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在电动汽车中,沿车辆底盘和电缆传导的共摸电流是产生电磁传导干扰和共模辐射的重要原因。本文针对电动汽车中主要电磁干扰源的BOOST电源变换器,建立了电磁干扰源和共模电流传导路径的等效电路模型,指出在电缆中传导的共模电流决定于电缆一底盘的阻抗特性。电缆-底盘阻抗的传输线模型分析表明,该阻抗呈容抗、串联谐振、感抗和并联谐振交替出现的特征,使共模电流的各频率分量具有不同的沿电缆分布特性。共模电流的解析结果和试验测量结果基本吻合。为了抑制共摸电流,提出了共模电感的合理布置和取值范围。 相似文献
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The principle of rotor flux-orientation vector control on 100/150 kW three-phase AC induction motor for electric drive tracked vehicles is analyzed, and the mathematic model is deduced. The drive system of induction motor is modeled and simulated by Matlab/Simulink. The characteristics of motor and drive system are analyzed and evaluated by practical bench test. The simulation and bench test results show that the model is valid, and the driving control system has constant torque under rated speed, constant torque above rated speed, widely variable speed range and better dynamic characteris- tics. In order to evaluate the practical applications of high power induction motor driving system in electric drive tracked vehicles, a collaborative simulation based on interface technology of Matlab/Simulink and multi-body dynamic analysis software known as RecurDyn is done, the vehicle performances are predicted in the acceleration time (0 - 32 km/h) and turning characteristic (v = 10 km/h, R = B). 相似文献
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磁悬浮电动机刚性转子径向位置的控制 总被引:4,自引:1,他引:3
以双磁悬浮电动机4自由度刚性转子系统为对象,研究了磁悬浮系统转子径向位置的控制.对于双磁悬浮电动机系统,两端的磁悬浮电动机所产生的电磁力,除了可以作用在本端, 还会影响到另一端,同时,转子的陀螺效应又进一步增加了系统的复杂程度.因此必须对4个径向位置进行控制.首先根据转子的动力学方程,建立起磁悬浮系统的状态空间方程;然后,采用输入向量补偿和基于二次型最优的状态反馈方法, 构造出磁悬浮系统的控制算法,实现4自由度径向位置的控制.通过仿真研究,进一步验证了控制策略的有效性. 相似文献
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Motion analyses are performed with the help of stability and simulation analysis, which can provide theoretical bases for applications of an electric vehicle with two independent drive motors. Compared with one-motor drive electric vehicle, the two-motor drive electric vehicle has the advantage of easy layout, simple power train and good drivability and handling characteristics. Analysis shows the method connecting armatures of two DC motors in parallel can function as mechanical differential without a steering sensor, which can simplify structure and increase reliability of the controller. Computer simulations and experiment are carried out to verify conclusions. 相似文献
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基于电动汽车系统仿真的研究需要,提出两个非线性等效电路电池模型:GNL模型和CR模型。为了评价两个模型的性能,以320单体串联的80 Ah镍氢电池组为研究对象,基于同一组复合脉冲试验数据,应用多元线性回归方法同时辨识Rint模型、Thevenin模型、PNGV模型、GNL模型和CR模型的参数,进而建立各等效电路模型基于MATLAB/Simulink的电流输入仿真模型,使用26.67 A恒流放电和FUDS工况试验数据来验证模型精 度。模型计算结果与试验数据的误差表明,电流输入等效电路模型中,PNGV模型和GNL模型更适用于电动汽车仿真,GNL模型具有更好的精度。 相似文献
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