AC Servo Drives

AC servo drives use alternating current to match and meet the varying industrial status and rise up to any occasion to meet machine deviations. AC motors have an outside stationary stator which has coils to produce a rotating magnetic field with the alternating current and an interior rotor which attached to this external shaft creating the precise torque for the machine function.

AC servo drives are widely used in industrial settings. They can be single phased or poly-phased (two-phased, three-phased or hysteresis synchronous). The single phase induction AC servo motor is connected to a single voltage line while the others take up more than one as their nomenclatures suggest. Of all these, the two phase ones most common as servo systems.

The two phase AC motors are more sensitive to voltage fluctuations and changes in the control system. They successfully create a rotating magnetic field. AC servo drives therefore offers better control with high torque, high speed and better application of velocity control.  Their high ability to start power allows lower levels of overall power to be transmitted. The alternating power function determines how much power is needed by the system and gives off only that amount thus managing power efficiency and industrial automation control superbly.

AC servo drives are intrinsic to electronic assembly because they can fill in gaps with alternating current and thereby ensure smooth uninterrupted flow of industrial performance. They come with interactive magnetic fields – the wound and the electrified which are used to synchronize with the frequency of the alternating current. An integrated feedback device that continuously monitors the shaft motion, and in combination with a servo drive regulates the commanded motion very precisely.

Benefits of the AC servo drives –

·         Lower maintenance

·         High starting power potential

·         Less wastage of power

·         Accurate performance for machines

·         Cost effective

·         Provides better industrial automation control for better turnover

Applications of AC servo drives –

·         Electric clocks and timer motors in appliances.

·         Home usage in appliances refrigerator, air conditioners, washing machines, dryers and fans.

·         Industrial usage is manifested in CNC machining, in electronic assembly, in factory automation and very widely in robotics industry.

More and more industries are switching to AC servo drives so that they can perform better, save assembly line costs, create a more economical process all the while making sure that there is optimum energy saving without compromising the level of performance and industrial automation control.