Why We Use VFD Technology

Posted on Monday, August 18, 2014 by Kimberly Versaw

In a previous blog entry we discussed what VFD technology is and what currently happens with drive systems.  Variable frequency drives are used in a variety of contexts where the speed of an electrically powered motor needs to be changed (ie: heating and cooling systems).  Variable frequency drives give the user the ability to change the motor's speed, so they can adjust the system to their comfort level. The basic functions on which these drives work are the magnetic fields generated by electricity and the adjustable nature of electrical frequency.

Why use VFD?  Below are some benefits to this technology:

  • Reduced energy consumption
  • Efficient use of power to produce a desired torque with a minimum electrical load
  • Lower maintenance costs
  • Ease of application and programming
  • Mixed components / modular units
  • Common programming language

The benefit of a VFD is that you can regulate the process temperature without using a separate controller. This will lower maintenance costs and lower the operating speed, allowing a longer life span for your motor. There is no need to use a soft starter anymore, and the controlled speed will eliminate any water-hammer problems. The ability of a VFD to control the torque in the motor-driven system protects equipment that can't tolerate excessive torque. 

In short, a VFD system only consumes exactly as much power as it needs.  Variable frequency drives are used as components in a variety of different systems such as ventilation systems, pumps, conveyors and machine tool drives. These drivers are essential for equipment that must operate at different speeds. With ventilation systems, the variable frequency drive creates the benefit of saving energy by only generating what is needed for proper ventilation.

So what’s so special about VFD cables?  Check out our next blog to find out!


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