独立、并网双模式户用光伏发电装置的研究与设计

针对户用光伏发电系统的特点和要求进行了系统的研究与设计。系统设计将独立逆变与并网逆变相结合,使系统既可以工作在独立逆变状态,为负载提供正弦交流电源,也可以工作在并网逆变状态,将太阳的能量或蓄电池的能量回馈到电网。本系统采用TI公司32位定点DSP芯片TMS320F2812为控制核心,利用PIC16F877A单片机构成系统的人机操作界面。本文所设计的系统具有完善的保护功能、键盘监控和液晶显示、串口通讯功能,为家庭使用提供了方便。实验结果验证了方案的可行性。

Research and design on household photovoltaic power generation system with stand-alone and grid-connection operation mode

According to the characteristics and requirements of Household Photovoltaic Power Generation system,a PV system was researched and designed in this paper.The PV power generation system designed works in Stand-alone or grid-connected mode.A Sinusoidal AC power is supplied to the load if it works in stand-alone mode.Simultaneously,solar energy is feedback to the grid if it works in grid-connected mode.The control core is based on TI company 32-bit fixed-point DSP TMS320F2812.Human-machine interface is designed with the MCU of PIC16F877A.With perfect protective measures,monitor keyboard and SCI communication functions,The PV system presented is convenient to household using.