronous linear motor is ac motor or dc motor?
Permanent magnet motor, general is small dc motor, and ac motor, generally do not have dc small, the excitation that USES is line excitation also. It's not permanent magnetism. Like some razor, small motor is permanent magnet dc motor, some dc output of the generator, is also a permanent magnet, some also dc generator output, but it was all in after a dc generator output, and is not directly the output direct current.
Whether the permanent magnet synchronous motor and electric field, as a motor stator will pass into the symmetrical three-phase alternating current (ac), as a generator, the stator is a three-phase alternating current, so it is ac motor. Haha, hope can help you!
Permanent magnet synchronous linear motor is ac motor, because no matter used as a generator or motor, the current in the stator windings are in communication, and its dynamic (vibrator) with permanent magnet, nor need winding current. "Permanent magnet" refers to the rotor of an electric motor (for the rotary motor) or for the motor (for linear motors). 2. "synchronous" refers to the speed of the motor () of rotary motor or motor speed () of linear motor and armature winding zhongtong into current frequency to maintain strict proportion relationship. The frequency of direct current is zero, so whenever you see the word "sync" in the name of the motor, you can immediately say that it belongs to ac motor! The "line" refers to the movement of the motor in the motor part of the motor, which is in line with the "rotating" motion of the rotor in the conventional motor.
Permanent magnet synchronous motor is usually counter electromotive force trapezoidal wave, the armature current is for the square wave brushless dc motor, the counter electromotive force and the armature current is sine wave called a permanent magnet synchronous motor. The brushless dc motor usually adopts a full range winding to generate the trapezoidal wave counter electromotive force. In order to generate the sine wave, the permanent magnet synchronous motor requires a short distance or integral pitch, fractional slot, or oblique slot winding.
