Integrated switching power supply technology with the maximum power point tracking method to improve the efficiency of the solar power system

• Main Authors: Chien-Hung Lai, 賴建宏
• Other Authors: 黃育賢
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/3rrgpw

碩士 === 國立臺北科技大學 === 電資碩士班 === 100 === Although governments vigorously solar power, so far the effect is unsatisfactory. There are two main reasons: First, the solar panels must be installed in the wide space as possible, most cases are not easy to do. Second, many studies to improve the efficiency of solar energy always focus on maximum power point tracking, which is method for seeking maximum power output that solar panels can achieve. However, solar panels are only part of system, resulting in the loss of other parts still reduce the efficiency. In this study, based on a new patent in Taiwan and China - solar charging device, boost the voltage to reduce the conduction losses. It also makes solar panels can be arranged in parallel, and better meet the style and space limitations. But it has two shortcomings. First, switching power supplier usually use numbers of high-capacity electrolyte capacitors, the electrolyte capacitors vulnerable to environmental effects and impairment. Second, output of the device is still direct current, but the majority of home appliances products adopt analog current power. So, we integrated switching power supply technology and maximum power point tracking both, detect maximum power points by multi-stages idea, then boost the output to higher voltage for inverter. Thus, solar panels’ output will be applied continuously. At the end, the result not only reduced the conduction losses to improve the efficiency of solar power system, which helps to reduce the amount of solar panels, but also provided a feature to isolate direct and analog current power for safety matter.