回收汽车制动能量的发电装置.doc

回收汽车制动能量的发电装置 毕业设计 回收汽车制动能量的发电装置 摘要 通过对国内外制动能量回收利用装置的研究,结合未来电动汽车驱动方式的发展方向,本文研究利用轮毂式发电机回收制动能量的实用技术。根据电机的可逆原理当原动机驱动电枢绕组在主磁极N、S之间旋转时,电枢绕组上感生出电动势,经电刷、换向器装置整流为直流后,引向外部负载(或电网),对外供电,此时电机作直流发电机运行 首先,选择永磁无刷直流电机。与其他电机相比,永磁无刷电机具有功率密度高、效率高、体积小、结构简单、输出转矩大、可控性好、可靠性高、噪声低等一系列优点,在电动车领域颇受青睐。本文将进行永磁无刷直流电机的结构设计及优化。 然后,进行结构设计并根据结构参数绘制CAD图纸,并应用UG软件进行三维建模。对发电机的端盖、定子、转子进行结构设计并查阅资料,确定各主要参数。 最后,将CAD图纸面域导入ANSYS,利用ANSYS对电机二维电磁仿真模型进行电机内部永磁磁场进行仿真计算。通过对仿真结果的分析,检验该转子电机磁路的合理性,并对电机进行优化设计以提高电机性能的改进措施;通过对某相电枢磁场磁路的研究分析,表明采用该转子结构的电机利用电枢磁场进行弱磁的效果可以得到较好改善。 关键词:电动汽车,轮毂电机,回收制动能量,仿真计算 ABSTRACTThought the research of the braking energy recovery device at home and abroad, combined with the future direction of the development of electric vehicle driving technology, this paper will develop a wheel type generator to recover brake energy Firstly, the permanent brushless DC motor was choseCompared with other motor, the permanent magnet brushless DC motor has high power density, high efficiency, small volume, simple structure, large output torque, good controllability, high reliability, low noise and a series of advantages, so in the field of electric vehicles it is used widely. In this paper, the permanent magnet brushless DC motor structure will be design and optimized Then, design the structural of generator and according to the structure parameters to draw CAD drawings, and use UG software to create three-dimensional modeling. Design the structure of stator, rotor end cap and determine the main parameters Finally, import the CAD drawing plane domain into ANSYS and use ANSYS to simulation the model of motor interior permanent magnet magnetic field. Through the analysis of the simulation results, test if the rotor motor magnetic circuit is reasonable, and conduct the optimization design in order to improve motor performance. Keywords: electric vehicle, wheel-hub motor, recovery of braking energy, fractional slot, TMS320LF2407A, Simulati