C2000 参赛项目报告（命题组）题 目：基于 TMS320F2812 的光伏发电逆变系统 学 校：航空航天大学 指导老师：王成华（教授）洪峰（讲师） 参赛队成员（含个人教育简历）：益军、本科生、航空航天大学胡 超、本科生、航空航天大学丁 娇、本科生、航空航天大学基于 TMS320F2812 的光伏发电逆变系统益军 胡 超 丁 娇（航空航天大学信息科学与技术学院 210000）摘要：整个光伏发电逆变系统确定采纳全桥作为逆变器的拓扑结构；给出基于双闭环控制的系统传递函数，通过比较选择单极性混合正弦脉宽调制作为逆变器的调制方式；并在 SABER 软件下验证了整体设计方案的可行性。整个系统的硬件部分包括主电路、驱动电路、采样调理电路和保护电路，以与数字控制系统的硬件电路。基于 TMS320F2812 平台的逆变器软件设计则包括双闭环控制策略的数字 PI 实现以与 SPWM 的数字生成和 ADC 的软件校正等。最后的作品测试结果表明，逆变器的输出功率、系统效率、波形 THD、负载调整率等各项指标均满足要求，系统具有优异的稳态性能和动态性能。关键词：逆变器，DSP，闭环控制策略，SPWM Photovoltaic Inverter System based on TMS320F2812 Cuiyijun，Huchao，Kangchuanhua(College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics)Abstract：The Photovoltaic Inverter System is developed with full-bridge topology.It is proved to be with good steady-state characteristics and dynamic performance by analyzing the transmission function of the dual-loop control strategy. The hybrid SPWM modulation is chosen by comparing several classic modulation methods. The system solution is verified to be practicable through the Saber simulation.The whole system consists ofhardware designs such as main circuits, driver circuits, sample and signal conditioning circuits, protecting circuits and the software designs such as the realization of PI control strategy and the rectification of the ADC precision in TMS320F2812. Finally, the experiments on the system indicate that all the performance including the ou...
