2017-08-012024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/656388摘要：本計劃將利用三年時間開發出新一代的極高速超音速無刷馬達、驅動器、相關的控制與感測技術，此馬達的轉子運轉切線速度預計突破現有無刷馬達的速度上限，達到旋轉機械的極限(聲音速度343-m/s)，藉由轉子音速運轉，超音速馬達將擁有極高的功率密度，非常適合安裝在有體積與重量限制的移動式動力傳輸系統。 三個創新的研究將會進行來達成超音速馬達的運轉性能，從馬達系統層面，一個新型無定子槽式磁通切換永磁馬達預計被設計來符合音速運轉功率需求，藉由改變轉子磁鐵至無槽式定子背鐵，馬達轉子的機械剛性可以大幅提升，此外本研究將導入新一代的SMC(Soft Magnetic Composite)磁性材料來進行凸極轉子設計，當極高速運轉時，控制器可藉由弱磁控制來增加馬達功率。從驅動器層面，一個可調變的直流電壓轉換器加上單一電流感測三相電流技術會被進行，企圖使驅動器的體積最小化，且有足夠電壓驅動馬達在音速額定運轉。從控制層面，一個轉子共振抑制的演算法會被開發，藉由估測器力矩諧波消除技術，讓馬達的運轉速度上限能夠超越轉子共振頻率的限制。最後，一個非接觸式的軸承也預期被設計來匹配超音速馬達系統，達成全負載額定運轉性能。 <br> Abstract: This three-year project proposes a novel ultra-high-speed sonic brushless machine drive system. The goal is to develop new concepts of electric machine, inverter and controller where the drive operating speed can overcome the current speed barrier, reaching the rotatory machine limitation at 343-m/s sonic speed. The proposed sonic machine drive results in a very high power density which is suited for emerging applications in the transportation with the size and weight constraint. Three systematic design methods are proposed to achieve the sonic speed operation of machine drive. From the perspective of machine design, a flux switched permanent magnet machine with the slotless stator is proposed. By moving permanent magnets from the rotor to the slotless stator backiron, the rotor mechanical stiffness can be greatly improved. In addition, a new SMC (soft magnetic composite) material is used to construct a solid rotor for high speed operation. By designing the rotor saliency in a machine, the flux-weakening control can be implemented to improve high speed performance under the limitation of DC bus usage. From the perspective of drive, only a single current sensor is used for three-phase current reconstruction in order to minimize the size of sonic machine drive. In addition, a variable DC bus modulation is proposed to maximize the voltage usage at high speed. From the perspective of control, a rotor vibration suppression control strategy is developed to reduce the influence of resonant reflected torque ripples on the machine control. Based on the vibration suppression, the rotor operating frequency can overcome the speed barrier limited by the rotor resonant frequency. This project also plans to develop a contactless bearing in order to match the ultra-high-speed loaded operation of sonic machine drive.高速無刷馬達高速馬達驅動向量控制變頻器High speed machine driveshigh speed permanent magnet machinesvector control and variable frequency drives