Inverter function.

Bringing in outstanding utilities, up to now, inverters have become an indispensable part of machine systems, especially in the automation industry.

1.Change engine speed, meet technology requirements

The working principle of the inverter is based on 3 main parts including: rectifier, filter and inverter:

  • Rectifier: converts 1-phase or 3-phase AC power into DC power (DC voltage) and stores it in a capacitor.
  • Filter: used to filter flat DC voltage.
  • The inverter: applies the PWM pulse width modulation method through the IGBT system (Isolated Gate Bipolar Transistor) to generate a symmetrical 3-phase voltage.
  • Formula for calculating engine speed:  N = (2x60xf)/P

F is the frequency of the voltage supplied to the motor P is the number of pairs of motor poles Based on the working principle, the inverter adjusts the frequency of the 3-phase output voltage symmetrically to power the motor, thereby allowing speed adjustment engine, meet technology requirements.

The function of the inverter is to change the motor speed to meet technological requirements.

2.Protect the engine, reduce mechanical wear

The inverter changes the motor speed from starting to rated speed so that the starting current does not exceed 1.5 times the star-delta starting current and 4-6 times the direct starting current.

The inverter has built-in overload, over-current, high-voltage, and low-voltage protection functions to help protect and increase motor life.

The inverter adjusts the motor’s starting process smoothly to avoid shock and reduce mechanical wear.

3.Save energy

Compared with direct starting, the starting current by inverter is reduced by 4-6 times, so the power consumption is reduced by 20 – 30%.

In addition, for applications that control pumps, fans, air compressors, etc. or other applications that need to control flow and pressure, the inverter will help reduce/stop the motor in idle mode, thereby saving money. Maximize power consumption.

The function of the inverter is to save energy consumption

4.Improve productivity and product quality

The inverter can help the motor run at a higher speed. Therefore, for many applications such as textile, dyeing, weaving, inverters help increase productivity compared to using direct power.

5.Control system operation through operating parameters

The inverter has motor monitoring parameters including: operating frequency, speed, voltage, current, etc. to help the operator check the operation status easily for proper handling and adjustment. combination leads to higher efficiency.

 

For more information, please visit the website  or contact the hotline: 0978.70.50.50 for quick support and advice.

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24/08/2021

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