| Summary: | 碩士 === 國立高雄應用科技大學 === 電機工程系博碩士班 === 102 === This thesis presents a digital microcontroller-based optimal design and hardware implementation of grid-connected inverter for wind-power generation system. The main contents comprised of simulated permanent magnet synchronous generator, active-clamp flyback converter, and single-phase full-bridge inverter in order to achieve hardware implementation of grid-connected system. The research is by boosting low voltage to high voltage by active-clamp flyback converter, then full-bridge inverter makes DC to AC. Furthermore, Inverter’s output AC voltage completed by digital phase lock loop. In the process of grid-connected, grid voltage and grid current are intercepted and sent to digital controller. Through PID controller, it produces SPWM signals to switch MOSFETs. Experiment results show that the system can achieve grid’s current in-phase with the voltage. Finally, simulating grid-connected system by using optimal design is able to reduce total harmonic distortion and reactive power. It is also useful to increase the performance of the single-phase full-bridge grid-connected system.
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