本論文以升壓型電路為功率級架構,並利用數位信號處理器為控制平台,以實現高功率因數之電能轉換器,改善傳統AC/DC轉換器使用橋式整流器,所造成電流失真大、功率因數不佳、電路元件龐大、控制迴路補償不易調整等問題。本論文以包含內外迴路之多迴路感測方式實現平均電流控制法,達到輸入電流波形能夠追隨電流命令以及輸出電壓能夠穩壓調節之需求。 本論文以dsPIC30F4011微處理器來實現所設計之控制器與平均電流控制法,其中輸入交流電壓為85Vac~135Vac,輸出電壓為400V,最大輸出功率為300W。經由實測結果,所研製之數位功率因數修正器具有高功率因數、高效率、低諧波失真等優點。
The purpose of the thesis is to design and implement a boost power factor corrector based on the digital-signal-processor (DSP) to achieve high power factor, low current distortion and output voltage regulation. In this thesis, the controller consists of a multi-loop scheme including the inner current loop and the outer voltage loop for power factor correction and output voltage regulation to improve the power factor and control the DC-link voltage. The associated controls are implemented with a dsPIC30F4011 DSP. The specifications are as follows: input voltage is from 85Vac to 135Vac, output voltage is 400V and maximum output power is 300W. The experimental results show that the implemented system is with the following advantages: high power factor, high efficiency and low THD.