本論文引用實驗室畢業學長所研發的多階層逆變器架構，在不增加或減少元件的情況下，實現AC-DC能量轉換，藉由TI公司所生產的TMS320F28035數位訊號處理器(DSP)控制開關，實現雙向多階層逆變器。本論文在控制中加入平均電流法控制進而實現功率因數修正(PFC)，利用改變PWM的工作週期使輸入電流追隨輸入電壓，此控制使輸入電壓電流同相位。
最後模擬並研製一交流輸入電壓220 Vrms，直流輸出電壓400 V之雙向多階逆變器，輸出功率為2kW，其滿載效率為92.72%，負載在1.6 kW時有最大效率93.53%，最大功率因數為0.98，最後驗證本文提出之AC-DC電能轉換的可行性。

This thesis references the multilevel inverter topology developed by the graduates of the laboratory to achieve AC-DC energy conversion without increasing or decreasing components. Using TMS320F28035 digital signal processor(DSP), which is produced by TI, to control switch and realizes bidirectional multilevel inverter. In this thesis, the average current method is added to realize power factor correction (PFC). Changing the duty cycle of the pulse width modulation (PWM) to make the input current follow the input voltage. This control makes the phase of input voltage and current equality.
A bidirectional multilevel inverter with AC input voltage of 220 Vrms and DC output voltage of 400 V is simulated and developed. The output power is 2 kW. Full load efficiency is 92.72%, the maximum efficiency in 1.6 kW load is 93.53%. The maximum power factor is 0.98. Finally, the AC-DC power conversion proposed in this thesis is verified.

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