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題 名 | 具高功率因數之單級調光電子安定器=Single-Stage Deimmable Electronic Ballest with Unity Power Factor |
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作 者 | 張英彬; 余德鴻; 吳財福; | 書刊名 | 技術學刊 |
卷 期 | 13:2 1998.06[民87.06] |
頁 次 | 頁327-334 |
分類號 | 448.42 |
關鍵詞 | 電子安定器; 單級轉換器; 電漿模型; 串聯諧振並聯負載換流器; Electronic ballast; Single-stage converter; Plasma model; Seriesresonant parallel-loaded inverter; |
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。利用共用同步開關將升壓 型 (Boost) 轉換器與半橋式串聯諧振並聯負載換流器合併為一單級轉換器.可降低成本、 減小體積且可提高系統可靠度。本文是採用此種單級轉換器做為安定器的電力架構.並把切 換頻率操作於共振頻率以上,以達成零電壓切換目的。前級之升壓型轉換器操作於不連續模 式下, 可獲得高功率因數,同時以脈波寞度調變 (PWM) 與變頻方法進行調光控制,並可兼 作調節功因級之輸出電壓。在分析電子安定器之性能時,以電漿模型取代日光燈,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,再經電腦模擬及硬體量測驗證所提 架構之可行性。 |
英文摘要 | A single-stage electronic ballast with dimming feature and unity power factor is presented in this paper. With the introduction of synchronous switches, the proposed single-stage converter is formed by combining theboost converter and the half-bridge series-resonant parallel-loaded inverter.The proposed circuit is capable of increasing the system reliability while reducing both its size and weight. The power stage is operated above itsresonant frequency to achieve zero voltage switching. In order to btain a high power factor, the pre-regulator, a boost converter, is operated indiscontinuous conduction mode (DCM). The dimming feature is carried outby using pulse-width modulation (PWM) and variable-frequency controlsimultaneously. In addition, the output voltage of the power factor correctionstage can be regulated. The analysis and design of an electronic ballast forfluorescent lamps operated at high frequency is presented. The plasmamodel is used to replace the lamp in the analysis; thus, a negative dynamicresistant characteristic of the lamp can be presented explicitly. Finally, theeffectiveness of the proposed topology is demonstrated by software simulation and hardware measurement. |
本系統中英文摘要資訊取自各篇刊載內容。