新型單切換開關直流/直流負載共振式轉換器

Novel Single-Switch Loaded Resonant Converter for DC/DC Energy Conversion

陳育申(Yu-Shen Chen)

指導教授 ： 王永山

崑山科技大學/工程學院/電機工程研究所/碩士(2011年)

摘要

本論文提出新型單切換開關直流/直流負載共振式轉換器，與傳統需要兩個功率開關的D類共振轉換器相較之下，因此新型單切換開關直流/直流負載共振式轉換器只需要一個開關，同時只需一組觸發信號來驅動功率開關，降低成本，控制電路製作簡單，使新型單切換開關直流/直流負載共振式轉換器的電路效率提高，必須使切換頻率高於功率開關導通時之電路共振頻率，所以只要元件參數選擇適當，就可以使功率開關操作於零電壓切換，因而降低切換損失提高整體電路效率。
最後根據設計的元件規格實作與電腦模擬以及電路量測之結果比較，驗證本論文所提之新型單切換開關直流/直流負載共振式轉換器確實操作於零電壓切換狀態，且具有柔性切換之特性，經由實驗證實，此新型單切換開關直流/直流負載共振式轉換器整體效率高達91.79%，實驗的結果令人相當滿意。

關鍵字

E類共振轉換器 ； 柔切技術

並列摘要

Presented in this paper is the novel single-switch loaded resonant converter for DC/DC Energy conversion. Compared with the traditional class D resonant converter which needs two power switches, this new resonant converter requires only a single switch and only a single set of triggering signals to drive the power switch, along with the control circuit simple to make, and the production costs are naturally reduced. To increase efficiency of this novel single-switch loaded resonant converter for DC/DC energy conversion, however, the switching frequency must be higher than the circuit resonant frequency induced by power switch-on. Therefore, selecting appropriate component parameters will allow the power switch to be operated at zero voltage switching, thereby reducing switching losses to improve overall circuit efficiency.

Finally, the implementation results out of the designed component specifications are compared with the results from computer simulations and circuit measurement, and it is verified that this novel single-switch loaded resonant Converter for DC/DC energy conversion presented in this paper was indeed operated at the zero-voltage status, and had a feature of soft-switching flexibility. As a result, this novel single-switch loaded resonant converter for DC/DC energy conversion is experimentally proved to have an overall efficiency of 91.97%, which is a very satisfactory experimental result.

並列關鍵字

Class E Resonant Converter ； Soft-Switching

參考文獻

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