12v24v Hybrid Solar Inverter With MPPT Controller

NX series 12v24v hybrid solar inverter with MPPT controller

      Compared with the linear power supply, the more effective working process of the PWM switching power supply is realized by "chopping", that is, the input DC voltage is chopped into a pulse voltage whose amplitude is equal to the input voltage amplitude. The duty cycle of the pulse is adjusted by the controller of the switching power supply. Once the input voltage is chopped into an AC square wave, its amplitude can be stepped up or down through a transformer. The output voltage value can be increased by increasing the number of secondary windings of the transformer. Finally, these AC waveforms are rectified and filtered to obtain a DC output voltage.

     The main purpose of the controller is to keep the output voltage stable, and its working process is very similar to the linear form of the controller. That is to say, the functional blocks of the controller, the voltage reference and the error amplifier, can be designed to be the same as those of the linear regulator. The difference between them is that the output of the error amplifier (error voltage) goes through a voltage/pulse width conversion unit before driving the power tube. There are two main working modes of switching power supply: forward conversion and boost conversion. Although the layout of their various parts differs little, the working process varies greatly, and each has its own advantages in specific applications.

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