| Summary: | 碩士 === 國立中山大學 === 電機工程學系研究所 === 103 === In this thesis, we build the stand-alone excited synchronous wind power generator system(SESWPGS). In the generator part of SESWPGS, we use a three-phase excited synchronous generator. By controlling the excited current , it can generate fixed voltage magnitude to the loads. Besides, if we control the speed of this generator, we can control the frequency of the electricity. Finally, it can generate the steady voltage with fixed magnitude and frequency.
The wind power generator system in this thesis is a coaxial coupling structure between the servo motor and the three-phase excited synchronous generator. By controlling the speed of the servo motor, we can control the frequency of the electricity which is generated by three-phase excited synchronous generator. By using fixed-voltage control strategy, we can control the excited current to control the voltage value which generated by this generator.
Because of random changes of the wind power, we add the power flow management control strategy(PFMCS) to SESWPGS. When the wind power is larger than the consumption of loads, we charge the redundant power to the battery. That can increase the utility rate of the wind power .
Furthermore, when SESWPGS startup and shutdown, we use startup and shutdown at optimum speed control strategy(SSOSCS). By controlling the speed of the servo motor in SESWPGS, we can avoid the electrical consumption of the servo motor during SESWPGS startup and shutdown.
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