【摘要】 提出了一种新型的智能化小区大功率Light Emitting Diode(LED)路灯光伏充电器的设计思想,给出了白光LED的工作特性和太阳电池的工作特性以及此光伏充电器的主电路拓扑结构,分析了基于Microchip公司的PIC16F874芯片实现的控制策略和最大功率跟踪(MPPT)原理。最后给出了此充电器的工作原理框图和控制原理框图。实际运行表明,该LED路灯光伏充电器系统具有显著优点。更多还原

【Abstract】 A new design for high-power photovoltaic charger of LED street lamp for intelligentized community was given;working characters of LED and solar battery,and main circuit topological structure of the photovoltaic charger were shown.Control strategy and maximal power point tracking(MPPT)were analyzed based on PIC16F874 CMOS chip that was produced by Microchip Company.Lastly,circuit principle figure and control principle figure for the photovoltaic charger were given.The actual working shows that the photovoltaic charger of LED street lamp has excellent performance.更多还原