Solar Inverter With Single Phase 48v

GI SERIES solar inverter with single phase 48v

     The switching power supply is to use the circuit to control the switching tube to conduct high-speed on and off.

     Convert the direct current into high frequency alternating current and supply it to the transformer for transformation, thereby generating the required one or more sets of voltages! The reason for switching to high-frequency alternating current is that the efficiency of high-frequency alternating current in the transformer transformer circuit is much higher than that of 50HZ. Therefore, the switching transformer can be made very small, and it is not very hot when working! ! The cost is very low. If the 50HZ is not turned into a high frequency, the switching power supply is meaningless.   

     The workflow of the switching power supply is:

      Power supply→input filter→full bridge rectifier→DC filter→switch tube (oscillation inverter)→switch transformer→output rectifier and filter.

      AC power input is rectified and filtered into DC

      The switching tube is controlled by a high-frequency PWM (pulse width modulation) signal, and that DC is added to the primary of the switching transformer

      The secondary side of the switching transformer induces a high-frequency voltage, which is rectified and filtered to supply the load

      The output part is fed back to the control circuit through a certain circuit to control the PWM duty cycle to achieve the purpose of stable output

      When the AC power is input, it generally needs to pass through something like a cyclone to filter out the interference on the power grid, and also filter out the interference of the power supply to the power grid;

      When the power is the same, the higher the switching frequency, the smaller the volume of the switching transformer, but the higher the requirements for the switching tube;

     The secondary of the switching transformer can have multiple windings or one winding has multiple taps to get the required output;

      Generally, some protection circuits should be added, such as no-load, short-circuit and other protections, otherwise the switching power supply may be burned.

      Mainly used in industry and some household appliances, such as televisions, computers, etc.

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