As technology advances, electrical appliances are constantly being updated, and auxiliary equipment also changes. Let's take a closer look at the differences between frequency converters and frequency converter power supplies.
What is a frequency converter?
Variable frequency drive (VFD) uses inverter technology and microelectronics to change the operating power frequency of a motor in order to control the power control unit of an AC motor.
An inverter mainly consists of a rectifier (AC to DC), an inverter (DC to AC), a braking unit, a drive unit, a detection unit, and a microprocessor unit. The inverter regulates the voltage and frequency of the output power supply through internal IGBT switches, providing the required power voltage according to the actual needs of the motor to achieve energy-saving speed regulation. In addition, the inverter includes multiple protection functions such as overcurrent, overvoltage, and overload protection.
What is a variable frequency power supply?
An inverter power supply converts the AC power from the main power supply into AC → DC → AC to a pure sine wave output, and the output frequency and voltage can be adjusted within a certain range. It differs from frequency converters used for motor speed control and ordinary AC voltage regulators.
In China, frequency converters are commonly referred to as AC power frequency converters, often called AFC. With the development of electronic equipment, the entire history of frequency converter development has essentially been one of evolution.
Difference between frequency converter and frequency converter power supply
Inverter power supplies and inverters are two products with different uses. An inverter power supply is a power supply that can regulate voltage and frequency. An inverter is used only as a speed control device when the motor is running.
The inverter outputs a standard sine wave and is equipped with multi-functional integrated devices to provide power for various electronic, electrical, mechanical manufacturing, and laboratory testing applications. Output voltage and frequency can be independently adjusted online.
The inverter's output voltage frequency cannot be adjusted. If there are control devices such as circuit boards at the back end, the load can only be a motor, and the output is a pulse square wave, which cannot be used as a power supply PLC. All high-precision control hardware can penetrate the device.
