DC motor speed control

In a world where machines have become our constant companion, it is impossible to go anywhere without seeing or using some kind of electrical motor. A lot of these motors are DC motors which convert DC electrical energy to a mechanical energy form. Since these motors are used in appliances quite a lot, it is important to have DC motor speed control.

The principle behind a DC motor is a coil carrying a current which is placed in a field that’s magnetic. This interaction between the electrical and magnetic field produces a mechanical force and that is what moves our machinery. The main difference between the DC motor and a generator is in their outputs. The generator’s output is electrical energy as opposed to that of a motor’s which is mechanical. Otherwise, their construction is exactly the same. The DC motor speed control is achieved by controlling the rotor voltage and rotor current. It can also be done by changing the magnetic flux in the air gap.

Without DC motor speed control, it will be difficult for us to use the appliances which utilise them, with ease. It helps us control the speed at which they perform so that we can choose whatever works for us. Using any kind of machinery has now become simpler and is possible at the touch of a button. The DC motor can be used at both low power and high power. Since their manufacturing cost is quite inexpensive, they can be used in simple household appliances like power tools and sewing machines. They are also used in fixed speed applications like windscreen wipers.

DC motors have been used for ages in simple machinery, both large and small, that makes our lives easier. Teco Electric Co. Ltd. specialise in the manufacture of these DC motors that play such an integral role in the modern world.