武汉理工大学毕业设计（论文）目录摘要.................................................................................................................................................1Abstract.............................................................................................................................................21绪论...............................................................................................................................................31.1电力电子技术的概述.........................................................................................................31.2开关电源的研究现状和发展趋势.....................................................................................31.3Buck斩波电路的研究意义...............................................................................................51.4论文的主要研究内容.........................................................................................................62Buck斩波电路的原理..................................................................................................................72.1Buck变换器的连续导电模式...........................................................................................82.2Buck变换器电感电流不连续的导电模式......................................................................102.3电感电流连续的临界条件...............................................................................................112.4纹波电压ΔUO及电容计算..............................................................................................122.5参数的计算.......................................................................................................................123Buck斩波电路的建模................................................................................................................143.1开关电路的建模...............................................................................................................143.1.1理想开关模型........................................................................................................143.1.2状态空间平均模型................................................................................................153.1.3小信号模型............................................................................................................173.2系统的传递函数...............................................................................................................183.2.1降压斩波电路的传递函数....................................................................................183.2.2PWM比较器的比较函数.....................................................................................203.2.3调节器的传递函数................................................................................................214控制电路的设计.........................................................................................................................224.1电压模式控制电路的设计...............................................................................................224.1.1电压调节器的结构形式........................................................................................224.1.2电压调节器的参数................................................................................................234.2控制电路结构.........
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