45kW VFD Variable Frequency Drive Motor Controllers Medium Voltage 50 Hp

The frequency converter is mainly composed of rectification (converting AC power to DC power), filtering, inversion (converting DC power back to AC power), braking unit, driving unit, detection unit, and microprocessor unit. Its core working principle relies on the internal IGBT (Insulated Gate Bipolar Transistor) to dynamically adjust the voltage and frequency of the output power supply. In this way, the frequency converter can provide the appropriate power supply voltage according to the actual needs of the motor, thereby achieving energy-saving, speed regulation and other purposes.

Working Principle

• Rectification: Convert input alternating current into direct current.
• Filtering: Smooth the rectified DC power to reduce voltage fluctuations.
• Inverter: Convert direct current into alternating current with adjustable frequency and voltage, and supply it to the electric motor.
• Control: Through the internal microprocessor unit, dynamically adjust the voltage and frequency of the output power supply according to the actual needs of the motor, achieving energy-saving, speed regulation and other purposes.

Function

• Speed regulation: By changing the frequency of the output power supply, the motor can achieve stepless speed regulation.
• Energy saving: Provide power voltage according to the actual needs of the motor to avoid unnecessary energy consumption.
• Protection: It has multiple protection functions such as overcurrent, overvoltage, and overload to ensure the safe and stable operation of the equipment.

Environmental monitoring and adjustment

• Temperature and humidity:
  Ensure that the working environment temperature of the frequency converter is suitable, usually between -10 ℃~+40 ℃, to avoid excessive or insufficient temperature affecting the performance of the frequency converter.
  Maintain moderate humidity in the environment to avoid moisture affecting the internal components of the frequency converter.
• Ventilation and heat dissipation:
  Ensure that there is sufficient space around the frequency converter for ventilation and heat dissipation, and avoid installation in enclosed or poorly ventilated areas.
  Regularly check the operation of the cooling fan and replace it promptly if there are any abnormalities.

The degree of industrial automation is constantly improving, and we are also constantly enhancing our power electronics and microelectronics technologies on the basis of energy conservation. In the future, the performance of our frequency converter products will be more superior and the functions will be more complete.