Design of Digital Battery Charger System Based on PV-Module

• Main Authors: Che-Nan Lin, 林哲男
• Other Authors: 陳大道
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/46974743188582261743

碩士 === 崑山科技大學 === 電機工程研究所 === 99 === This thesis aims to realize the solar cell charged systems of 150W PV(photovoltaic, PV) module with the dsPIC30F4011 control chip. All of the control schemes are written and accomplished with the C language. In the power converter, a single-ended primary inductance converter(SEPIC) is adopted which has the features including the buck-boost operating mode, no polarity inversion, low input current pulsation, and wide input voltage range, so, it is very suitable for the conversion of solar cell. In order to obtain the high efficient solar cell energy conversion, a fuzzy maximum power point tracking(MPPT) control is adopted if the solarization is insufficient. When solarization is sufficient and the available peak power of the PV module is enough to produce 0.1C charged current to battery, 0.1C charged current is set as command and a fuzzy controller is taken to maintain 0.1C charged current of battery. No matter solarization is sufficient or not, once the battery voltage is arrived at a predefine value, the predefine value charged voltage is set as command and the fuzzy controller is taken to maintain predefine value charged voltage of battery. The effectiveness of the proposed methods is demonstrated with the experimental result.