PURE SINE WAVE INVERTER FOR SOLAR AND WIND SYSTEM WITH OFF GRID SINGLE PHASE WITH CHARGER

Pure sine wave inverters have strict functional parameter requirements and are more expensive, and are used for electronic circuits with high requirements for waveform parameters. And ordinary inverter is a heterogeneous waveform of sine wave, square wave and miscellaneous wave components, which can be used for general appliances and has lower price
Sine wave inverter input
It is usually DC power obtained by rectifying and filtering DC power. This power cannot be directly used as the input side voltage of the inverter, but is used as the input of the inverter only after passing through certain filtering circuits and EMC circuits.
Inverter main circuit
A power conversion circuit composed of power switching devices, the main circuit form varies for different input and output conditions
Control circuit
Through certain control techniques, one or more sets of pulsed voltages are generated to turn on or off the power switching tubes in a specified sequence, resulting in the desired voltage waveform at the output of the main circuit. The role of the control circuit is crucial to the inverter system, and the performance of the control circuit directly determines the quality of the inverter output voltage waveform
Output Circuit
According to whether the output needs a voltage regulator circuit, the output circuit can be divided into open-loop and closed-loop control. The output of the open-loop system is only determined by the control circuit, while the output in the closed-loop system is also influenced by the feedback loop to make the output more stable
Auxiliary power
Usually the auxiliary power supply consists of one or several DC-DC converters, for the AC input, the auxiliary power supply from the rectified voltage and DC-DC converter combination to complete
Protection Circuitry
There are other protections for inverters working in specific applications, such as air pressure protection in case of certain air pressure changes, humidity protection in humid environments, etc.