臺灣博碩士論文加值系統

本論文提出一多組輸出三階半橋LLC諧振轉換器。主要架構為三階半橋LLC諧振電路，此電路架構降低開關電壓應力，減少對開關電壓應力的電壓要求，並透過電路特性使開關能以柔性切換進行動作，以減少開關硬性切換造成的能量損失，此外本電路將以非接觸式鬆散耦合變壓器進行無線電能傳輸將能量傳遞至低壓側，利用此特性增加電路安全性、穩定性及便利性在兩線圈盤近距離不接觸，為多組電輔車電池充電。本文以數位訊號處理器TMS320F28335作為前級系統控制核心，以類比訊號處理IC TL494作為後級系統控制核心，以傳輸功率1.2kW進行設計，實現輸入電壓400V與輸出充電電壓40V之多輸出無線電能轉換器。

This paper proposes a multi-output three-level half-bridge LLC resonant converter. The main structure is a three-level half-bridge LLC resonant circuit, which reduces the voltage stress on the switches, thereby lowering the voltage requirements for the switches. The circuit characteristics enable soft switching operation, reducing energy losses caused by hard switching. Additionally, this circuit employs a loosely coupled transformer for wireless power transmission to the low-voltage side, enhancing the safety, stability, and convenience of the circuit in scenarios where the two coil plates are in close proximity but not in contact. This design is intended for charging multiple electric-assisted vehicle batteries. The paper uses the digital signal processor TMS320F28335 as the control core for the primary system and the analog signal processing IC TL494 as the control core for the secondary system. The system is designed for a transmission power of 1.2 kW, achieving a multi-output wireless power converter with an input voltage of 400V and an output charging voltage of 40V.

摘要……………i
Abstract……………ii
誌謝……………iii
目錄……………iv
表目錄……………v
圖目錄……………vi
第一章 緒論……………1
1.1 研究動機與目的……………1
1.2 文獻探討……………2
1.3 論文大綱……………6
第二章 三階半橋LLC諧振降壓式轉換系統介紹……………7
2.1 三階半橋LLC諧振降壓式轉換系統與特性及控制法介紹……………7
2.2 控制法與電路特性分析……………8
2.3 電路動作原理分析……………13
第三章 鬆散耦合變壓器分析與模擬……………23
3.1 鬆散耦合變壓器分析……………23
3.2 鬆散耦合變壓器設計磁場模擬……………26
第四章 電路參數以及周邊電路設計……………29
4.1 轉換器規格……………29
4.2 轉換器參數設計與元件使用……………29
4.3 周邊輔助電路設計……………37
第五章 電路模擬分析……………39
5.1 轉換器控制器架構……………39
5.2 控制器介紹……………40
5.3 電路模擬與分析……………41
第六章 實驗結果分析……………49
6.1 轉換器元件參數與量測儀器……………49
6.2 轉換器實測波型……………50
6.3 轉換器效率量測……………56
6.4 串級轉換器效率分析……………59
第七章 結論與未來展望……………61
7.1 結論……………61
7.2 未來展望……………61
參考文獻……………62

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