Tag: frequency converter

Frequency Converter, also known as AC power supply/frequency changer, is an electric supply conversion device. It converts the alternating current in the electric supply through AC-DC-AC and outputs a pure sine wave. It converts the alternating current in the mains through AC-DC-AC and outputs a pure sine wave. In this article, ATO will introduce you to how to test a 9V transformer/IGBT/driver board in a frequency converter. In order to understand the testing process more clearly, we have posted a video explanation, please watch the video for more information.

Frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motor by changing the working power frequency of the motor. Inverter can provide the required power supply voltage according to the actual needs of the motor, so as to achieve the purpose of energy saving and speed regulation. With the continuous improvement of industrial automation, frequency converter has been widely used. In this article, we' re gonna tell the operating steps of our cabinet frequency converter.

What is the frequency converter? Frequency converter outputs the AC power to pure sine wave after the transformation of AC→DC→AC, the output frequency and voltage can be adjusted within a certain range. It is different from the variable frequency drive (VFD) used for motor speed regulation, and also different from the common AC regulated power supply. An ideal AC power supply is characterized by stable frequency, stable voltage, zero internal resistance and pure sinusoidal voltage waveform (without distortion). Frequency converter is quite close to the ideal AC power supply, so more and more countries use it as standard power supply to provide the best power supply environment for electrical appliances, so as to assess the technical performance of electrical appliances.

Correct selection of the frequency converter or frequency changer is crucial for the normal operation of electronic control system for mechanical equipment. To buy the frequency converter, according to the type of mechanical equipment, load torque characteristics, speed regulation range, static speed accuracy, starting torque and the requirements of the use environment, and then choose the suitable frequency converter.
Before selecting the frequency converter (AC power supply), we should firstly make clear the input mode of load, it is three phase or single phase? Secondly, determine the load characteristics, such as resistive load, inductive load, capacitive load, mixed load. Since different load characteristics will cause different inrush currents when the load starts, the influence of inrush current must be considered when buying the frequency converter, otherwise converter will not output normally.