| Summary: | 碩士 === 聖約翰科技大學 === 電機工程系碩士班 === 98 === This thesis presents the design, analysis, and implementation of the grid-connected inverter for renewable power system. The inverter would convert DC power that simulate the photovoltaic(PV) or fuel cell into AC power and connect to the utility system to distribute the power plants.
For the design of inverter, this thesis proposes an implementation of DSP-based controller, full-bridge structure, voltage/current feedback circuit, zero crossing circuit to establish it. The inverter included the functions of over/under frequency protection and low input voltage protection, furthermore, its constant power produced 400W and efficiency has reached 88.89% while fully-loading. The output currents of inverter could be modulated by an index command (Iref) which was maximum value produced from the PV, wind or fuel cell power module in addition to provide the whole renewable power into Utility.
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