Despite recent advances in technology and production, to obtain the desired result, always needed a certain revision. There is a view of completion of some operations that require simple tools. However, the introduction of advanced automated equipment, including electric drive of a direct current, daily becoming more active.
Modern electric systems are divided into two groups according to the following parameters:
1) driving force;
2) the name of their main component.
If such a component is absent, the functionality of the electric drive system is completely eliminated.
There are electric AC motors, which are divided into asynchronous and synchronous, and the device that converts direct current into rotational motion of an appropriate mechanism. Each type of actuator has its pros and cons.
AC is not DC. This means that the voltage in an electrical circuit can vary considerably in their performance, ranging from the very modest to the impressive settings. Therefore, the device, which is carried out by such electricity, have, as if to say, "unbalanced character".
In other words, AC motors because of the characteristics of the moment of starting and braking, not all cases are easy to operate. Also they are not able to create torque with smooth operation. In addition, AC motors have their characteristic appearance, fairly heavy weight and impressive size, which gives some difficulties during repair and regular maintenance.
As for electric DC drives, they are used for quite some time. Such devices have found wide application in virtually all sectors of the economy. Since the day of his birth, the drive DC gradually began to conquer new spheres of human activity, especially construction, industry, agriculture and many others.
Therefore, people in that time have accumulated enough experience and knowledge concerning the use and repair of such devices. This is the main argument when you want to replace the faulty and outdated driving components of the electric drive. Instead of motors running on AC, set for DC motors.
What are the advantages of electric motors running on direct current? It is primarily the small size, low weight and the ability to create the most smooth, without any sharp jerks a course necessary to rotate the working element of the electric drive. Another advantage of them is the use of various principles of electromechanics. For example, in the case of a sharp increase in the load on the rotation shaft the number of revolutions of an appropriate mechanism is gradually reduced, allowing to use the DC motors in brand new, unused before construction industries.