What are the conventional adjustment methods for stepping motor drivers?

by:V&T Technologies     2020-01-09
What are the conventional adjustment methods for stepping motor drivers? The conventional methods of adjusting the speed of the stepper motor driver are divided into the following: first, the advantages of commutator motor speed regulation: ① It has simple structure of AC synchronous motor and good speed regulation performance of DC motor; (2) use power supply voltage at low speed and step motor back potential to convert current naturally at high speed, which is reliable in operation; ③ No additional slip loss, high efficiency, suitable for starting and speed regulating of high-speed and large-capacity synchronous motors. Disadvantages: The overload capacity is low, and the capacity of the original motor cannot be fully exerted. Second, the advantages of stator voltage regulation and speed regulation: ① simple circuit, small device volume and low price; 2 easy to use and maintain. Disadvantages: ① slip loss is increased in the speed regulation process, which causes the rotor to heat up and has low efficiency; ② Speed range compare the small; (3) high slip motors, such as specially designed torque motors, are required, so their characteristics are relatively soft and are generally suitable for asynchronous motors below 55kW. 3. Advantages of rotor series resistance speed regulation: ① low technical requirements and easy to master; (2) low equipment cost; (3) no electromagnetic harmonic interference. Disadvantages: ① cast iron resistors can only be adjusted in stages. If liquid resistance is used for stepless speed regulation, maintenance and maintenance requirements are higher; (2) in the process of speed regulation, the additional slip power is all converted into the loss in the form of the series resistance heating, with low efficiency. The speed range is not big. Four, electromagnetic slip clutch speed stepping motor driver advantages: ① simple structure, small capacity of control device and low value; (2) reliable operation and easy maintenance; (3) no harmonic interference. Disadvantages: ① large speed loss, because the electromagnetic slip clutch itself has a large slip, the maximum speed of the output shaft is only 80% of the synchronous speed of the motor ~ 90%; (2) in the process of speed regulation, the poor power is all converted into loss in the form of heat energy, with low efficiency. TAG motor driver
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