What is variable frequency power supply
What is variable frequency power supply
The double inverter power supply through AC-DC-AC transformation is called frequency conversion power supply, which is different from the frequency conversion speed regulation controller used for motor speed regulation, and is also different from the ordinary AC voltage regulation power supply. The main function of the frequency conversion power supply is to convert the current of the existing AC network into a stable and pure sine wave power supply with the required frequency. The ideal AC power supply is characterized by frequency stability, voltage stability, internal resistance equal to zero, and a pure sine wave voltage waveform (no distortion). Frequency conversion power supply is very close to the ideal AC power supply, therefore, more and more advanced developed countries use frequency conversion power supply as a standard power supply, in order to provide the best power supply environment for electrical appliances, to facilitate the objective assessment of the technical performance of electrical appliances.
There are two main types of inverter power supply: transistor amplifier and PWM switching type. DP series frequency conversion power supply, with microprocessor as the core, PWM production, sinusoidal pulse width modulation technology, so that the capacity of a single machine can reach 1000KVA, to isolate the transformer output to increase the stability of the whole machine, with strong load adaptability, output waveform quality, good operating waveform, easy operation, small size, light weight, etc. With short circuit, overcurrent, overvoltage, overheating and other protection functions to ensure reliable operation of the power supply.
Primary power supply
a. Conversion of other energy sources into electricity, such as hydroelectric, wind, and nuclear power generation.
b. That is, the supply of power (commonly known as power grid or mains).
Secondary power supply
a. That is, control the existing power supply.
b. In the process of power transmission, transform or stabilize the power between the power supply and the load.
Illustrate by example
AC — AC (AC — AC)
Example: Voltage regulator, uninterruptible power system, AC power supplier
Ac-dc (AC – DC)
Example: rectifier, DC power supply.
Dc-ac (DC-AC)
Example: Countercurrent
Dc-dc (DC-DC)
Example: DC power supplier
Special power supply or industrial power supply
a. Most of the input is AC mains;
b. Output has DC, AC, pulse and other forms;
c. Such as electroplating, electrolysis, welding, laser, high voltage and other power supplies.
Chemical Power Supply (DC-DC)
a. Usually the energy is stored in some form, and then converted into electrical energy to supply the load when used.
b. Such as various batteries.