本論文提出具均流並聯之數位控制半橋串聯諧振轉換器模組，其變壓器一次側上下橋開關導通時具有零電壓切換的特性以有效減少切換損失。所研究之轉換器並聯技術可用於大電流負載，且須滿足較佳擴充模組彈性需求的伺服器電源系統。藉由均流技術能確保負載電流平均分配，並利用德州儀器所開發的數位信號處理器TMS320F28035來實現數位控制。
最後設計實作出二部650W並聯均流的半橋串聯諧振轉換器，其輸出電壓為12 V，輸出電流為54 A。實驗結果顯示本文所使用的自動主僕均流法使其均流誤差均在5%以內，電壓調整率在3%以內，而在負載變動暫態期間皆能將電流平均分配。

This thesis proposes current sharing parallel digitally-controlled half-bridge series resonant converters. The primary-side switches can be turned-on with zero-voltage switching (ZVS) to reduce the switching losses. The parallel converters system is suitable for server power supplies demanding high output currents and high flexibility. In this study, current-sharing technique is used to ensure that load current can be equally distributed. Digital control and current-sharing technique are realized by using Texas Instruments DSP chip TMS320F28035.
Two 650-W half-bridge series resonant converter prototypes with current-sharing are implemented. The output voltage is 12 V, the output current is 54 A. From experimental results, the current-sharing error can be within ±5% at full load condition and voltage regulation within 3% by the developed automatic master-slave current-sharing control. The experimental waveforms during load transient are shown to verify the performance of the studied current-sharing control.

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