查詢結果分析
來源資料
頁籤選單縮合
題 名 | 高功率因數之單級電子安定器 |
---|---|
作 者 | 張英彬; | 書刊名 | 南開學報 |
卷 期 | 1 1996.06[民85.06] |
頁 次 | 頁81-93 |
分類號 | 448.42 |
關鍵詞 | 電子安定器; 單級接枝轉換器; 電漿模型; 串聯共振並聯負載; Electronic ballast; Single stage grafed converter; Plasma model; Series resonant parallel-loaded; |
語 文 | 中文(Chinese) |
中文摘要 | 本文介紹一種具有高功率因數之電子安定器。利用接枝方法將Boost轉換器與半橋 式串聯共振並聯負載變流器合併為一單級接枝轉換器,可減輕成本、體積及提高系統可靠度 。本文是採用半橋式單級電力架構,其切換頻率大於共振頻率,以達成零電壓切換目的,前 級之Boost轉換器操作於不連續模式下,可獲得高功率因數。分析電子安定器之燈管負載時, 以電漿模型為日光燈負載使其在高頻操作下具有動態負斜率電阻特性。最後,再經電腦模擬 驗證所提架構之有效性。 |
英文摘要 | A single stage electronic ballast with high power factor is presented in this paper. By graft techniques, the single grafted converter trees are formed by Boost converter and half bridge series resonant paralled-loaded inverter. The proposed circuit can increase the system reliabity and reduce both size and weight. Zero voltage switching can be obtained on the basis of a single power stage which is operating above the resonant freqnency. In order to obtain high power factor, the pre-regulator Boost converter operating in discontinous current mode (DICM) is adopted. Analysis for electronic ballast of fluorescent lamps operated at high freqnencies is given by using equivalent plasma model. The results indicated a negative impedence characteristic of fluorescent lamps. Finally, the effectiveness of the proposed topology is demonstrated by soft-ware simulation. |
本系統中英文摘要資訊取自各篇刊載內容。