近年來，隨著汽車空氣汙染法規的加嚴及都市熱島效應的惡化，各大車廠都將車輛電動化作為研發重點，以降低車輛溫室氣體的排放。然而純電動車的續航力普遍低落，原因為電池儲存能量不足及現有的電動車馬達無法操作在汽車駕駛情境的最高效率區，如高扭力馬達不適合高轉速；而高速馬達在低速時扭力不足。因此本文利用一顆感應馬達結合一顆永磁同步馬達，設計切換控制策略，並根據車輛駕駛情境，可分為節能模式與運動模式。在節能模式下追求車輛節能效果，將馬達限制在額定區內運作，並根據駕駛者駕駛命令與車輛現時轉速，動態調整雙動力源之間的輸出動力，使動力源在高效率區間內工作，達到車輛動力分配的效果；在運動模式下則是追求車輛性能，依據駕駛者不同的車輛負載需求，提出所對應的操作模式。

Recently, with the emphasis on the execution of automobile air pollution regulations, most automakers have focused on the development of vehicle electrification to reduce carbon emissions. However, at present, the endurance of pure electric vehicles is generally low due to low battery capacity and the inability of the existing electric vehicle motors to keep operating in the highest efficiency zone in different driving scenarios. For example, high-torque motors are not suitable for high speeds, and high-speed motors have insufficient torque at low speeds. Therefore, this thesis proposes a new type of electric-electric drive architecture which selects an induction motor (IM) combined with a permanent magnet synchronous motor (PM), and further develops a novel mode switching strategy. According to different force requirements and vehicle speed, it can be divided into eco mode and sports mode. The Eco mode pursues the energy saving and the Sport mode pursues system acceleration performance. By means of limiting the motor to operate in the rated area, and dynamically adjusting the output power between the power sources according to the driver's driving command and the current speed of the vehicle, so that the power source can keep working in the high efficiency range, and thus the endurance is enhanced.

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