臺灣博碩士論文加值系統

本文旨在研製具可擴充性之三相並聯型不斷電系統。文中採用控制區域網路為通信介面，作為各三相不斷電系統之通信使用。在市電正常時各並聯之不斷電系統，採用電流控制模式作為功率補償使用；於市電中斷時，依據負載所需功率，採用主-僕式並聯之控制法則，其中主不斷電系統為電壓控制模式，其餘為電流控制模式運轉；若電壓控制模式之不斷電系統發生故障時，則電流控制型不斷電系統將立即轉換成電壓控制型之不斷電系統，可持續提供穩定之三相電壓源。如此，每台不斷電系統皆可獨立供電，亦可擴充為多機並聯，以提升容量。
本文之系統以低價位且運算速度快之16位元數位信號處理器為系統之控制核心，且回授電壓及電流，以軟體完成閉迴路控制，減少硬體電路。本系統已完成1030W之線性負載並聯供電測試，其電壓諧波失真率為1.32%，每台不斷電系統皆可平均分擔負載電流，亦可平均分擔負載功率。

This thesis is concerned with the design of three-phase expandable parallel multi-functional uninterruptible power supply (UPS) systems. The system communication is conducted by controller area network (CAN). When the AC mains is normal, the proposed system provides compensating reactive power using current-controlled mode. Whereas, if the AC mains fails, the system will supply the battery power to the load with master/slave control. The master UPS operates under voltage-controlled mode, while all the other converters function under current-controlled mode. If the UPS under voltage-controlled mode fails, one of the UPS under current-controlled mode will be changed to voltage-controlled mode to provide stable AC voltage. Thus, each UPS can either provide AC voltage source independently, or be connected with others in parallel for capacity expansion.
The control scheme of the system is implemented by a 16-bit digital signal processor to reduce the hardware components. The experimental results for 1030 W linear resistive load show that the total harmonic distortion of output voltage is 1.32 %. Each UPS can share current and output power evenly.

中文摘要 I
英文摘要 II
誌 謝 III
目 錄 IV
符號索引 VI
圖表索引 IX
第一章 緒論 1
1.1 動機及目的 1
1.2 系統架構 2
1.3 特色 5
1.4 大綱 6
第二章 三相直流-交流功率轉換器之控制及蓄電池充放電控
制 8
2.1 前言 8
2.2 三相直流交流功率轉換器之模式及控制 8
2.3 電壓空間向量脈波寬度調變控制 12
2.4 三相交流-直流功率轉換器之控制模式 18
2.4.1 三相交流-直流功率轉換器之電壓控制模式 19
2.4.2 三相交流-直流功率轉換器之電流控制模式 25
2.5 結語 27
第三章 通信界面及三相不斷電系統並聯 28
3.1 前言 28
3.2 數位訊號處理器之CAN簡介 28
3.3 CAN之通信協定 30
3.4 CAN資料傳輸方式 32
3.5 三相不斷電系統之並聯策略 38
3.5.1 控制區域網路傳輸資料時間點 40
3.5.2 數位訊號處理器之同步驅動控制策略 40
3.6 結語 42
第四章 實體製作及實測 43
4.1 前言 43
4.2 實體製作 43
4.2.1 數位信號處理器之介面電路 43
4.2.2 電壓回授電路 45
4.2.3 電流回授電路 46
4.2.4 交流電源之電壓同步角位置偵測電路 47
4.2.5 絕緣閘雙極性電晶體 48
4.2.6 控制區域網路通訊介面 49
4.3 軟體規劃 49
4.3.1 主程式流程圖 50
4.3.2 電壓模式功率轉換器之軟體規劃 53
4.3.3 電流模式功率轉換器之軟體規劃 55
4.3.4 蓄電池控制之軟體規劃 56
4.3.5 控制區域網路之軟體規劃 60
4.4 實測驗證 64
4.4.1 實測結果 64
4.5 結語 73
第五章 結論與建議 74
5.1 結論 74
5.2 建議 75
參考文獻 77
附錄A系統規格表 82
作者簡介 83

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