Novel Voltage-Boosting Converter with Solar MPPT Improved

• Main Authors: Jhih-Siang Ciou, 邱致翔
• Other Authors: 胡國英
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/33tx8f

碩士 === 國立臺北科技大學 === 電機工程系研究所 === 99 === In this thesis, a novel voltage-boosting converter with solar maximum power point tracking (MPPT) improved is presented. For the proposed MPPT control to be considered, there is a voltage/current judgment algorithm to be added to the MPPT control algorithm, so as to reduce the error in MPPT judgment at startup and hence to reduce the time interval required by MPPT from the startup to the steady state. Furthermore, without changing the switching frequency, the oscillation in the vicinity of the maximum power point can be reduced so as to decrease the corresponding power dissipation, by reducing the pulse width modulation (PWM) resolution created from the field programmable gate array (FPGA). However, by doing so, the time interval required by MPPT from the startup to the steady state is to be increased. Consequently, a comparison between time interval and power dissipation is indispensable. On the other hand, for the proposed voltage-boosting converter, it combines the charge pump concept and different types of energy released in series at the same time to upgrade the voltage conversion ratio. In the thesis, first of all, the simulation software called Matlab/Simulink is used to verify the feasibility of the proposed converter. Secondly, the FPGA chip named EP1C3T100C8 made by Altera Ltd. is used as a control kernel of the overall system. Thirdly, some experimental results are provided to demonstrate the effectiveness of the proposed converter. Finally, via the PV simulator named PVS01203 made by Kernel Ltd., some experimental results are provided to verify the effectiveness of the proposed topology.