AUTOCHIEF-Ⅳ电动执行器及其故障分析

AUTOCHIEF—Ⅳ主机遥控速度控制系统的电动执行器，它集光、电、磁、机械技术的。应用于一体．本文从实际需要出发，介绍了该电动执行器的结构及各组成部件的作用，并分析了其常见的故障。     

What are the value and implications of two-car households for the electric car?

The major barriers to a more widespread introduction of battery electric vehicles (BEVs) beyond early adopters are the limited range, charging limitations, and costly batteries. An important question is therefore where these effects can be most effectively mitigated. An optimization model is developed to estimate the potential for BEVs to replace one of the conventional cars in two-car households and to viably contribute to the households’ driving demand. It uses data from 1 to 3 months of simultaneous GPS logging of the movement patterns for both cars in 64 commuting Swedish two-car households in the Gothenburg region.The results show that, for home charging only, a flexible vehicle use strategy can considerably increase BEV driving and nearly eliminate the unfulfilled driving in the household due to the range and charging limitations with a small battery. The present value of this flexibility is estimated to be on average $6000–$7000 but varies considerably between households. With possible near-future prices for BEVs based on mass production cost estimates, this flexibility makes the total cost of ownership (TCO) for a BEV advantageous in almost all the investigated households compared to a conventional vehicle or a hybrid electric vehicle. Because of the ubiquity of multi-car households in developed economies, these families could be ideal candidates for the initial efforts to enhance BEV adoptions beyond the early adopters. The results of this research can inform the design and marketing of cheaper BEVs with small but enough range and contribute to increased knowledge and awareness of the suitability of BEVs in such households.     

某款电动汽车充电辐射与传导整改案例浅析

车载充电系统具有高效率高功率密度等特点,其在运行过程中的电磁兼容问题日益突出。本文以某款电动汽车进行ECE R10.05充电辐射与充电传导不合格试验项目为研究对象。通过理论分析与工程经验,对样车进行针对性整改后,解决相应问题,使其满足ECE R10.05标准的要求。     

安凯G6型纯电动客车设计开发

简述安凯G6型纯电动客车的市场前景、设计思路、技术方案,以及动力系统的选型和性能参数设计,并进行仿真分析和实验验证。     

小型电力推进船舶电力系统谐波抑制的仿真研究

建立了小型电力推进系统谐波分析的数学模型,进行了谐波抑制装置的设计;利用MATLAB,采用分层结构和模块化设计实现了该系统和谐波抑制装置的数字仿真。仿真结果证明了该仿真模型和设计方法的正确性。     

高速铁路弓网电弧抑制方法的研究

弓网电弧问题是制约电气化铁道提速的主要原因之一,为此本文提出了一种弓网电弧的抑制方法.通过在车载变压器高压侧并联一个适当大小的电容,降低电源及回路电感中能量在电弧中的消耗.基于MATLAB/Simulink仿真工具提供的通用模块,建立了牵引供电系统产生电弧的模型,并进行仿真分析.最后表明,当并联到车载变压器高压侧电容值取为8.3μF时,可以使弓网电弧的能量消耗降低40%,过电压降低30%.     

TBM拆卸洞及拆机起重系统优化设计研究

TBM洞内拆机一般是在隧道内修建大断面拆卸洞,安装桥式起重机拆机。大断面拆卸洞施工难度较大,施工工期长,成本投入大。为了缩短TBM拆卸洞施工及拆机时间,减小施工难度,以南疆铁路吐库二线中天山隧道TBM拆机为例,研究设计适应性更好的小车式电动葫芦+倒链起重系统。该系统采取在隧道拱顶布设锚杆来固定导轨和独立吊点。通过对拆卸洞结构原设计方案与优化设计方案进行比选,确定优化断面的结构形式和断面尺寸,优化后拆卸洞断面缩小1/3,施工难度降低,达到安全快速拆卸TBM的目的。     

8K机车辅助电源能流循环试验台变流系统

能流循环试验台是针对8K机车辅助电源系统测试而设计的节能试验装置,用于辅助电源变流系统的日常测试和维护.辅助电源变流系统由晶闸管整流器和被测IGBT逆变器组成,负载采用PWM整流器控制输出电流.变流系统由以DSP为核心的数字控制系统控制.试验证明,该试验台能在满足额定功率测试的条件下,大大节约电能,减少噪声污染.     

内蒙古自治区机动车检测维修专业技术人员职业水平评价概述

介绍了职业资格证书制度及交通运输行业职业资格证书制度,并从机动车检测维修专业技术人员职业水平评价的组织实施、评价结果运用,以及考试、报名和成绩管理等方面作了阐述,期望为内蒙古自治区机动车检测维修行业从业人员和高职汽车专业学生了解机动车检测维修专业技术人员职业水平评价提供帮助.     

船舶电力推进系统仿真及特性实验

讨论船舶电力推进系统仿真的设计思路,并阐述仿真系统的硬件设计及方案的确定过程.搭建好硬件平台,在实验室对船舶电力推进系统中4个典型特性过程进行了仿真,对结果做出了相应的分析.