AC DC Drives

AC and DC Drives

AC and DC Drives are the drives, which function on variable frequencies, and are categorized amongst the best-chosen alternatives today. Both these drives serve as a cost effective and handy for the machine operators. Talking of an AC drive or the Variable frequency drive (VFD), it comprises, the outer stationary stator having coils, which are supplied by alternating current. The alternating current produces rotating magnetic field. This rotating magnetic field gives a torque to output shaft. The shaft is attached to rotator which is located inside the drive. DC motor drive uses the control technique and its role lies in between the controller and the motor. Today, there are different practical application DC drives availabe. These largely includes, adjustable or variable speed control; integral motion control and servo control.

The basic principal which makes the AC and DC drives is that electrical energy is used to drive mechanical operations. Therefore, these drives make an ideal use in many big and small industrial plants. Besides, these drives can also be found incorporated in many household appliances such as fans, pool pumps, refrigerators, floor vacuums, washing machines and fan-forced ovens.

There are different usages to which AC and DC drives can be put. Therefore, while you plan to procure one of these drives for your industrial use, you need to take care of Motor Type, Horsepower, Input Voltage, Output Current and the Manufacturer as well. Other requirements for DC motor drives include making a right judgment whether there is a need for DC motor drive or amplifier. There are some of the DC operated drives, which work in combination with brushless DC motor. The genre of DC motor drives, which operate on brushless motor drive, includes trapezoidal, hall sensor commutation, sine wave and others. These drives are put in application where speed control is needed. Some of real time examples include videocassette recorders; photocopiers; printers; fans; laser and much more. By and large, the variable frequency drive and variable speed drive has become an indispensable part of our lives, households and industrial units. These drives are and will continue to play a crucial role in times to come.