本論文以頻率控制及效能追蹤整合應用於交流驅動之LED照明系統設計。此照明系統係由全橋式相位移換流器搭配壓電陶瓷變壓器與串聯諧振電感組合形成諧振電路，可使壓電變壓器具有廣域頻率操作範圍，並因而適用於具有LED陣列之照明架構。而在效能追蹤控制方面，本論文提出新型控制策略，其僅需藉由回授串聯諧振電感之二次側電流訊號，即可經由可規劃邏輯閘陣列控制器執行數位運算及判斷，進而驅使系統操作頻率邁向壓電變壓器能量轉換之最佳效率操作點。本論文所提控制方法與諧振架構，均經由電路推導分析，並已由實驗室雛形驗證，確有助於提升整體照明系統效能，亦具相關照明研究之施行參考價值。

This thesis integrates the frequency control with performance tracking for an AC drive design of LED lighting system. This system is composed of a full-bridge phase-shifter and a resonance circuit formed by a piezoelectric ceramic transformer and series inductor, offering a broader operation range of frequencies for LED array lighting system operations. In the perspective of performance tracking, the thesis further proposes a novel control strategy, by which it only needs the secondary current signals of feedback series resonant inductor. Then, the field programmable gate array is responsible for the computation and judgment such that system operating frequency can be steered towards an optimal point of piezoelectric transformer energy conversion. This proposed system has been analyzed through a laboratory prototype. Experimental results confirm the application values of the method for lighting system performance improvement.

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