Tech

Here is Your Brief Introduction to Variable Frequency Drives

Electrical devices today are engineered with the objective of completing complex tasks in a seamless and safe manner with limited manual intervention. With constant pursuits towards smarter energy control solutions for industrial and personal scale appliances, electronic devices that can determine required voltage or frequency are sought after as they can be regulated as per the system’s requirements. Industries that heavily rely on such machines with high power consumption and customised machinery needs are increasingly leaning towards such solutions such as a variable frequency drive that can help them achieve the same. 

As one can gauge from its name, a variable frequency drive is designed to effectively drive and control the frequency of an attached AC electric motor by changing its supplied frequency and voltage and making it run at the required speed. As a variable frequency drive can be a useful inclusion in different appliances, let us briefly introduce variable frequency drives.

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What is a Variable Frequency Drive?

The operations of a variable frequency drive are targeted towards varying the frequency and voltage of the power supply being sent towards the electric motor of an appliance. As it directly affects the power supply of the electric motor, it can rampup or rampdown the motor during its start and stop. It is often called a speed control drive as well as it alters and adjusts the speed of the attached electric motor. A variable frequency drive is usually composed of three components:

  • AC Motor
  • Controller
  • User/Operator Interface

The reasons to install a variable frequency drive within an electrical device or system can be many; let us take a closer look at the same. 

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  • Energy Efficient: One of the main reasons users invest in a variable frequency drive for their electrical devices and systems is to reduce any unnecessary power consumption by the AC motor. As the variable frequency drive runs down the speed and frequency of the motor, it can match the device’s optimal load requirementand thus reduce miscellaneous power consumption significantly. A variable frequency drive is one of the only ways that one can control an AC electric motor to this degree.  
  • Performance Control: As the devices with a variable frequency drive are controlled to be run to an optimal degree with regulated power consumption, it leads to the machines and appliances being run in an efficient manner with limited mistakes. On an industrial scale, close control of the device and its operation leads to an increase in productivity and, subsequently, an increase in the revenues thus earned from its seamless operations. 
  • Extend Product Lifespan: The speed regulation and power consumption control lead to the appliance or electrical device going through a significantly lesser amount of wear and tear over time. A variable frequency drive controlling the power supply leads to lesser machine downtime and maintenance breaks, as it effectively protects the device from thermal overloads, under/over voltage and instant shocks of the device at the time of its operations. 

Variable frequency drives can usually be found in devices such as fans, lifts, escalators, compressors, pumps and also energy efficient refrigerators. By their very nature, they are essential additions to a electrical device or a power system if they strive to be power efficient and safe from operation damage. Therefore, one should invest in a variable frequency drive produced by reputed and trusted electrical service providers who come with a guarantee of smart and energy efficient electrical systems.

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