本研究研發一個應用在機車怠速熄火系統之解耦合自我調校比例-積分控制器，藉以處理啟動模式下之參數變異及外部干擾的問題。同時，也提出一種直接調降電壓的新穎方法，解決在發電模式下所產生的電能電位過高的問題。
本研究建立一體式啟動發電機啟動模式之動態模式、設計解耦合自我調校比例-積分控制器。利用簡單的空間向量方法，建立了所採用的永磁同步馬達本體之電機方程式及狀態方程式，提供控制器設計的模型依據。研究結果顯示，一體式啟動發電機在啟動模式下有快速平滑的暫態電流響應，同時可在0.15秒進入穩態響應，而對於參數變異性及外部干擾也具有良好的強健性，經150 cm3的實車驗證也具有甚佳的啟動效果。
而在一體式啟動發電機發電模式下，透過軟體建立虛擬霍爾感測訊號，調變相位移動電壓，使得在發電時所產生的高電位交流電壓直接轉換到低電位直流電壓，解決安全充電的問題。本研究驗證虛擬霍爾感測訊號可取代實體霍爾感測訊號，觸發功率元件MOSFET的閘極開關，針對不同轉速下的反電動勢電壓所產生不同的相位角移動，可在全轉速域電壓即時調變相位移動電壓。

This thesis proposes a decoupled self-tuning proportional-integral controller applied to scooter idle stop system to deal with the parametric variation and external disturbances in the driving mode. At the same time, a novel method of directly adjusting voltage is proposed to solve the problem of excessive power potentially generated in the generation mode in order that the generated power can be charged to the scooter battery safely.
The dynamic mathematical model of permanent magnet synchronous motor (PMSM) in Integrated Starter Generator (ISG) is built using a simple space vector method. Then the PMSM equations are transferred into the steady state equations for the reference of the decoupling self-tuning proportional-integral controller design. The results of this study shows that the ISG has a fast and smooth transient current response in the driving mode and reaches the steady state at 0.15 second. Moreover, this controller has a good robustness under parametric variation and external disturbances condition. Experimental results in a 150 cm3 scooter demonatrated the same performances using the proposed controller.
In the generation mode of ISG, the virtual Hall signals are employed to trigger the gate switches of the Metal Oxide Semiconductor Field Effect Transistor module and thus to shift the phase voltages. As a result, the generated high ac power can be transferred into the low dc voltage to charge the scooter battery safely. The results of experiments shows that the phase voltages can be shifted real-time by the virtual Hall signals and the feasibility of phase voltage modulation under full speed range has been verified.

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