ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004最新文献

{"title":"Results of investigation of the properties of railway vehicles with the new design of wheelsets using the computer models and field tests","authors":"L. Vinnik, G. Bourtchak","doi":"10.1115/RTD2004-66010","DOIUrl":"https://doi.org/10.1115/RTD2004-66010","url":null,"abstract":"The results of linking research on analysis of the railway vehicle properties with the new designs of wheelsets, allowing various angular velocities of the tread rotations relative to the hubs by retaining gravitational-frictional torsional connection between them, are considered. Through an analysis of dynamic features during the hunting motion of the vehicle, carried out on the computer model using the nonlinear creep theories, the advantages of this design are found, which include first of all the decrease of wheel and rail wear, and improvement of dynamic features. The issue of metro cat motion in the traction mode is specially considered. Tests on physical models and field tests of the tram and metro car verified the results received on numerical models.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116742322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of new technologies in traction power systems","authors":"S. Sagareli, V. Gelman","doi":"10.1115/RTD2004-66014","DOIUrl":"https://doi.org/10.1115/RTD2004-66014","url":null,"abstract":"Due to significant developments in power electronics since the 1980's, a row of new components are being used for both utility and traction power substations, leading to new concepts in their design and construction. Among others, such innovations as incorporation of microprocessor-based multi-function protective relays and programmable logic controllers are changing traditional substations' equipment layout and inter-connections: the development and experimental use of thyristor rectifiers and solid-state DC circuit breakers is under way. A significant reduction in the amount of protective and control devices (and associated wiring) has been achieved by introduction of multi-function relays (MFR or MPR - multi-purpose relay), capable of replacing a whole group of relays used for equipment protection and automated control: for example, one MFR may perform functions of overcurrent and ground fault protection, over- and undervoltage protection, fault sensing and reclosing. Plus, it may be used for data logging and data recording purposes. Additionally, high end MPRs have remote access features allowing not only to set any parameters, but even provide firmware upgrade without visiting the substation, thus providing labor savings. Therefore, one MFR may replace about a dozen of traditional relays and devices, along with their wiring and save maintenance expenses as well. Thyristor controlled rectifiers (TCR's) are another significant innovation in traditional DC traction power substation design. Thyristor rectifiers are offering very important benefit of regulated DC voltage: at the substation's bus output, the voltage may be constant from 0 to a 100% or even 150% load, which means improved train performance in terms of speed and reliability, as well as lower losses of energy in third rails, and possibility of raising third rail system voltage in the future, thus further lowering losses of energy in the system. Alternatively, it allows increasing the distance between the substations and thus reducing total number of substations. LIRR installed one thyristor rectifier for experimental use in 2003. Flywheel-based energy storage system is another important innovation that is being installed by the LIRR for experimental use. LIRR is installing for experimental use trackside flywheel energy storage system developed and tested by the British uranium enrichment company URENCO. According to Tarrant, in March 2002 the company successfully tested the KESS - kinetic energy storage system and demonstrated 11% to 18% energy savings in different conditions of operation, because of the lower losses due to higher voltage during the acceleration period.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"70 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131662686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid technology for the rail industry","authors":"F. W. Donnelly, R. Cousineau, R. Horsley","doi":"10.1115/RTD2004-66041","DOIUrl":"https://doi.org/10.1115/RTD2004-66041","url":null,"abstract":"A new type of battery-dominant hybrid technology has been developed for the rail industry. Switcher locomotive service is characterized by highly variable power output use. This variability in demand is exploited to allow the use of a significantly smaller, fuel-efficient, Tier 2 certified, low maintenance engine and generator combination to supply energy to the traction motors and to the application-engineered battery pack. In the last three years, a demonstrator vehicle, the Green Goat/spl reg/, has been designed, tested, constructed and put into field trials for 18 months in various locations and types of service, with impressive (performance and operational) results. The design, concept, field trials results, as well as applications of the technology to other types of service, are discussed.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124481179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CCS: a railway corridor control system utilizing ultra wideband radio technology","authors":"P. A. Flaherty","doi":"10.1115/RTD2004-66015","DOIUrl":"https://doi.org/10.1115/RTD2004-66015","url":null,"abstract":"Ultra wide band (UWB) radio is a unique technology, which combines a megabit wireless local area network with a centimeter-resolution radiolocation (RADAR) capability over, distances less than 100 meters. A linear chain of UWB nodes can be used to create a hop-by-hop data transmission network, which also forms a RADAR \"corridor\" along the chain. By co-locating such a chain of nodes along a railroad right-of-way, precise information on the location and velocity of trains could be distributed throughout the corridor. In addition, the radar corridor would detect the introduction of track obstacles such as rocks, people, and automobiles, as well as shifted loads and other high-wide train defects. Finally, the network of nodes would enable off-train communications with payload sensors, locomotive computers, and could also provide wireless connectivity for passenger service.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117211653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dynamic stiffness and damping model for rail car center plate polymer liners","authors":"R. R. Katta, T. Conry","doi":"10.1115/RTD2004-66021","DOIUrl":"https://doi.org/10.1115/RTD2004-66021","url":null,"abstract":"The center plate interface is made up of the body plate attached to the car body bolster, the polymer liner, and the bolster bowl, which is a part of the truck bolster. Roll motion of the rail car leads to the car body bolster rolling over the polymer liner on the truck bolster, which may result in partial loss of contact of the body plate with the polymer liner. This nonlinear phenomenon has a deleterious impact on the rail car dynamics. A technique for creating a center plate dynamic model accounting for the polymer liner and the loss of contact condition is presented here. Material tests were performed to model the stress-relaxation of the liner. A stiffness/damping model of the center plate accounting for the nonlinear effects of the lift-off was developed based on a nonlinear Winkler foundation model and was tested for a one-degree-of-freedom dynamic model. This continuous model was adapted into a 16 stiffness-damping element model to enable its usage in a NUCARS/spl trade/rail-car dynamic model.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125717984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An overview of interface management","authors":"P. Harrison, B. Hamilton","doi":"10.1115/RTD2004-66017","DOIUrl":"https://doi.org/10.1115/RTD2004-66017","url":null,"abstract":"Major factors affecting the reliability of railroad or transit systems are assigned at the design stage of a project. After the design of the system has been finalized changes that can be implemented to improve the reliability are generally of the second order level and subsequently have a lesser effect. An area that has traditionally been a source of unreliable operation for railroad and transit systems has been the interfaces between the various systems. The system-to-system interfaces cover the whole of the range of areas in a railroad or transit system and are often visible to the passengers using the railroad or transit system. The interfaces to be controlled have a wide variety of characteristics and features. These interfaces can consist of mechanical issues like for the platform and vehicle interface. The interfaces can also be mainly electrical in nature as with the control of conducted interference currents at the vehicle power supply interface to achieve compatibility. Interfaces may also be a mixture of mechanical and electrical characteristics. Railroad and transit systems are becoming more sophisticated, it is now common for a rail vehicle to have multiple microprocessors on board to control the various systems needed for a modern rail vehicle. Similar technologies are also being applied to different systems of a railroad or transit system. For example the technology required to control a vehicle propulsion system is very similar to that required by the modern regenerative substation. Modern integrated systems are also spreading across the traditional system boundaries. For example an integrated passenger information system for an LRT or Metro system would span vehicles, stations, train control and communication systems. A key factor to improving the reliability of a railroad or transit system is early and effective control of the system interfaces and having the appropriate organization(s) responsible for the interface. This paper explores the factors that would need to be considered for appropriate management of the interfaces. It relates the management of the interfaces to the types of contract mechanisms that can be used for procurement of equipment and consider the associated advantages and risks.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131851458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of traction power distribution system impedances and susceptances for AC railroad electrification systems","authors":"T. Kneschke, P. Mbika","doi":"10.1115/RTD2004-66011","DOIUrl":"https://doi.org/10.1115/RTD2004-66011","url":null,"abstract":"Electrical characteristics of the traction electrification system, together with the train power demand, headway, and operating scenario, are the key factors in determining the overall system performance. A mathematical procedure for calculation of traction power distribution system line impedances and capacitances is developed using the alternative transient program (ATP). The technique is applied to direct feed and autotransformer feed traction electrification systems and typical results for one-, two-, three-, and four-track railroads are presented. All self- and mutual impedance and capacitance components are included in the calculations.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116307317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The next generation of air supply units","authors":"J. Beaver, K. Hering","doi":"10.1115/RTD2004-66002","DOIUrl":"https://doi.org/10.1115/RTD2004-66002","url":null,"abstract":"This paper describes the evolution of the original air supply units as oil-lubricated piston compressors to the new range of Knorr-Bremse oil-less piston compressors. These compressors provide reliable, cost-effective, operation in a railway environment. The design features of the oil-free piston compressor are described and the operational advantages over conventional oil-lubricated reciprocating compressors are highlighted.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124880833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of train dynamics in passing through curves using a full model","authors":"M. Durali, M. Bahabadi","doi":"10.1115/RTD2004-66044","DOIUrl":"https://doi.org/10.1115/RTD2004-66044","url":null,"abstract":"In this article a train model is developed for studying train derailment in passing through bends. The model is three dimensional, nonlinear, and considers 43 degrees of freedom for each wagon. All nonlinear characteristics of suspension elements as well as flexibilities of wagon body and bogie frame, and the effect of coupler forces are included in the model. The equations of motion for the train arc solved numerically for different train conditions. A neural network was constructed as an element in solution loop for determination of wheel-rail contact geometry. Derailment factor was calculated for each case. The results are presented and show the major role of coupler forces on possible train derailment.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131475121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced light rail vehicle communication systems design","authors":"J. Swanson","doi":"10.1115/RTD2004-66018","DOIUrl":"https://doi.org/10.1115/RTD2004-66018","url":null,"abstract":"The use of electronic subsystems to perform complex tasks has grown in the consumer goods and automotive sectors to such a degree that these capabilities have become commonplace, yet in the field of light rail vehicles, they have made relatively little impact. The technology exists today to provide greatly increased passenger safety, security and system operational efficiency by the judicious application of mature subsystem designs. Such systems includes radio based, fully integrated vehicle management systems with GPS, silent alarm capability and passenger information control, external passenger door and coupler monitoring video cameras, forward facing video recording for accident investigations, interior video recording for reduction in vandalism, interior video cameras linked to passenger to operator intercoms to provide the operator with more information and the transfer of data to and from vehicles via wireless LAN. This paper describes the application of these subsystems to the new Phoenix light rail vehicle and project what the future may hold.","PeriodicalId":217214,"journal":{"name":"ASME/IEEE Joint Rail Conference, 2004. Proceedings of the 2004","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121294091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}