Hardware interface and theory of digital controller and velocity output are emphasized in hardware design section ; pwm wave producing module closely related chip structure is emphasized in software design section 硬件设计部分重点介绍了数字控制器和速度输出环节的硬件接口和工作原理；软件设计部分重点介绍了与芯片硬件结构紧密联系的pwm波形产生程序模块。
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Some resultants of two simulations for open loop and close loop conditions are given in this dissertation . all those works provided considerable significance and concrete helps for designing the circuit hardware of the system . a mathematical model for small signal analysis of the inverter used in pv grid connected systems is established . and two simulations based on this model for open loop and close loop conditions are also given in this thesis by help of simulink tool of the matlab software 使用matlab中的powersystemblocksets工具软件建立了单相光伏并网发电系统的动态模型，并进行了在开环和闭环两种情况下的仿真，给具体的硬件设计提供了极为有效的帮助；建立了光伏并网发电系统逆变输出环节的小信号模型，并使用matlab中的simulink工具进行了开环和闭环状态下的仿真。
