Design of the Dual-Axis Solar Tracker System

• Main Authors: CHANG KAI-LAN, 張凱嵐
• Other Authors: Yu-Shiang Wu
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/88469574269071115131

碩士 === 中華科技大學 === 機電光工程研究所碩士班 === 103 === Solar energy is inexhaustible natural energy, how to reduce set-up costs and improve power generation efficiency of solar tracker system, has been the focus of the research. In different solar photovoltaic technology, the high concentrated photovoltaic system (HCPV) with a high-power III-V solar cells reduced the cost of photovoltaic power generation is one major method. The III-V solar cells absorb the direct solar, which receives the angular average between 0.3˚~0.8˚ and therefore requires high precision control of the solar tracker, to achieve the best power efficiency. This design of solar tracker system for azimuth and elevation axis movement pattern is used with gear reduction mechanism to achieve the reduction ratio of 89.1 times. The tracking way is the light sensor to track the trajectory of the program and solar hybrid, and uses DC motors to drive gear to achieve high accuracy control. Using Pro-E software for mechanical design with 60 Kg trackers can be solar modules; azimuth rotation range of 240˚, elevation rotation range is 0˚-85˚. Tracker outdoors before testing, required level meter for horizontal positioning, and then use a compass for the south-east orientation. The high precision angle measurement equipment uses the Green Mount interpretation deviation angle. Experimental data show that this solar tracker's average track deviation angle is less than 0.2˚, 0.4˚ maximum deviation angle is also less, in line with the original design goals (accuracy of less than 0.5˚), so this study active recovery day, which can be with the acceptance angle of 0.5˚ HCPV modules on the future design of large scale high precision solar tracker is a considerable reference value.