In conventional systems, the motor is running at full speed, and the output is controlled through various means like dampers, throttles, and gear reduction. However, these systems are very wasteful. With the AC Drive, the speed of the motor can be reduced exactly as required. Take, for example, pumps and fans. By reducing the speed of the motor, the power consumption can be reduced considerably, thus saving energy.
The other major advantage of using VFDs is process control. Acceleration and deceleration of machines are smoother, and there is less likelihood of mechanical shocks. These machines are more reliable and last longer. For example, for conveyor belts, mixers, and compressors, it is essential to keep the motor running at a constant rate and torque.
AC drives are available with various advanced features, including overload protection, fault diagnosis, programmable parameters, and communication capabilities with PLC systems. These are essential for smart and automated manufacturing facilities.
AC Drives and VFDs have become an integral part of modern industrial automation due to improved efficiency and longer lifespans of machines. These devices have helped manufacturers reduce costs and increase productivity and sustainability.