Research On Push-Pull Resonant Converters

The thesis focused on the DC link topology of the modularization aviation static converter. First, the push-pull converter is developed. Then, the principle of ZVCS push-pull resonant converter is analyzed in detail. It has the advantages of preventing the high voltage spike of the switches and restraining magnetism deflection of the transformer in low-voltage/high-current situation. So push-pull forward converter can get higher efficiency than push-pull converter. At last, a ZVS push-pull resonant converter is presented. The switches of the ZVS push-pull resonant converter can realize zero voltage turn on and the output voltage of this converter is regulated. The principle of the ZVS push-pull resonant converter is analyzed in detail. Simulation and experimental results in that the novel converter is feasible. Through the comparison of three schemes, the ZVS push-pull resonant converter is one of the best DC link topology for the modularization aviation static converter. This researching project lays the technical foundation on high power density and high efficiency aviation static inverter.