What Is A Variable Frequency Drive

How Is VFD Defined?
Variable Frequency Drive, also known as adjustable frequency drive or adjustable speed drive is a motor controller that has the ability to vary the frequency and the voltage which come to the motor and with that to enable driving the motor.

How The Variable Frequency Drive Works?
The variable frequency drive is consisted of to main components: rectifier and inverter, and additional parts such as transformer and battery.



In the VFD the rectifier is the part that is used for converting the AC power that comes from the power source, to DC power. After the conversion of AC power to DC power, the inverter converts the received DC power to the desired frequency AC power.

The third part, the transformer adjusts the voltage and isolates the electric output and input circuits. During the conversions, a battery is used for compensating the lost energy inside the drive circuit which is located inside the variable frequency drive.

Where is Variable Frequency Drive Used?
VFD is used in a variety of applications. It can be used from small appliances up to massive-in-size mine mill drives. This motor controller is also used in wide range of compressors.

The use of VFD in the recent years has noted significant growth as a result of the improvements that were made in it's design and performance and the reduction of the price. The improvement that were made in the design and the performance capacity of the VFD, were made through:

  • advancements in the semiconductor switching devices;
  • improvements in the techniques for control and simulation;
  • changes in the software and hardware vital for the control.

Benefits Of The Use Of Variable Frequency Drive



  • Energy Saving – The use of VFD in applications where motors with mixed speed are used, is proven as energy saving practice. This means that, by adjusting the speed of the motor with the use of this controller, the applications can be performed with lower amount of energy.
  • Control performance – Besides the improvements and benefits in the usage of energy, the variable frequency drive can improve the overall quality of the industrial and commercial applications. This is achieved thanks to the ability of this controller to control the flow, the speed, the pressure and the temperature during the applications.

Comments

Post a Comment

Popular posts from this blog

Reasons Why Cotton Is the Best Fabric for Kids T-Shirts

Image
Kids are very moveable and love to play. And often time playtime means getting dirty. Sweat, sand, cuts and scrapes - they are all part of kids' games. Because of this, your little ones need pieces of clothing that will withstand heavy use and washing as well. Clothing that can take a beating and be ready for round two. Cotton is one of the best materials for kids' clothing because it's flexible, strong, and safe. But moreover, with cotton, you will spend less time washing their dirty clothes because cotton is very easy to care for.
Read more

How to Pull Off Wearing Western Boots

Image
Who says that you have to be a cowboy to wear and appreciate Western clothing? Every man can incorporate a touch of the Western style in his outfits with the right accessories, like by opting for a pair of western boots. Now honestly, they can be a bit tricky to pull off so if you have always wanted to wear such a pair, but still haven’t figured out how, let’s go through a few ideas.
Read more

A Basic Guide to Buying the Right Off-Grid Solar Inverter

Image
If you've spent any time researching off-grid solar systems, you've probably heard about the importance solar inverters play in it. It's basically the system's brain, managing its power flow and controlling the two types of power - DC and AC. DC, also known as direct current, is the power harvested by the panels and stored in the batteries. This type of power can't be used by your appliances, which is exactly why you need a solar inverter to change it into AC, or alternating current, that can then be used to power your TV, lights, fridge and other household appliances. While there are also on-grid inverters, off-grid inverters are much different in what they do.
Read more