【作者】 韩锋；

【导师】 谢少军；

【作者基本信息】 南京航空航天大学 ， 电力电子与电力传动， 2005， 硕士

【摘要】 本文主要针对模板化航空静止变流器直流环节进行研究,研究了推挽、ZVCS推挽谐振和 ZVS 推挽谐振三种电路方案。 首先简要分析了推挽变换器工作原理并进行了相应的仿真;其次详细分析了 ZVCS 推挽谐振变换器的工作原理,研制了 ZVCS 推挽谐振变换器样机,该变换器克服了推挽变换器变压器铁芯偏磁,开关管电压尖峰大等缺点,同时输入电流脉动减小,有利于整机效率的提高。最后深入研究了一种适合于稳压输出的 ZVS 推挽谐振变换器,详细分析了其工作原理,给出了其参数设计和控制方法,仿真和样机实验结果验证了方案的正确性。 通过对三种电路方案的比较,ZVS 推挽谐振电路具有输出电压稳定、效率高的特点,是模板化航空静止变流器直流环节的优选拓扑方案之一。本研究项目为实现高功率密度、高效率的航空静止变流器奠定了一定的基础。更多还原

【Abstract】 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.更多还原