Smart Cloud AC Power Supply

Abstract

The invention discloses an intelligent cloud AC power supply, which comprises a main controller, a voltage sampling circuit and a current sampling circuit, wherein the voltage sampling circuit is connected to a DDS waveform generator; the DDS waveform generator is connected to an SPWM modulator; the SPWM modulator is electrically connected to an IGBT drive; the DDS waveform generator and the IGBT drive are electrically connected to the main controller; the voltage sampling circuit is connected with the current sampling circuit; the current sampling circuit is connected to the main controller; and the voltage sampling circuit collects voltage analogue quantity, the current sampling circuit collects current analogue quantity, and the frequency and the phase are processed through the DDS waveform generator to output an analogue waveform. A pulse modulation mode is adopted by the SPWM modulator; an output end is taken as input of the IGBT drive; the IGBT drive can adjust output voltage and a frequency setting range according to a control signal of the main controller.

Description

technical field [0001] The present invention relates to the technical field, in particular to a single-phase SFC-3 smart cloud AC power supply. Background technique [0002] With the rapid development of the information industry and the rapid expansion of the high-tech industry, the AC power supply has become a power supply device for a large number of electronic devices. Most precision electronic instruments and communication equipment need to rely on high-quality power supply to maintain normal operation. [0003] Traditional AC power supplies rely on an inverter to convert the boosted DC voltage into an output AC voltage that can be supplied to a load (not shown). Generally speaking, the output AC voltage of the power supply is a square-wave AC voltage, which will cause damage to inductive loads, such as transformers or electromotors. Therefore, an advanced power supply usually must provide a sinusoidal-wave output AC voltage output to ensure the normal operation of the...

AI Technical Summary

Problems solved by technology

However, in order for the power supply to output a sine wave AC voltage, the power supply needs complex circuit design to achieve it, resulting in an increase in the cost of the power supply

At the same time, complex circuit design will also increase the power loss of the power supply

In addition, the current AC power supply does not have a programmable function, and the output voltage and frequency are fixed values, which cannot be freely adjusted according to needs

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