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題名 | 單級高功因調光電子安定器 |
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作者 | 張英彬; | 書刊名 | 南開學報 |
卷期 | 2 1997.06[民86.06] |
頁次 | 頁251+253-264 |
分類號 | 448.232 |
關鍵詞 | 電子安定器; 升壓式串/並聯換流器; 電漿模型; Electronic ballast; Boost-series/parallel inverter; Plasma model; |
語文 | 中文(Chinese) |
中文摘要 | 本文介紹一種具有高功率因數之單級調光電子安定器,此安定器之電力級為一升 壓式串 / 並聯換流器。由於結構簡單,可降低成本、減小體積但可提高系統可靠度。 於分 析此安定器時, 是將此電力級分成兩個半級,分別為升壓轉換器及串 / 並聯換流器半級, 這可減化分析並增加物理意義。升壓轉換器半級操作於定導通週期且不連續導通模式下以達 到高輸入功因; 至於串 / 並聯換流器半級乃操作在高於諧振頻率,可達成安定器功能並有 零電壓切換之特色,因此可降低切換損失。在分析電子安定器之性能時,以電漿模式取代日 光燈管,使其在高頻操作下能顯現符合實際燈管之負動態電阻特性。最後,再經硬體量測驗 所提架構之可行性。 |
英文摘要 | Single-switch isolated electronic dimming ballasts with high power fac tor is presented in this paper. The proposed single-switch isolated electronic ballasts is the combination of a boost converter and a series/parallel inverter. The boost semi-stage working in the discontinuous conduction mode (DCM) in order to achieve high power factor and the series/parallel inverter semi-stage is used to drive the lamp. The proposed circuit is capable of increasing the system reliaboility and reducing both is size and weight. The power stage is operated aboue is resonant frequency to achieve zero voltage switching (ZVS). The dimming feature is carried out by using variable-frequency control with a constant on-t ime. The plasma model is used to replace the lamp can present explicitly. Finall y, the effectiveness of the proposed topology is demonstrated by computer simula tion and hardware measurements. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。