本篇論文主要研製一「寬輸出電壓調節範圍之30 kV高壓直流電源供應器」。功率級架構分為兩級，前級使用邊界電流導通模式之功率因數修正電路，用以提高電路的功率因數並且提供穩定直流輸出380 V電壓供給後級使用。後級為DC/DC轉換器，架構選用降壓式電流饋入型推挽式轉換器，二次側使用倍壓電路，用以提供5 ~ 30 kV高壓輸出、額定功率100 W。電路的輔助電源，架構選用返馳式轉換器，其輸出兩組15 V/0.2 A與一組5 V/2 A電源提供控制級電路使用。論文內容包含高壓電源供應器操作原理與設計考量的探討與分析，最後研製之硬體規格雛形電路由實驗結果得到驗證其可行性。

This thesis mainly develops a 30 kV high-voltage DC power supply with a wide-range of adjustable output voltage. The power stage consists of a power factor corrector (PFC) and a buck current-fed push-pull DC-DC converter. The pre-stage PFC circuit is operated at boundary current conduction mode (BCM) to achieve high input power factor and provide a 380 V regulated DC voltage to the post-stage circuit. The buck current-fed DC-DC converter with a secondary voltage multiplier provides a high-voltage output from 5 kV to 30 kV with a rated power of 100W. A flyback converter is designed as the auxiliary power supply to provide two sets of 15V/0.2A and a 5V/2A for control stage. In this thesis, the operation principles and design considerations for the studied high-voltage power supply are discussed and analyzed. A laboratory prototype circuit is built and tested. The experimental results are shown to verify the feasibility of the proposed scheme.

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