摘要
针对传统光伏发电系统中太阳能利用率低的问题,采用以ARM Cortex-M3为内核的STM32F103作为系统的主控芯片,并以GPS和四象限光电传感器作为太阳跟踪装置,设计了一种新的太阳能自跟随系统。首先利用视日运动轨迹法进行初步跟踪,然后将光电传感器采集到的信号经过调理电路处理后送给MCU控制器,使其产生PWM波来精确控制对应的双轴步进电机在水平和俯仰方向分别进行调整,从而实现光伏发电板对太阳的全自动跟踪。实验结果表明,该系统具有跟踪精度高,运行稳定和成本低廉等优点。
Aiming at a problem of low availability of traditional photovoltaic system,taking STM32F103 whose core is Cortex-M3 as the system′s main chip,and taking GPS as well as4-quadrant photoelectric sensor as the solar tracing device,and designed a new solar automatic tracing system.Firstly,take use of sun movement method to track roughly,then send the signal of photoelectric sensor to micro control unit after dealt with by adjust circuit,the MCU generate PWM waves to control biaxial stepper motor to adjust in the horizontal and vertical separately,so that the photovoltaic array could track the sun automatically.The experimental results show that,the control system has high tracing accuracy and operate stably and cost a litter,etc.
出处
《电子测量技术》
2017年第12期160-164,共5页
Electronic Measurement Technology
