逆变器.pdf

目 录 一、概述.........................................................................................................................................................3 1、逆变器的定义...................................................................................................................................3 2、逆变技术的发展趋势.......................................................................................................................4 3、逆变器的主要技术指标...................................................................................................................5 二、单相电压源逆变器.................................................................................................................................5 1、推挽式逆变电路...............................................................................................................................6 2、半桥式逆变电路...............................................................................................................................7 3、单相全桥逆变电路...........................................................................................................................8 3．1 移相调压法............................................................................................................................9 3．2 脉宽调节法.........................................................................................................................10 4、单相方波逆变器的输出波形分析.................................................................................................11 5、单相全桥正弦波逆变技术.............................................................................................................13 5．1 单极性正弦波脉宽调制方式..............................................................................................13 5．2 双极性正弦波脉宽调制方式.............................................................................................16 6、实用电路.........................................................................................................................................25 三、三相逆变器...........................................................................................................................................26 1、三相电压型逆变器.........................................................................................................................26 1.1 三相电压型方波逆变器.........................................................................................................27 1.2 三相电压型 SPWM 逆变器基本原理..................................................................................30 1.3SPWM 波形生成技术............................................................................................................31 1.4 双极性调制及逆变器输出电压............................................................................................32 1.5 自然采样法............................................................................................................................36 1.6 规则采样法............................................................................................................................38 1.7 消除有限次谐波的 PWM 调制方法....................................................................................39 1.8 过调制问题............................................................................................................................41 2、三相电流型逆变器.........................................................................................................................42 四、带高频环节逆变技术...........................................................................................................................45 1、概述 ………………………………………………………………………………………………45 2、高频 DC-DC 变换器......................................................................................................................45 2.1.不隔离型直流斩波器.............................................................................................................45 2.1.1 降压斩波电路.............................................................................................................46 2.2.2 升压斩波电路..............................................................................................................54 2.2 隔离型DC-DC变换器.........................................................................................................63 2.2.1 基本电路的动作说明.................................................................................................64 2.3 后级DC-AC 逆变器...........................................................................................................71 2.3.1 概述.............................................................................................................................71 2.3.2 逆变器的设计规格......................................................................................................72 2.3.3 基于DSP 逆变器的优势.............................................................................................72 2.3.4DC–DC 推挽变换部分..............................................................................................73 五、逆变器的组合、并联、多重叠加和多电平技术...............................................................................74 1、概述 ………………………………………………………………………………………………74 2 1.1 逆变器的组合.........................................................................................................................74 1.2 逆变器的并联........................................................................................................................83 1.2.1 概述..............................................................................................................................83 1.2.2 并联技术的现状..........................................................................................................84 1.2.3 并联逆变的关键技术——均流和同步......................................................................94 1.3 逆变器的多重叠加.................................................................................................................96 1.3.1 单相串联多重叠加技术..............................................................................................96 1.3.2 三相逆变器的多重叠加技术....................................................................................107 1.4 逆变器的多电平变换技术...................................................................................................114 1.5 二极管箝位型三电平变换...................................................................................................114 1.6 二极管箝位型五电平变换...................................................................................................119 六 、并网型逆变技术.................................................................................................................................123 1、光伏并网逆变技术.......................................................................................................................123 1.1 引言.......................................................................................................................................123 1.2 小型光伏电路......................................................................................................................124 1.3 正弦波电压的实现..............................................................................................................124 1.4 大型光伏并网发电技术......................................................................................................127 2、风机并网发电技术.......................................................................................................................128 2.1 概述.......................................................................................................................................128 2.2 变速风力发电机组中的逆变器..........................................................................................131

学习了，谢谢了。好贴，该顶的。