What is the difference between two phase and three phase / five phase of stepping motor? Thank you
Now more commonly used stepper motor, including reactive stepping motor (VR), permanent magnet stepper motor (PM), hybrid stepping motor (HB) and single-phase stepper motor.The permanent magnet stepper motor generally is two-phase, torque and small volume, the stepping angle is generally 7.5 degrees or 15 degrees;The reaction stepping motor is generally three-phase, and can achieve large torque output. The step angle is generally 1.5 degrees, but the noise and vibration are very large. The rotor magnetic path of the reaction stepping motor is made of soft magnetic material, and the stator is provided with a polyphase exciting winding, and the torque is generated by the change of the permeance.Hybrid stepping motors refer to the advantages of mixing permanent magnet and reactive type. It is divided into two phases and five phases: two phase stepping angle is generally 1.8 degrees, while the five phase stepping angle is generally 0.72 degrees. This stepper motor is the most widely used, but also the subdivision of the drive program used stepper motor.
Phase number of stepping motor:Refers to the number of coils inside the motor, the current commonly used in two-phase, three-phase, four phase, five phase stepper motor. The motor phase number is different, and the step angle is different. The step angle of the general two-phase motor is 0.9 DEG /1.8 degrees, the three-phase is 0.75 DEG /1.5 degrees, and the five phase is 0.36 degrees /0.72 degrees. In the absence of subdivision drive, the user mainly depends on the choice of different number of stepper motors to meet the requirements of their own step angle. If you use a subdivision drive, the number of phases will become meaningless and the user can change the step angle just by changing the fine fraction on the drive.
If a synchronous motor of the same size, the 5 phase will be more accurate than the 2 phase. The main depends on its step distance, angle, size, the smaller the angle, the more accurate. Torque is related to speed, so you have to calculate their total power first. If you refer only to the torque on the motor shaft, the larger of the five phases.
