具CAN Bus通訊之電動機車車載充電系統之研製

本論文主要是針對電動機車提出一智慧型plug-in車載充電系統，一般電動機車之充電器為外接式，使用上較為不方便，故本文提出以充電器之效率提升與體積縮小為設計前提，使充電器容易裝置於車上。另外，一般充電器與電動機車之車載網路之間並無通訊功能，若充電時使用者誤觸油門手把，恐有使用安全的疑慮。因此，為增加車載充電器的效率，本論文提出一主動箝位順向式轉換器技術，以降低開關切換損失，並提高電路效率。再者，本系統控制核心部分以微控制器擷取回授電壓，並透過演算法則調整輸出脈波寬度調整(PWM)訊號以驅動功率級電路，由數位化控制定電流/定電壓(CC/CV)混合模式充電，以避免電池壽命受損。此外，本論文亦規劃設計控制器區域網路匯流排(CAN bus)於系統中，除了行車控制器能藉由CAN bus傳送控制訊號發送給車載充電器外，亦能讓車載裝置間相互溝通。最後，藉由實驗結果驗證本文所提出之系統理論分析的可行性；系統效率達到88.98%以上，的確可有效改善開關切換損失。

關鍵字

電動機車； plug-in車載充電器；順向式轉換器；零電壓切換

並列摘要

This thesis proposes an intelligent plug-in on-board charger for electric scooter. In general, it is inconvenient to use due to the external charger in the electric scooter. Thus the purpose of this thesis is to increase efficiency and reduce the size of circuit that can be easily equipped on the vehicle. Besides, the general chargers have no communication between the charging circuit and the vehicular network in the electric scooter. If the user inadvertently throttle grip during the on-line charging, there is a concern in the driving safety. To increase the efficiency of the on-board charger, this thesis proposes active clamp forward converter to reduce power switching and conducting losses. About the control core of this system, a microcontroller is used to calculate the level of the feedback voltage in the output, and regulate the PWM to drive the power switches by the control algorithm. Besides, this thesis uses a two-stage charging method with constant-current and constant-voltage (CC/CV) to avoid the damage of the battery cycle life. Since the charger is on-board, a Controller Area Network Bus(CAN Bus) communication is designed in this charging system. By the CAN Bus communication, the vehicular controller could transmit signals to the on-board charger, besides, the other devices in the vehicle could communicate in each other. Finally, the experimental results are provided to verify the correctness and feasibility of the proposed scheme which can reduce the switching losses such that the efficiency is more than 88.98%.

並列關鍵字

Electric scooter ； forward converter ； plug-in on-board charger ； zero-voltage-switching(ZVS)

參考文獻

[12] 張煌章, “具同步整流之主動箝位順向式轉換器分析與研製,” 碩士, 電機工程研究所, 崑山科技大學, 台南縣, 2007.

[5] 孫成啟, “CAN BUS 網路之鋼板熱軋溫度監控系統,” 碩士, 機械工程學系, 元智大學, 桃園縣, 2003.

[10] B. R. Lin, S. C. Tsay, and C. S. Yang, “Analysis and implementation of ZVS forward converter with centre-tapped rectifier,” IEE Proceedings-Electric Power Applications, vol. 153, no. 5, 2006, pp. 642-652.

[11] L. Bor-Ren, H. Kevin, and W. David, “Analysis, design, and implementation of an active clamp forward converter with synchronous rectifier,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 53, no. 6, 2006, pp. 1310-1319.

[13] L. Yu-Kang, K. Tsu-Shou, and L. Jing-Yuan, “Analysis and Design of an Interleaved Active-Clamping Forward Converter,” IEEE Transactions on Industrial Electronics, vol. 54, no. 4, 2007, pp. 2323-2332.

國際替代計量

具CAN Bus通訊之電動機車車載充電系統之研製

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