| Summary: | 碩士 === 國立臺灣大學 === 電機工程學研究所 === 89 === The thesis describes the implementation of the solar cell based power supply system for home use. The system contains two kinds of operation modes, independent-supply mode and parallel-to-utility mode. In the parallel- to-utility mode, the solar energy can be converted into AC power and fed into the utility by the inverter stage, also adapts to the characteristics of the solar cells and achieves maximum power point tracking operation. However, for the utility malfunction, system can soon detect automatically and switch to the independent- supply mode operation. In the independent-supply mode, system can supply constant voltage source for the household appliances requirements.
The Proposed system controller is implemented by a low-cost micro- processor 80196MC. The hardware is designed for the 4kW application and the household requirements. Due to the fully-digitized control and the power module structure, not only the circuit can be simplified, but also the system reliability can be improved. On the other hand, built-in perfect protection that prevent system from being damaged should the utility malfunction or be over stressed. Finally, experimental results are provited to verify the theoretical discussion and design procedure of this system.
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