Protection system for series-parallel converters, controllers, and transformers

Abstract

The invention proposes a series-parallel converter protection system, comprising a controller, a drive, a first switching transistor, and a second switching transistor. The input terminals of the converter are connected to the output terminals of the converter via the first switching transistor. The output terminals of the converter are connected in parallel with the second switching transistor, and the controller controls the switching on and off of the first and second switching transistors. When the output voltage of the converter exceeds the first threshold, the controller turns the first switching transistor off and turns the second switching transistor on. According to the design scheme. If the output voltage of the converter is greater than the first threshold, the controller switches the first switching transistor off and switches the second switching transistor on, so that the converter is bypassed, thereby preventing voltage and current from affecting the components of the converter. The invention also proposes a corresponding controller and converter.