中圖分類號(hào)： TP273+.3
文獻(xiàn)標(biāo)識(shí)碼： A
DOI：10.16157/j.issn.0258-7998.211862
中文引用格式： 劉伯明，張慶海，趙正旭. 光伏發(fā)電雙軸逐日跟蹤系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)[J].電子技術(shù)應(yīng)用，2022，48(4)：127-131.
英文引用格式： Liu Boming，Zhang Qinghai，Zhao Zhengxu. Design and implementation on dual-shaft daily tracking system for photovoltaic power generation[J]. Application of Electronic Technique，2022，48(4)：127-131.

Design and implementation on dual-shaft daily tracking system for photovoltaic power generation

Abstract： A dual-axis daily tracking system for photovoltaic power generation using STC12C5A60S2 single-chip microprocessor as the controlling core is developed to increase the photoelectric conversion rate of photovoltaic cells by combining two modes of automated tracking and manual adjustment. The manual mode has two modes: manual button control mode and wireless remote control mode; the automated mode has two modes: photoelectric tracking mode and day-dependent trajectory tracking mode. The cloudy and sunny detecting circuit is employed between the two modes to identify whether the weather is cloudy or sunny. When it is cloudy, the system calculates the real-time solar altitude and azimuth angle using the DS1302 clock chip and the super pairwise alignment(SPA) algorithm, and then tracks the sun′s course using the stepper motor. To perform photoelectric tracking on a sunny day, the system leverages the light intensity difference in the four directions acquired by the photoelectric sensor to drive the stepping motor. Experiments demonstrate that the hybrid control technique reduces weather effects, improves tracking accuracy, and increases photoelectric conversion rate.

Key words : dual-shaft daily tracking system；photoelectric tracking；day-dependent trajectory tracking；cloudy and sunny detection circuit