中文摘要：

为了提高系统的性能，给出了基于FPGA的交流伺服系统功率主回路的设计方法，并对主回路中具体参数进行了计算，根据所设计的主回路对系统进行了仿真，仿真结果表明功率主回路的设计是可行的，基于FPGA的交流伺服系统具有良好的性能。

英文摘要：

In order to improve system＇s performance, the design method ofAC servo system power main circuit based on FPGA is given and the specific parameters of the power main circuit are calculated. According to the designed power main circuit, system simulation is carried out and the simulation results show that the design of power main circuit is feasible, and the AC servo system based on FPGA has good performance.