本論文旨在研製市電併聯型變流器系統，並採用電流修正控制機制將電能有效地饋入電網。本系統可操作在獨立供電模式或市電併聯模式，其中獨立供電模式採用電壓回授控制機制穩定輸出電壓；而市電併聯模式則利用零交越點控制法及電流修正控制法，使變流器輸出電流與市電電壓同頻率且同相位，並將電能有效的饋入電網。此外，本系統也具有過電壓/欠電壓之保護，防止系統於不當操作情況下損毀。最後，本文以數位信號處理器TMS320LF2407A為核心來實現系統之數位控制，並實際製作額定輸出600W之變流器系統來驗證。

The purpose of this thesis is to implement the grid-connected inverter system to feed electrical power into the utility grid effectively by using current correction control. It work on stand-alone mode or grid connected mode. The inverter output voltage can be stable when operates in stand-alone mode with voltage feedback control. When the system operates in the grid-connected mode with zero-crossing control & current correction control, the phase and frequency of the inverter output currents is similar to the utility system. Besides, this inverter with over-voltage or under-voltage protection can avoid system causing damage under improper operation. This system based on DSP TMS320LF2407A to fulfill digital control. And the prototype of inverter system is confirmed to be feasible.

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