| Summary: | 碩士 === 南台科技大學 === 電機工程系 === 101 === Taking energy crisis and more-severe environmental pollution into
consideration, all countries around the world actively invest human resources and
capitals in developing renewable energy sources that can be used sustainably and
cause no pollution. Among various renewable energy sources, wind energy and solar
energy are the most commonly promoted and valued sources.
This study uses microcontroller output PWM signal of Renesas SH7125 and
adopts IGBT as the switch. Booster circuit and buck circuit are utilized to control
output voltage and current of solar cell so that work point of solar cell can be
maintained as maximum power point. In this study, we choose “perturbation and
observation” from various MPPT rules to implement it in practice. We conduct
maximum power point tracking by comparing perturbation work point with previous
work point, so as to make the work point close to maximum power point to the
greatest extent. Moreover, in this study, we use the same algorithm for both booster
and buck modes, and thus investigate whether this algorithm is feasible in booster
and buck modes.
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