The difference between frequency converter and inverter and the application range of frequency converter

What is the function and purpose of the frequency converter?
The frequency converter is an electronic device whose main function is to convert fixed-frequency alternating current into adjustable-frequency alternating current to control the speed and operating efficiency of the motor. The role of the frequency converter can be summarized in the following aspects:

Energy saving and consumption reduction: By adjusting the motor speed to make it run in the optimal load range, reduce the energy consumption and loss of the motor.
Precise control: The inverter can precisely control the speed and output power of the motor according to the demand, so as to meet the requirements of the motor operation in the production process.
Protection equipment: The inverter can protect the motor, such as over-current protection, under-voltage protection, etc., to avoid the occurrence of equipment overload and damage.
Expand the application range of the motor: A motor can be applied to a variety of different loads and working conditions through the frequency converter, which expands the use range and flexibility of the motor.
The working principle of the inverter is mainly to use electronic technology to convert the input AC power into DC power, and then convert the DC power into AC power with controllable frequency and voltage and output it to the motor to realize the adjustment and control of the motor speed.

Can I use a VFD as a frequency converter?
Variable Frequency Drive (VFD) and Variable Speed Drive (VSD) are two types of drives used for different motors. VFD drives are only compatible with alternating current (AC) motors. VSD drives can be used with AC or DC motors.
A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor. Other names for a VFD are variable speed drive, adjustable speed drive, frequency converter, AC drive, microdrive, and inverter.
Frequency (or Hertz) is directly related to the rotational speed (RPM) of the motor. In other words, the faster the frequency, the faster the RPM. If the application does not require the motor to run at full speed, a VFD can be used to reduce the frequency and voltage to meet the requirements of the motor load. As the application's motor speed requirements change, the VFD can simply turn up or down the motor speed to meet the speed requirement.

What is the difference between a frequency converter and an inverter?
What is a frequency converter? Introduction to frequency converter: mainly to change the frequency. The inverter is mainly composed of rectification (AC to DC), filter, inverter (DC to AC), braking unit, and so on. Frequency converters contain inverters. The frequency converter can achieve energy saving, speed regulation, improve the motor running accuracy, low speed and high torque, fast start, and stop, stable speed, step-less speed change, etc. In addition, the frequency converter also has various protection functions, such as over-current, over-voltage, Overload, Undervoltage, undercurrent protection, etc.

Inverter Introduction: The inverter converts DC power into AC power, for example, the power of the battery on the battery car is converted into AC power to drive the motor. It consists of an inverter bridge, control logic, and a filter circuit.
The difference between frequency converter and inverter:

1. The inverter converts direct current into alternating current. Inverter A component that changes the frequency of alternating current.

2. The inverter converts DC power into AC power (generally 220V, 50Hz sine wave), and the frequency can also be adjusted; the frequency converter converts the input AC power into the AC output of the required frequency; its principle is "AC-DC-AC "Or "cross-cross", "cross-straight-cross" is more common. The frequency converter includes the inverter, which is a combination of "rectification + inverter".

3. The frequency converter must have a part to adjust the frequency, which can realize step-less speed regulation, while the inverter only needs to have a fixed output frequency.

Inverter application
The use of VFDs is widespread in many industrial and commercial applications.
– In industrial applications, VFDs are used to control extruders, electric cranes, roller coasters, and mechanical bulls, there are many applications!
– In commercial applications, VFDs are widely used in pumps to control the flow and even volume in water tanks, and in the HVAC industry, and are considered energy-saving and environmentally friendly technologies.
– In the power industry, inverter products play an important role throughout the entire power generation process. Wind power generation, hydropower generation, coal-fired power generation, garbage cleaning, and exhaust emission can all use frequency converters.
-In the oil and gas drilling and production industry, frequency converters can be applied to load-type motors in the oil and gas drilling and production industry, such as gas compressors, water injection pumps, pumping units, oil delivery pumps, and submersible pumps, etc., which can greatly save energy and reduce emissions.
-In the building materials industry, inverters are mainly used in motors such as pulverizers, blowers, exhaust fans, rotary kilns, and conveyors. With the development of technology and the advancement of ideas, we now pay more and more attention to environmental protection, energy saving, and emission reduction, so the demand for high-power inverters in the building materials industry is increasing year by year.
-In the coal industry, if you want to improve the level of automation, you need to develop high-tech, and a frequency converter is one of them. It is used in mine hoists, and the energy-saving effect is very significant. It can not only improve the automation level and transmission capacity of the motor but also reduce the consumption of electric energy.