Home » Sales & Marketing » The Use of Frequency Inverters
The use of frequency inverters is essential in mechanical engineering applications, more importantly, mechanical equipment that is powered by motors. These inverters ensure precise and meticulous electric motor control so that motor speeds can be ramped up and down and maintained at the exact speeds required.

The Use of Frequency Inverters

The use of frequency inverters is essential in mechanical engineering applications, more importantly, mechanical equipment that is powered by motors. These inverters ensure precise and meticulous electric motor control so that motor speeds can be ramped up and down and maintained at the exact speeds required.This practice limits the utilization of the motor according to energy requirements rather than constant running of the motor and energy wastage. High power inverters are also necessary for the motor operation which consumes a majority of the energy produced. The energy supplies succumb to severe strain if load requirements increase. The inverters present in motor controllers help in 25-70% of the energy savings.

Benefits of using frequency motors-

  • Controlled starting current- Starting the AC motor and load consume 7-8 the motor-full load current. The lifespan of the motor is threatened when the current moves the motor windings and generates heat continually. The frequency inverter begins the inverter at zero voltage and frequency. The motor windings are magnetized as these two parameters build, which consumes about 50-70% of the motor full load current. Any current which adds on to this depends on the connected load, the acceleration rate, and the speed being accelerated. This reduction in the starting current increases longevity of the AC motor as opposed to starting it in the ‘across the line’ mode. High voltage inverters also contribute considerably in increasing the performance and life-span of the AC motor.
  • Reduced Power Line Disturbances- There is a phenomenal drain of the power distribution circuit connected to the motor when the AC motor is started in ‘across the line’ mode. Based on the capacity of the distribution system and the size of the motor, the supply voltage sags. These variations in voltage are detrimental to sensitive equipment connected to the supply voltage as they may trip due to the low voltage level. This affects sensitive equipment such as sensors, computers, proximity switches, and contactors that are voltage sensitive.

A frequency inverter corrects this voltage as the motor is started.

  • Lower Power Demand on Start- The power needed o start an AC motor in ‘across the line’ mode is much higher than opposed to ta motor coupled with a frequency inverter. However, this condition is important only for the initial stages as the power needed to drive the motor at fixed or variable speeds remains the same. In a scenario without a frequency inverter, some distribution systems exceed their limits, which put an undue charge on consumers and tax the distribution system during peak periods. The unknown surges in power cause a rise in costs for consumers, which is easily prevented by frequency inverters.
  • Controlled Acceleration- The benefit of using a frequency inverter peeks through because it begins at zero speed and accelerates smoothly on a ramp that can be easily adjusted by customers. When a motor starts across the line, an immense amount of mechanical shock for both the motor and the connected load. The disadvantage of this shock is the increase in wear and tear on the AC motor as well as the connected load.

About

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*

About us

Our mission is to create an open community where business professionals can establish their thought leadership, increase exposure for their business/organization, and network with others. We aim to provide a balanced view of the current business landscape based on industry news and trends, as well as the real-life experiences from our 100+ expert contributors. We are committed to continually providing new and innovative offerings (i.e. webcasts, whitepapers, site functionality, etc.) that enhance the experience for both our contributors and our audience.