本論文旨在研發五階層換流器，再引用實驗室畢業學長所研究的多階層架構，實現 DC-AC 能量轉換。主要架構包含6個功率開關實現五階層交流之輸出，架構為利用2個功率開關之輔助電路與傳統全橋電路所組成換流器以達到輸出，再藉由TMS320F28035 數位訊號處理器 (DSP) 控制功率開關來實現。本文中會說明此電路動作之原理、控制之流程及所提理論進行驗證。
最後研製一200 V之直流電壓輸入、110 V之交流電壓輸出多階換流器，輸出功率為1.5 kW ，其滿載效率為93.1%，負載在759.5 W時有最大效率96.35%。此五階層換流器經由模擬與實驗之結果證明架構之可行性。

In this thesis, a citing the multi-level architecture developed by the graduated seniors of the laboratory, a five-level inverter are implementation. The power stage includes 6 power switches to achieve the output voltage of AC. The structure uses an auxiliary circuit consisted of 2 power switches and a conventional H-bridge circuit to achieve the output, and then is controlled by the TMS320F28035 digital signal processor (DSP). The principle of this circuit operation and the flow of control with discussed in this thesis.
Finally, a multilevel inverter with DC input voltage 200 V and output voltage 110 Vrms. The output power is 1.5 kW. Full load efficiency is 93.1%, the maximum efficiency in 759.5 W load is 96.35%. The feasibility of the five-level inverter are proved by the simulation and experiment results.

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