高功率具主動均流之數位控制雙向DC-DC轉換系統研製｜國立臺灣科技大學博碩士論文系統

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研究生：	江翊先 Yi-Hsien Chiang
論文名稱：	高功率具主動均流之數位控制雙向DC-DC轉換系統研製 A Digital Controlled High-power Bi-directional DC-DC Conversion System with Active Current Sharing
指導教授：	邱煌仁 Huang-Jen Chiu 林景源 Jing-Yuan Lin
口試委員:	謝耀慶 Hsieh, Yao-Ching 黃仁宏 Peter J. Huang
學位類別：	碩士 Master
系所名稱：	電資學院 - 電子工程系 Department of Electronic and Computer Engineering
論文出版年：	2018
畢業學年度：	106
語文別：	中文
論文頁數：	99
中文關鍵詞：	雙向、直流微電網、碳化矽模組、控制器區域網路、主動式均流控制
外文關鍵詞：	Bi-directional, DC micro-grid,, SiC module, CAN, Active output current -sharing
相關次數：	點閱：235 下載：15
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本文旨在研製「高功率具主動均流之數位控制雙向DC-DC轉換系統」，囊括硬體、軟體、週邊保護機制與參數設計等完整系統規劃，功率開關元件皆採用CREE所製造之碳化矽模組(SiC module)，相較於IGBT能大幅提升效率。硬體方面，功率電路三相串聯諧振式隔離型轉換器與交錯式降/升壓雙向轉換器串聯而成，功率開關元件採用CREE所製造之碳化矽半橋模組，實現提升功率密度、效率以及模組化之目標；韌體方面，以TI®生產之TMS320F28035數位信號處理器(DSP)作為數位控制器，並以CAN通訊協定達成主動式均流控制，實現各模組間輸出電流平衡；參數設計方面，探討電路之頻率響應、Z-轉換之雙線性轉換法及預畸變誤差修正等原理，並且設計對應本系統之數位控制器，再輔以週邊保護機制及系統機構等設計，最終實現連接於電網端750 V、電池端400 V之間，具備充/放電模式，功率達20 kW之雙向DC-DC轉換系統。經模擬與實驗結果驗證，當系統操作於充電模式、輸出功率為20 kW時，最高效率可達95%。本系統可廣泛應用於直流微電網及高速車用充電器等雙向充放電應用。

The aim of this thesis is to study and implement an isolated digital-controlled high-power bi-directional DC-DC conversion system, including hardware implementation, firmware design, circuit protection design and digital controller parameter design. The system is connected between DC micro-grid and Li-ion battery, and composed of several isolated bi-directional converter modules connecting in parallel. Hardware wise, the converter modules consist of isolated three-phase series resonant converters and interleaved buck/boost converter, due to specific control strategies, the output ripple can be significantly reduced. The CREE® SiC half-bridge module are introduced as power switches, which can significantly increase the efficiency and decrease the difficulty of system modularization. Firmware wise, TI® TMS320F28035 digital signal processor is introduced as a digital controller. Control Area Network (CAN) is introduced to implement an active output current -sharing technique. Parameter design wise, frequency-response analysis of the power converter, Z-transform and prewarping technique are studied. From the simulation and the experiment result, an 20 kW DC-DC conversion system with two modules are implemented, connected between Grid side 750 V and Battery side 400 V. When the load comes to 20 kW, the efficiency of the system can reach 95%, and the output current are balanced.

摘 要 ................................................................................................................................... i
Abstract..................................................................................................................................ii
誌 謝 .................................................................................................................................iii
目 錄 .................................................................................................................................. v
圖索引 ................................................................................................................................vii
表索引 ................................................................................................................................. xi
第一章 緒論 ........................................................................................................................ 1
1.1 研究動機與目的 ..................................................................................................... 1
1.2 章節大綱 ................................................................................................................. 3
第二章 微電網系統簡介 .................................................................................................... 4
2.1 隔離型雙向DC-DC轉換模組架構介紹.............................................................. 5
2.2 三相串聯諧振式隔離型轉換器介紹..................................................................... 8
2.3 交錯式降/升壓型轉換器介紹.............................................................................. 15
第三章 數位控制器原理 .................................................................................................. 22
3.1 Z-轉換與方式探討................................................................................................ 22
3.2 數位控制器種類介紹 ........................................................................................... 30
3.3 控制器設計考量與步驟 ....................................................................................... 35
第四章 均流方法與原理 .................................................................................................. 36
4.1 主動均流法之控制架構介紹 ............................................................................... 38
4.2 均流誤差訊號之產生與型式............................................................................... 40
4.3 主動式均流控制驗證 ........................................................................................... 43
第五章 數位系統設計 ...................................................................................................... 45
5.1 數位信號處理器簡介 ........................................................................................... 45
vi
5.2 數位控制器設計 ................................................................................................... 50
5.3 程式與流程規劃 ................................................................................................... 62
第六章 模擬與實驗結果 .................................................................................................. 70
6.1 模擬結果 ............................................................................................................... 71
6.2 實驗結果 ............................................................................................................... 75
6.3 實驗數據 ............................................................................................................... 79
第七章 結論與未來展望 .................................................................................................. 81
7.1 結論 ....................................................................................................................... 81
7.2 未來展望 ............................................................................................................... 82
參考文獻 ............................................................................................................................ 83
                                

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