具能量回送與可調功因之數位化新型單相全橋式轉換器

A New Single-Phase Full-Bridge Converter of Digitization with Regeneration and Adjustable Power Factor

侯啟威(Chi-Wei Hou)

指導教授 ： 陳政裕

共同指導教授 ： 陳宗成

國立虎尾科技大學/電機資訊學院/電機工程研究所/碩士(2009年)

摘要

本論文提出具能量回送與可調功因之單相全橋式轉換器，該轉換器是利用廣義零向量技巧與死帶控制，將一個單相升壓交流整流器與一直流降壓轉換器整合成一單級交直流轉換器，並具有能量回送與功因修正之功能。在控制機制上，利用偵測輸出電壓與市電電流來做控制，同時能消除電流諧波及改善功率因數。另外，本論文中建立此轉換器之直流及小訊號模型，並求出其系統轉移函數。最後，以VisSim模擬與實際量測實驗結果，來驗證本論文之正確性與實用性。

關鍵字

能量回送 ； 可調功因 ； 廣義零向量技巧 ； 死帶控制

並列摘要

This thesis proposes a single-phase full-bridge converter with energy regeneration and adjustable power factor. Based on a generalized zero vector technique and dead-band control the converter combines a single-phase boost rectifier and a buck converter to form a novel single-stage converter of AC to DC. The converter has not only energy regeneration but also power factor improvement advantages. To reduce harmonic current and improve power factor of AC utility, the proposed system uses a kind of current mode feedback control which detects output voltage and AC utility current. Furthermore, both DC and small signal model for the proposed converter are established to obtain transfer function of the system. Finally, experimental and simulated results with VisSim are presented to demonstrate the effectiveness of the proposed converter.

並列關鍵字

Energy regeneration ； Adjustable power factor ； Generalized zero vector ； Dead-band control

參考文獻

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