一种新型GCT集成门极驱动电路的研究

基于已有的大功率GCT集成门极驱动技术和经验，从GCT的基本工作原理入手，结合对驱动电路的具体要求和特点，提出了一种新的驱动电路拓扑结构及其控制方法。通过对新型1100A／4500V逆导型GCT集成门极驱动电路的原理性测试，验证了设计方法的正确性和拓扑方案的可行性。     

轨道牵引辅助变流系统中变压器绝缘强度的研究

简述了电晕放电的产生机理,结合实际对HXD1电力机车130 kVA辅助变压器的绝缘结构进行了理论分析和计算,并用试验数据说明了绝缘结构的可靠性.     

重载铁路牵引供电方案与接触网载流能力的分析

针对重载铁路以及交流传动机车的特点,对新建重载铁路牵引供电方案与接触网载流能力的关系进行了细致的分析,逐步深入的介绍了重载铁路牵引供电方案设计的几个关键步骤,以及详细的计算方法,并提出了设计中应注意的问题。     

HXD2型大功率交流传动货运电力机车牵引电传动系统

介绍HXD2型大功率交流传动货运电力机车牵引电传动系统的电气原理、技术参数、性能特点和结构组成,对牵引电传动系统的各关键部件和装置组成进行了详细的功能描述。     

国内外混合动力客车动力总成方案此较研究

简要介绍混合动力客车动力总成方案分类，重点介绍国内、外典型的混合动力客车动力总成方案；通过对国内、外方案动力总成方案的比较，提出推广我国混合动力客车的建议。     

电动燃油泵换向器磨损原因分析和解决方案

由于乙醇汽油的应用，电动燃油泵的铜换向器磨损加速，严重影响了该产品的寿命，本文对磨损加速的原因进行分析，并提出解决方案。     

准高速电力机车牵引齿轮优化设计

在对国内外机车牵引齿轮现状进行深入调查的基础上，提出了从优选材料及热处理工艺、进行齿形和参数优化设计、合理选择制造精度与工艺，优选润滑剂与润滑密度方式，改善动力学性能等五个方面提高我国准高速电力机车牵引齿轮动承载寿命的具体措施，其中在齿形和参数优化方面，设计了优选 角并能使齿根危险断面齿厚尽可能大，而应主 磨前滚刀，优选出能使啮合过程中最大闪温值为最小的变位系数，并在此了考虑机车启动、持续与高速运     

牵引模式对C0-C0架悬式机车粘着性能的影响

分析了牵引模式对C0-C0架悬式机车粘着性能的影响.通过对牵引装置不同布置方式进行比较,指出机车的轴重转移量以车体中央截面成对称分布,对应轮对上的粘着质量利用率之和为定值;并提出牵引点高度对机车粘着性能影响较大,而牵引装置布置方式对其影响较小,机车设计时需根据悬挂特性选择合适的牵引点高度.     

The effects of wheelset driving system suspension parameters on the re-adhesion performance of locomotives

In this study, in order to examine the effects of a wheelset driving system suspension parameters on the re-adhesion performance of locomotives, the stick–slip vibration was analysed according to theoretical and simulation analysis. The decrease of the slip rate vibration amplitude improved the stability of the stick–slip vibration and the re-adhesion performance of locomotives. Increasing the longitudinal guide stiffness of the wheelset and the motor suspension stiffness were proposed as effective measures to improve the re-adhesion performance of locomotives. These results showed that the dynamic slip rate was inversely proportional to the series result of the square root of the longitudinal guide and motor suspension stiffness. The larger the motor suspension stiffness was, the smaller the required longitudinal guidance stiffness was at the same re-adhesion time once the wheel slip occurred, and vice versa. The simulation results proved that the re-adhesion time of the locomotive was approximately proportional to amplitude of the dynamic slip rate. When the stick–slip vibration occurred, the rotary and the longitudinal vibrations of the wheelset were coupled, which was confirmed by train's field tests.     

Coupler jackknifing and derailments of locomotives on tangent track

A number of derailments occurred in recent years due to coupler jackknifing, some of them were reported on tangent tracks where conventionally thought to be the safer sections. This article studied coupler jackknifing behaviour and its implications for locomotive safety on tangent tracks from the experience of China heavy haul. Three types of coupler systems were modelled and simulated regarding coupler jackknifing behaviour. Two typical locomotive derailments occurred on tangent tracks were analysed. From the derailment experience, coupler angle self-lock behaviour was introduced and simulated. An approach to determine coupler angles in the jackknifed position was derived and validated with a self-coded program and SIMPACK. Methods to prevent coupler jackknifing were also evaluated with regard to locomotive stability.