照明電源轉換裝置VOLTAGE CONVERTING DEVICE

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

14/861,967

專利證號

US 9,445,468 B1

專利獲證名稱

照明電源轉換裝置VOLTAGE CONVERTING DEVICE

專利所屬機關 (申請機關)

義守大學

獲證日期

2016/09/13

技術說明

LED燈具有環保、節能與壽命長的特點，可取代傳統的高壓水銀燈與高壓鈉燈，成為新一代路燈的光源。市售的LED路燈照明驅動電路為兩級式架構，由前級具功因修正功能的升壓型轉換器與後級半橋式LLC諧振轉換器，或是由前級具功因修正功能的交錯式升壓型轉換器與後級半橋式LLC諧振轉換器組成。兩種傳統LED路燈驅動電路的缺點為電路元件數目與成本較多，且因為輸入能量經過兩級功率轉換導致效率不高。 因此，本專利提出新型單級單開關高功因LED路燈驅動電路，由降昇壓轉換器整合返馳式轉換器成為單一級的電路架構，具有降低元件數目、降低電路成本與提高轉換效率等特點。 Light-emitting-diode (LED) has features of environmental protections, energy-savings and long lifetime, and it is suitable for street-lighting applications and going to replace the traditional lighting sources such as high-pressure mercury lamps and high-pressure sodium lamps. The conventional two-stage LED street-lighting drivers are consisted of a boost power-factor-correction (PFC) converter and a half-bridge LLC resonant converter, or an interleaved PFC converter and a half-bridge LLC resonant converter. The disadvantages of these conventional drivers are more components and high cost, and lower efficiency is limited due to two-stage power conversion. Therefore, this patent presents a novel single-switch high-power-factor LED street-lighting driver, which integrates a buck-boost converter with a flyback converter into a single-stage topology for obtaining high efficiency and reducing the components and costs.

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