The 400HZ frequency conversion power supply converts household AC power through AC→DC→AC conversion, outputting a pure sine wave. The output frequency and voltage are adjustable within a certain range. It differs from frequency conversion controllers used for motor speed regulation and from standard communication voltage regulators. The ideal communication power supply is characterized by stable frequency, stable voltage, zero internal resistance, and a pure sine wave voltage waveform (no distortion).
Inverter power supplies are very close to an ideal communication power supply, capable of outputting any grid voltage and frequency. An inverter is composed of circuits such as modulation waves (communication-direct communication), and its standard name should be a variable frequency speed controller. The waveform of its output voltage is a pulse square wave, with a high harmonic content. The voltage and frequency change simultaneously in proportion, and cannot be adjusted separately, which does not meet the requirements of a communication power supply.
Variable frequency power supplies are very close to ideal communication power supplies, thus, increasingly advanced and developed countries are using variable frequency power supplies as standard power supply sources to provide a good power supply environment for electrical appliances, facilitating the objective assessment of their technical performance. Variable frequency power supplies mainly consist of two types: linear amplifiers and SPWM switching types.
The Variable Frequency Power Supply is a circuit consisting of a communication device that alternates between DC and communication with a filter, and it has been widely utilized. The Variable Frequency Power Supply not only simulates different grid targets for output but also provides pure and reliable, low harmonic distortion, and high stability sine wave power supply outputs for export electrical manufacturers during design, development, production, and testing.
