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Самостійна робота студентів медиків, основні проблеми та методи їх подолання [PDF]

, 2019
У статті відображається роль самостійної роботи студентів у сучасному навчальному процесі і розкриваються питання, що виникають при організації самостійної роботи студентів.
Живілова, Я.С., Спіріна, І.Д., Шорніков, А.В.   +2 more
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Thermal Management Technology of New-generation High-voltage SiC Devices Applied in Rail Transit Traction System

机车电传动, 2020
The wide band-gap devices represented by SiC are becoming the research focus of power semiconductor devices. The new generation of high-voltage packaging is the main packaging form for high-power SiC devices to cope with high-voltage, heat dissipation ...
Kai HE, Xingzhi WANG, En TIAN, Yanping CHEN, Zechun DOU   +4 more
doaj  

High-frequency Negative Effect Analysis and Countermeasures of Traction Inverter Based on all SiC MOSFET for Rail Transit

机车电传动, 2020
After the adoption of SiC device in traction converter for rail transit, the design of traction system will be negatively affected by the high switching speed and high switching frequency of power switch devices.
Yongjian ZHI, Deyong YANG, Bingquan ZHU, Keliang YUAN, Zifan GAO, Pengfei LI   +5 more
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Research on Energy Consumption and Energy Saving Measures of Metro Vehicles

机车电传动, 2020
Based on the current situation of metro vehicle operation energy consumption, the main components of metro energy consumption from two aspects of traction energy consumption and auxiliary energy consumption were analyzed, as well as the key influencing ...
Feilong TANG, Qingjun HAN
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Performance Evaluation of Train Communication Network Based on Cloud Model and Combination Weighting Method

机车电传动, 2020
In the view of the lack of quantitative assessment in the performance assessment of the train communication network, a train communication network evaluation method, based on cloud model and combination weighting method, was proposed in this paper ...
Guoqiang LIU, Deqiang HE, Yanjun CHEN, Xiaoyang YAO   +3 more
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Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway

机车电传动, 2020
As the axle weight of the locomotive continues to increase, the wheel-rail wear is intensified, and rail corrugation on the small radius curve becomes more and more common.
Zhiwei LIU, Jianxin LIU, Jiufeng CAI, Azhong ZHANG   +3 more
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Research on Noise Characteristics and Control Technology of Metro Energy Feedback Converter

机车电传动, 2020
The noise characteristics of metro energy feedback converter were experimentally studied to analyze the main noise source, noise transmission rules and the acoustic performance of the inlet/outlet structure.
Zhenpeng LI, Yulong ZHU, Jie DING, Xiang ZHANG, Yongsheng WANG, Xiaobin ZANG   +5 more
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Hazard Analysis and Risk Assessment of Rail Transit Rolling Stock System

机车电传动, 2020
In order to ensure the safety of operations, the risks of operation accidents such as fatality must be assessed, which were caused by failures of urban rail transit rolling stock system.
Geliang LI, Zhigang MO, Yani LIU, Yuanbin LYU   +3 more
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Development of Specification for Dynamic Performance Assessment and Testing Verification of Rolling Stock

机车电传动, 2020
The development background and main technical contents of the national standard GB/T 5599—2019 "Specification for Dynamic Performance Assessment and Testing Verification of Rolling Stock" was introduced, focusing on the development of parameter related ...
Li XU, Chunshuang NI, Meng CHEN, Wei WU
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Research on Control Strategy of Electric Mining Dumper Converter

机车电传动, 2020
Electric mining dumper has been a key research object in mining industry. Owing to its special operating conditions, the control mode of mining dumper needs to be well studied and selected.
Tao ZHANG, Yaping HE, Xi HE
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