本論文主要研製一具高功因之馬達驅動系統。在高功因部分以SEPIC轉換器為功因校正整流器的核心架構,利用主動式功因校正技術的平均電流控制法推導出系統轉移函數,設計內迴路電流控制器與外迴路電壓控制器,使其在輸入電壓振幅變動及負載變動下,都能具有良好的輸出穩壓特性,並且提高功率因數,減少輸入電流諧波,以符合國際電流諧波規範,提升電源容量的利用率。 在馬達驅動部分以三相12/8極切換式磁阻馬達配合三相功率級驅動電路與IP架構的電流與速度控制設計,並且結合數位信號處理器dsPIC30F4011建構一全數位變速控制。利用轉子凸極位置檢測的方式估測馬達速度,使馬達在系統參數變動及負載干擾情況下,得到較佳的暫態響應及負載干擾之消除。
This thesis mainly studies the Switch Reluctance Motor (SRM) Driver System with SEPIC Power-Factor-Correction (PFC) Rectifiers. An active PFC rectifier based on a SEPIC converter with average current-mode control (ACC) technique is investigated in the thesis. It’s controlled by two feedback loops, a fast inner current loop and a slow outer voltage loop. When the system reaches well output voltage regulation under input voltage variation and loading change, it would comply with the international current standards on power factor and input current distortion of power supplies. Regarding the part of SRM Driver System, it is designed for the drive by using 3-phase 12/8 pole SRM with a full digital speed control based on DSP single chip dsPIC30F4011. The speed of motor estimation utilizes the rotor salient pole position of SRM to sense pulse signal. In addition, with the design of single-supply-driven circuit to save cost, the design of speed controller to reduce the effects of motor and parameter variations, the system provides a good performance even under load torque disturbance.