應用於儲能系統之隔離式雙向直流/直流轉換器設計

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姓名

黃得祐(Te-Yu Huang) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

應用於儲能系統之隔離式雙向直流/直流轉換器設計
(Design of Isolated Bidirectional DC/DC Converter for Energy Storage System)

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摘要(中)

由於再生能源不穩定之情況，因此本文設計可調節功率之隔離式雙向直流/直流轉換器，其主要功能為調度微電網系統內部直流匯流排與儲能系統間之能量流動。藉由此轉換器之設計，實現電能可以雙向流通來及時補足微電網系統所需功率，並提高能源的轉換效率。
本文的系統架構主要為相移全橋/推挽式雙向轉換電路，透過脈波相位調變達成相移技術產生零電壓切換，其數位控制採用Renesas公司所生產之型號 RX62T微控制器，可執行類比數位之轉換、開關訊號控制及電路保護機制等功能。當微電網系統功率充餘時，其轉換器將操作於降壓模式，使儲能系統進行充電；反之，其轉換器將操作於昇壓模式，使儲能系統進行放電，補足微電網系統所欠缺功率。
最後，本文使用電路模擬軟體驗證系統架構且實際製作一部具柔性切換之隔離式雙向直流/直流轉換器，並藉由實測結果來證實此架構之可行性。

摘要(英)

Due to the instability of renewable energy, this thesis designs an isolated bidirectional DC/DC converter with adjustable power. It proposes on control the energy flow between DC bus and energy storage system. With this design of converter, the electrical energy can be bidirectionally flow to supplement the power required by the electrical system and improve the energy efficiency.
The electric circuit of this paper is phase-shifted full-bridge/push-pull bidirectional circuit. Pulse phase modulation is used to achieve zero-voltage switching. The digital control uses the RX62T microcontroller which is produced by Renesas, it can perform analog-to-digital convertor, switching signal control and circuit protection mechanisms. When the system power is replenished, the converter will operate in the buck mode to charge the battery of energy storage system; otherwise, the converter will operate in the boost mode to discharge the battery of energy storage system to supply the system.
Finally, this paper uses the circuit simulation software to verify system architecture and produces an isolated bidirectional DC/DC converter with soft switching. It confirms the feasibility of this architecture by the results.

關鍵字(中)

★ 隔離式雙向直流/直流轉換器
★ 相移全橋/推挽式
★ 柔性切換

關鍵字(英)

★ Isolated Bidirectional DC/DC converter
★ Phase Shifted Full-Bridge/Push-Pull
★ Soft-switching

論文目次

論文摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VII
表目錄 X
第一章緒論 1
1-1 研究背景 1
1-2 研究動機與目的 2
1-3 論文大綱 5
第二章相移全橋/推挽式雙向轉換器 6
2-1 切換損失與柔性切換 6
2-2 雙向轉換電路 8
2-3 相移全橋/推挽式雙向轉換電路 12
2-3-1 電路架構 12
2-3-2 降壓模式操作原理 13
2-3-3 昇壓模式操作原理 20
第三章硬體電路設計 24
3-1 硬體規格與架構 24
3-2 主電路 25
3-2-1 功率開關 25
3-2-2 高頻變壓器 29
3-2-3 高壓側電容 32
3-2-4 低壓側電容 33
3-2-5 低壓側電感 34
3-2-6 諧振電感 36
3-2-7 諧振電感鐵芯選擇 38
3-3 週邊電路 41
3-3-1 開關驅動 41
3-3-2 電壓回授 42
3-3-3 電流回授 43
第四章數位控制器設計 45
4-1微控制器介紹 45
4-2 數位控制分析 49
4-3 程式規劃 50
4-3-1 主程式 50
4-3-2 降壓軟啟動 51
4-3-3 降壓模式 52
4-3-4 昇壓軟啟動 54
4-3-5 昇壓模式 55
第五章模擬與實驗結果 56
5-1 電路模擬 56
5-1-1 降壓模式之電路模擬 56
5-1-2 昇壓模式之電路模擬 59
5-2 電路實測 61
5-2-1 降壓模式之電路實測 61
5-2-2 昇壓模式之電路實測 64
5-3 電路整體效率 67
第六章結論與未來發展 68
6-1 結論 68
6-2 未來發展 69
參考文獻 70

參考文獻

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指導教授

陳正一(Cheng-I Chen)

審核日期

2019-8-21

推文