One of the core services we offer at PCS Energy is process automation. We install tools and devices in your facility that eliminate wasted time and increase the overall efficiency of your process. Achieving the highest level of efficiency is all about trimming away all the little things that slow you down until you’ve reached a sleek and streamlined design that rolls along without any bumps in the road. So, what is the purpose of a VFD? The variable frequency drive or VFD is one of the devices that contributes to this process.
If you have any AC drive motors in your location or facility, we can automate their processes with the VFD. They work in tandem with almost any AC motor. They can run industrial equipment, control pumps, or alter pressure and control flow for other pieces of equipment. The VFD takes direct control of your electric motor in a more efficient way than any human operator could. The VFD works to run the AC motor at variable speeds and helps the motor ramp up its speed to deliver a smoother start-up process.
They do this by making small, rapid adjustments to the frequency and voltage sent to the motor, altering the RPMs of the motor itself. Varying the frequency from the voltage source like this requires the VFD to convert the voltage twice before it gets to the motor. The first time, it takes the AC power and turns it into a DC voltage current using a diode. Then, making use of a capacitor, it cleans up and adjusts the voltage. From there, the VFD uses transistors to convert the current back to AC and sends it to the motor. It is these stages that allow the VFD to control the speed of the motor so precisely.