本文提出一新型具耦合電感器及切換式電容器之十一階換流器，此電路架構包含一直流電源、切換式電容器及耦合電感器，利用切換式電容器串接技術及耦合電感器使輸出產生十一種輸出電壓階層，並具有低總諧波失真率之多階輸出。相較於傳統十一階換流器架構，本文提出之架構採用較少功率開關及二極體元件，電容數量也較傳統十一階換流器少，以增加電路穩定性，並提高電路壽命，且不需電容平衡電路，開關訊號控制上變得較為簡易。
本文設計一輸入270 V直流電壓、輸出380 V交流電壓及輸出功率3 kW之實作電路並驗證其可行性。當輸出功率於滿載3 kW，其電路轉換效率為94.03%，輸出電壓總諧波失真率為2.53%。

A novel eleven-level inverter with coupling inductor is proposed in this thesis. The circuit structure includes a direct current voltage source, a circuit composed of switching capacitors and a coupling inductor. Eleven levels of voltage are generated by combining the technique of cascading switching capacitor with coupling inductor. The total harmonic distortion produced by the proposed topology is also relatively low compared with traditional topologies. The new topology produces a significant reduction in the number of diodes and power switching devices in order to implement the multilevel output. Voltage-balancing circuit is left out due to the special designation of the switching capacitor circuit, so the control signals on the switches can be simplified.
A prototype circuit with input voltage 270 Vdc, output voltage 380 Vac and output power 3 kW is implemented to verify the feasibility of the proposed novel eleven-level inverter. Finally, the efficiency is 94.03% and total output voltage harmonic distortion is 2.53% at 3 kW.

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