| Summary: | 碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 105 === This study proposes to improve performance of hybrid PV system (HyPV). First, we fed the charge current to the Si-lead battery in pulses to determine the long-term performance and discussed the effects of a pulse charging technique on charge–discharge behavior and cycling characteristics of Si-lead battery. On the other hand, to implement technology of PV panels directly charge battery without limiting current, we constructed power generation model by Matlab to verify and analyse.
In the Si-lead battery part, there were four different charging methods including the constant current (CC), pulse frequency of 500 Hz, 1000 Hz and 2000 Hz used under room temperature and high temperature. The results show that the charging curve of pulse charging methods was slightly smooth and the aging speed of battery was slow under the room temperature. Besides, it could extend cycle life of the battery by pulse charging technique under the high temperature.
In the simulation part, to reduce electricity energy loss, we used unlimited current to implement the technology of PV panels directly charge battery. We found out the optimal maching on hybrid solar power generation systems by anaylise of economy. Furthermore, adding one-axis maximum power generation technique (1A-MPG) on the system the value of this directly charge technology could be raise.
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