戶用多功能光伏發電系統的研究與設計

摘要：本文針對戶用光伏發電系統的特點和要求進行了系統的研究與設計。將獨立逆變與并網逆變相結合，使系統既可以工作在獨立逆變狀態， 將儲存在蓄電池組中的能量直接逆變為正弦交流電為負載供電， 也可以工作在并網逆變狀態， 將太陽能量直接回饋到電網或者將儲存在蓄電池中的多余能量回饋到電網。系統采用32位DSP芯片TMS320F2812構成控制核心，利用單片機PIC16F877A構成系統的人機界面。設計的系統具有完善的保護功能、鍵盤通訊和液晶顯示功能， 為家庭使用提供了方便。實驗結果驗證了方案的可行性。 敘詞：光伏發電 獨立逆變 并網逆變 人機界面 Abstract：This paper provides system research on and design of photovoltaic power generation system. It combines independent inverter and grid-connected inverter, so that the system can function under independent inverter condition, which inverts directly power in the battery into sinusoidal AC power to load power, and it also can function under grid-connected condition, which can turn solar power into the grid or turn surplus power in battery to the grid. The system adopts 32 digits DSP chip TMS320F2812 as its control center, and applies SCM PIC16F877A as its human-machine interface. The system has complete protection function, keyboard communications and LCD, which makes it convenient for household use. Lab experiments prove the feasibility of the scheme. Keyword：Photovoltaic Power Generation, Independent Inverter, Grid-connected Inverter, Human-machine Interface