Figure 1. AC inverters, also called AC drives or variable frequency drives, provide the frequency and voltage needed to drive an AC motor. AC drive application basics Pumps, fans, and conveyor ...

Variable frequency drives typically control velocity or torque. In contrast, servodrives are often used to control motor position — and almost always use a position feedback device on the motor.

Applications Variable frequency drives are used for two main reasons: To improve the efficiency of motor-driven equipment by matching speed to changing load requirements. To allow accurate and ...

Properly applied variable-frequency drives are affordable, reliable, and flexible, and they offer a significant amount of savings through reduced electric bills. Electronic variable-frequency drives ...

Do you know how to maintain variable frequency drives (vfd’s)? Doing so is easier than you might think. By integrating some simple, logical steps into your preventative maintenance (PM) program, you ...

From enhanced energy efficiency and improved process control to reduced mechanical stress, noise reduction and motor protection, the operational advantages of variable frequency drives are ...

When it comes to making decisions among various automation technologies to perform a task, the answer is rarely clear cut. Ultimately, the decision is often tied to the specifics of the application ...

When a motor drive goes down, production often grinds to a halt. How do you find and resolve the problem quickly?When that variable frequency drive (VFD) goes down, you're under pressure to get it ...