倍频单极性SPWM调制法逆变器设计.doc

------------------------------------------------------------------------------------------------ —————————————————————————————————————— 倍频单极性SPWM调制法逆变器设计 目 录 1 设计要求.................................................................................................................. 1 2 逆变器控制方式选择.............................................................................................. 1 3 方案设计.................................................................................................................. 2 3.1系统总体框图................................................................................................... 2 3.2主电路的设计................................................................................................... 3 3.3 DSP的选取 ...................................................................................................... 4 3.4驱动电路的设计............................................................................................... 5 3.5采样电路........................................................................................................... 6 3.6保护电路........................................................................................................... 6 4 元件参数计算 4.1输出滤波电感Lff4.2变压器的设计8 4.3功率开关的选择............................................................................................... 8 5 仿真结果.................................................................................................................. 9 5.1驱动波形........................................................................................................... 9 5.2功率开关器件两端的电压波形..................................................................... 10 5.3逆变器输出波形............................................................................................. 10 6 结论........................................................................................................................ 11 参考文献.................