At the spark of the industrial millennium, the invention of mechanisms had begun to improve our way of life. Machines such as AC induction motors are rampantly used in most industries today. Rotating at a preset speed, an AC induction motor is directly driven by the frequency of an electric power source. These motors serve as major forces in almost every industrialized process that work with any electrical application, like different kitchen appliances, air conditioners, water pumps, automobiles and even compressors and boiler pumps.
Other than system proficiency, the majority of industries are now after less costly means without compromising outputs and the entirety of the processes.
Here is where the Frequency Inverter comes in. Technically, a Frequency Inverter or much known in the industry as Variable Frequency Drive (VFD) is an electronic device that can adjust the rotational speed of an AC motor by controlling the frequency of the electrical power supplied to the motor. This unit is able to manage speed, temperature, pressure, or flow as intended to run respective systems. Instead of directly connecting the power supply to the electric motor, it is linked to the input of the VFD and then the power is run from the output of the VFD to the motor.
Installing VFDs in your customary systems provide advantages that contribute to the enhanced general performance of your AC induction motors.
It can grant the necessary control as well as save a lot on energy consumption. A Frequency Inverter primarily functions to increase efficiency rate of a motor-driven unit by pushing through accurate and uninterrupted process control with a variety of speed range. Control of speed and power is within your hands. With an adjustable speed drive, you can also achieve overall control from matching speed to altering the load requirements that result in conserving energy.
Another thing from VFD is that you can spare yourself the trouble of having excessive separate controllers in managing your motor system. Thus causing reduced maintenance costs by crossing out throttling valves, dampers, and other superfluous controls, since VFDs already have apt sensors and electronics used to interface the driven unit with the inverter.
In addition to lesser upkeep expenditures, the device allows you to minimize operating frequencies consequently lengthening service life and optimizing durability of bearings and motors. Frequency inverters also add protection from damage to your motors that cannot withstand excessive torque by allotting specified limits into a user-selected level. This is possible thanks to the highlighted control provided by the electronic device.
Using VFDs disables the need for soft starters. No need to worry about limiting the current level when starting the load due to the extensive control of the inverter over the motor equipment. It can achieve the desired power and speed with ease. The adjustable speed drive also does away with other common motor-driven issues such as water hammer setbacks in a liquid system.
Cost-effective and useful in assuring premium system functionality, VFDs ultimately offer better, more productive and trouble-free operations for your AC induction motors.