Which speed control method is more efficient?
Armature Resistance Control Method The power loss in the control resistance of DC series motor can be neglected because this control method is utilized for a large portion of time for reducing the speed under light load condition. This method of speed control is most economical for constant torque.
What are the factors that controls motor speed?
Thus, there are three general methods of speed control of D.C. Motors.
- Resistance variation in the armature circuit: This method is called armature resistance control or Rheostat control.
- Variation of field flux Ф This method is called field flux control.
- Variation of the applied voltage.
What’s the difference between torque and speed control?
Torque can be whatever is necessary depending on motor, load etc. to achieve the speed. Torque control controls the motor current (torque proportional to motor current) based on open loop current command or closed loop with torque feedback. Not a question of pros & cons.
How does torque control work on a DC motor?
Complete torque control may be dependent on the use of an external torque reference circuit or control that has flexibility and adjustability to compensate for any drive/motor shortcomings. 3.) DC Drives – Velocity (Speed) Control: To regulate DC motor speed, the drive will normally control the armature voltage.
Can a DC motor controller use speed control?
A DC motor controller is generally using a speed control, however several models I’ve been able to find specs on will allow either torque or speed control (by themselves, or with the addition of a module). Simple answer?
How does pure speed control work on a motor?
Pure speed control will feed 100% of your available torque to the motor to get it up to the “requested” RPM. (Remember now, volts = RPM, so it’s specifying the voltage and letting the current rip until the RPM gets to the target.)