Design, implementation and verification of 60kW Hub motor driver for electric vehicles 柯紘鈞、蔡耀文
E-mail: [email protected]
ABSTRACT
Due to significant changing in climate and national environmental measures, the efficiency improvement and CO2 reduction become a very important task for the vehicle industry. Taiwan’s vehicle industry spares no effort to the development of electric cars. Light electric vehicle drive design capabilities and manufacturing has been a small-scale development. It should be pointed out that although the low power BLDC motor driver research and design are already complete, compared the high efficiency type over ten thousand Watts BLDC motor driver research were still few. As everyone knows, the high power motor driver is more
complicated for the low power driver of motor system. The difficulties and complications to develop a high power motor driver include the protection circuits design of high power switches, complex manufacture process, high specification test equipment and the strict safety requirements of electric vehicles. Having this in mind, common rules about a high power motor driver are introduced in the thesis. A novel rated 22kW and peaked 60kW hub motor driver is developed. High switching speed gate driver with push-pull output stage is also introduced to modify the switching speed of the high power IGBTs and reduce the switching losses. A snubber is used to provide a low voltage across the IGBTs while the current turns off. In the electric control system, using high performance Texas Instruments TMS320LF2407 digital signal process (DSP) connects various controllers. Moreover, the experimental platform of the high power hub motor driver is already established . The efficiency is close to 99%. By forced air cooling, the average temperature of the driver heatsink is under 35℃ with very lower power losses. By way of the experimental test, the verification of the high performance driver is completed.
Keywords : Hub motors、Gate driver、Permanent magnet DC brushless、Motor control Table of Contents
封面內頁...i 簽名頁...ii 授權
書...iii 中文摘要...iv 英文摘要 ...vi 誌 謝...viii 目錄...xi 圖目錄...xii 表目
錄...xvii 符號列表...xix 第一章 緒論...1 1.1 研究動機與背 景...1 1.2 研究方法...3 1.3 內容大綱...4 第二章 馬達驅動器實 務...6 2.1 驅動器簡介...6 2.2 驅動類型...9 2.2.1 H橋直流馬達驅動 器...9 2.2.2 三相全橋驅動器...11 2.2.3 步進馬達驅動器...12 2.2.4 整流調變型驅動 器...14 2.2.5 交流轉直流調變器...15 2.3 切換元件...17 2.3.1 SCR 矽控整流 器...17 2.3.2 GTO 可關斷閘流管...18 2.3.3 GTR 巨型化電晶體...20 2.3.4 POWER MOSFET 功率型金屬薄膜場效應電晶體...21 2.3.5 IGBT 絕緣閘極電晶體...21 2.4 切換方式...23 2.4.1 解耦電容型...26 2.4.2 經由電阻放電的解耦電容型...28 2.4.3 RCD 充放電電路...31 2.4.4 RCD 箝位型...34 2.5 閘極驅動器...36 2.5.1 切換元件驅動電源...36 2.5.2 閘 極驅動器...41 2.6 其他硬體細節...50 第三章 驅動器研製...56 3.1 切換元件選 用...56 3.2 Gate driver 模組...62 3.3 Snubber 模組...70 3.4 硬體規
劃...72 3.5 控制核心...75 第四章 實驗步驟與結果驗證...89 4.1 動力驗證設 備...89 4.2 實驗方法...92 4.3 測試結果紀錄...93 第五章 結論與展 望...102 5.1 實驗結論...102 5.2 實驗檢討...102 5.3 未來展 望...103 參考文獻...104 附錄A...107 附
錄B...108 REFERENCES
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