單級高功因D類串並聯共振式螢光燈電子安定器

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

095131888

專利證號

I 326565

專利獲證名稱

單級高功因D類串並聯共振式螢光燈電子安定器

專利所屬機關 (申請機關)

崑山科技大學

獲證日期

2010/06/21

技術說明

本專利將D類串並聯共振式螢光燈電子安定器與降升壓式功因改善電路整合成單一級，並共用主動切換開關，以減少控制電路與開關元件數。其係利用一個鐵心和兩組繞線作為電感Lpf1與Lpf2來當兩組降升壓式轉換器儲能電感，故可以大幅地縮減電感器的體積與重量分別負責輸入電源的正半週與負半週，另外，本發明電路的功率開關元件S1及S2為雙向導通開關，可以使用金氧半場效電晶體，其基底-汲極間的二極體可用來作為D1和D2，毋需額外並聯二極體，使得本發明電路在成本上更具有具有電路構造簡單、控制容易、高效率與低成本等競爭力。 In order to meet the requirements of modern electronic devices, such as small size, light weight, high power factor, low current harmonics, high efficiency and low cost, a single-stage high-power-factor electronic ballast for fluorescent lamps is proposed in this pattern. The electronic ballast will benefit from simpler configuration, fewer components, low current stress and therefore high efficiency and low cost. The proposed ballast circuit is composed of the integration of two buck-boost power-factor-correction converters and a class-D voltage-source series-parallel resonant inverter. Only one power processing stage is commonly used by both power stages to save the cost of active switches and also control circuits. The active power switches are controlled by pulse-width-modulation at a fixed switching frequency with a constant duty ratio. The electronic ballast can achieve nearly unity power factor by operating the buck-boost converter at discontinuous current mode.

備註

本部已於103年3月17日科部產字第1030011448號函同意崑山終止該專利

連絡單位 (專責單位/部門名稱)

研究發展處

連絡電話

06-2059715

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