2023 How to Select Frequency Inverter?

A frequency converter is an electrical device that regulates the speed and power output of an electric motor. Frequency converters are widely employed in industrial production and daily life in a variety of industries such as mechanical manufacturing, petrochemical, construction engineering, and so on. Choosing an appropriate frequency converter is critical for assuring equipment performance and enhancing production efficiency. Below will introduce some key factors for selecting frequency converters.

1. Power consumption

The required frequency converter power must be determined. The power is determined by the regulated motor's rated power and load characteristics. To guarantee that the frequency converter can run normally and has overload capacity, the rated power of the frequency converter should typically be more than the rated power of the motor.

2. Method of control

Choose appropriate control mechanisms based on actual requirements. V/F control, vector control, and direct torque control are examples of common control methods. V/F control is appropriate for general loads, vector control is appropriate for loads requiring high torque precision, and direct torque control is appropriate for loads requiring high torque response speed.

3. Frequency spectrum

Choose a frequency converter based on the controlled motor's working frequency range. In general, the frequency converter's output frequency range should be able to cover the rated frequency range of the motor. At the same time, the frequency resolution and stability of the frequency converter must be considered.

4. Control precision

Choose a frequency converter based on the speed control accuracy requirements. For some applications that demand high speed accuracy, such as CNC machine machines, a frequency converter with high control accuracy is required.

5. Dependability and sustainability

Choose a frequency converter that is reliable and easy to maintain. The frequency converter's reliability comprises its anti-interference, overload, and fault self-diagnosis capabilities. Maintainability of frequency converters comprises defect diagnostics and ease of maintenance.

6. Budgetary considerations

Select a frequency converter based on your budget and cost-effectiveness. Consideration must be given to variables such as performance, quality, and after-sales support.

By carefully analyzing these variables, one can select a frequency converter that is appropriate for their specific demands, ensuring the equipment's normal operation and increasing production efficiency.