0%
Number of views:136
The front stage of a photovoltaic inverter often needs to be boosted first, and then the inverter is carried out to reduce the inverse bulk density and loss efficiency. However, high-frequency also faces many problems, such as the susceptibility of electromagnetic interference driving signals being affected. Soft switching technology is introduced, where capacitors are connected in series on the high-voltage side of the inverter to form a series resonant circuit with leakage inductance. However, the series resonant frequency rate is much higher than the switching frequency, which will reduce the power supply voltage and efficiency. If the resonance is at the switching frequency, soft switching cannot be achieved, and large electrical peaks are generated at the same pole, which may cause MOS transistor failure. The comprehensive push-pull selects the open-loop working mode to achieve soft switching of the maximum resonance parameter of the working frequency SG35, thereby achieving efficiency