本文研製一部具有功因校正的交/直流轉換器，採用連續電流控制模式的平均電流法，分別以DSP和FPGA實現功因校正的控制。文中研製300W，100kHz切換頻率的交流110V/直流400V轉換器。並以實驗結果說明DSP控制具有較佳的暫態響應；然而FPGA控制具有較佳的功因及較低的諧波電流。
文中並建立小信號數學模型，再以電腦模擬繪出波德圖，由相關的波德圖決定頻寬及相位餘裕度，以供設計比例積分控制器的依據，最後以模擬結果作為實際設計控制器的參考。

This thesis studies a power factor corrector for an ac/dc converter. The averaging current technique of continuous current control mode is used to implement the power factor correction circuit. The controller is realized by using a DSP and a FPGA to achieve the power factor correction. A 300W, 100kHz, AC 110V/DC 400V converter has been implemented. Experimental results show the different characteristics between DSP control and FPGA control. The results show that the DSP control has better transient responses；however, the FPGA control provides better power factor and low harmonic currents.

This thesis establishes small signal model and uses computer simulation results to draw Bode diagram. Proportional-integral controller is designed according to the bandwidth and phase margin of the Bode diagram. Finally, the simulation results are used as a reference for the design of the controller.

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