DC Motors plays an important role in energy conversion process. It is a machine which converts electrical energy into mechanical energy. In mechanical system, speed varies with number of task so speed control is necessary to do mechanical work in a proper way. It makes motor to operate easily.
Why is speed control important?
This is very important when you start and break in large electric motors, because the greatest loads on the motor and the power supply occur in these cases. Furthermore, intelligent speed control reduces the maintenance and servicing costs of the plant many times over, thus saving considerable time and money.
What is the importance of speed control of DC motor in industrial applications?
Good speed control
By changing the armature or field voltage it’s possible to achieve wide speed variation and with this level of controllability, DC motors offer the precision required by a wide range of industry applications.
Which motor is best for speed control?
Brushless DC motors are an advanced option due to their wide speed range, low heat and maintenance-free operation. Stepper Motors offer high torque and smooth low speed operation. Speed is typically controlled by manual operation on the driver or by an external switch, or with an external 0~10 VDC.
What is control speed?
: equipment designed to operate automatically under certain conditions to keep the speed of a railroad train within a predetermined rate.
How do you increase motor speed?
Increasing the speed can be achieved by increasing the supply frequency as the speed and frequency are directly proportional; however, there are two constraints. The first is the saturation of the magnetic circuit, but this issue can be significantly avoided by keeping the V/f ratio constant.
What is the speed of the motor?
Definition. Speed of a motor is the magnitude of the rotational velocity of the motor shaft. In a motion application, speed of the motor dictates how fast the axis rotates – the number of complete revolutions per unit time.