VFD Panels – A Brief Introduction

Today, VFD Panels are becoming a standard equipment used across multiple sectors in varied applications. VFD is generally designed to control the speed of the electric motor and feed pump. They are most commonly used in Drilling, Pumping and the implementation of other machine applications. The application of a VFD Panel can be observed in hospitals, business houses and other public places.

What are VFD Panels?

VFD or Variable Frequency Drive Panel is a power conversion device that converts a basic fixed-frequency, fixed voltage, sine-wave power to a variable frequency/voltage. These panels are designed to control the speed of the electric motor and can be effectively used in drilling, pumping and other such large machine applications.

Features Of A VFD (Variable Frequency Drive Panel)

Variable Frequency Drive Panels are extremely energy efficient and come with better process control. In additional to this; here are a few important features of the Variable Frequency Drive Panel.

• They may be used to control the process temperature, pressure or flow without the use of any separate controller: either automatic or manual.
• VFD Panels encourage lower operating speed, thereby reducing the maintenance cost and the longevity of the bearings and the motors.
• Such panels eliminate the need for throttling valves and dumpers.
• VFD Panels eliminates the use of soft starters for motors.
• They can limit the torque of the machine to a customized level that can protect driven equipment that use excessive torque.

How Does A Variable Frequency Drive Panel Work?

The first stage of a VFD Panel is known as a converter. The converter usually comprises of six parallel diodes, that are similar to check valves used in plumbing. These six diodes usually allow the current to flow only in one direction.

For example: Whenever A phase voltage is positive than B or C phase voltage, then only the A diode would open and allow the current to flow. When the B-Phase becomes more positive than the A-phase, then the A-Phase diode would close giving way to the B-Phase diode and so on. Alternatively, the same goes on the 3 diodes of the negative side of the connection bus. As a result of this, we get six current “pulses” when each diode opens and closes. This is popularly known as the “six-pulse VFD”, which is the standard for any Variable Frequency Drive Panel.

Thus, if you have an application that does not need to run on full speed, you can cut the energy consumption by controlling the motor with a variable frequency drive panel. VFD Panels allow the end-user to match the speed of the motor with the power load requirement.

At BALARK ELECTRICALS we strive to deliver high quality products at an extremely affordable cost. With years of experience, BALARK ELECTRICALS has carved a niche amidst the leading manufacturers, suppliers and exporters of finest Electrical Components. For information and other details, please feel free to visit: http://www.balarkelectricals.net/

Author is representing this article on behalf of Balark Electricals. Balark Electricals is a manufacturer & supplier of APFC Panel, Changeover Panel.