太阳能高压气体放电灯智能控制系统

Intelligent control system for photovoltaic lighting with high pressure sodium lamps

为了提高太阳能高压气体放电灯照明效率,延长照明时间,实现智能充放电控制、智能照明控制,提出一种新型太阳能高压气体放电灯照明控制系统。系统充电控制策略实现了最大功率点跟踪技术和蓄电池三段式精确充电,照明控制策略采用变开关频率控制和恒功率控制。硬件结构采用单级式逆变结构,减少了硬件成本开销,提高了能量转化率。实验结果表明:该系统延长了蓄电池寿命及点灯时间,提高了电灯效率,效率达90%以上,使得太阳能高压钠灯照明系统智能、高效、稳定的运行。

An intelligent control system for photovoltaic lighting systems was developed to enhance the photovoltaic lighting system efficiency and prolonging the lighting time through intelligent control. Maximum power point tracking technology （MPPT） and a precise charging control strategy was used with a variable switching frequency and a constant-power control strategy. A single-state inverter was used in the lighting circuit to enhance the system energy transformation efficiency and lower the cost. Experimental results show that the control strategy significantly enhances the performance of the photpvoltaic lighting system with the high pressure sodium lamps with system efficiencies above 90%.