| Summary: | 碩士 === 國立臺灣大學 === 電機工程學研究所 === 96 === As the issue of environmental protection receives increasing attention and the price of fuel increases, renewable energy source, such as wind turbine generator system, is getting more and more important. Three phase induction generators are the main source of the power. Induction machines have unsatisfactory voltage regulation and the wind speed is variable. Hence, in this thesis, a static synchronous compensator is applied to supply reactive power for the system, to regulate bus voltage, and to achieve better voltage profile on the customer side.
The static synchronous compensator employs a direct current capacitor to offer voltage source and use the pulse-width modulation technique to adjust the output voltage of the three phase voltage source inverter.
The effectiveness of the STATCOM is investigated by simulations using the MATLAB/Simulink software and experiments. In the experiments, the controller of the STATCOM is based on a personal computer with Adventec PCL-1800 data acquisition cards. Digital control is implemented using C language. Finally, it is concluded from results of simulations and experiments the load bus voltage in a grid-connected induction generator can be effectively regulated by the STATCOM.
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