2 edition of Overhead current collection with a servo-assisted pantograph. found in the catalog.
Overhead current collection with a servo-assisted pantograph.
Thesis (Ph.D.)- University of Birmingham, Department of Electronic and Electrical Engineering.
A pantograph is a device that collects electric current from overhead lines for electric trains or trams. The term stems from the resemblance to pantograph devices for copying writing and drawings. Invention. Example_Early () flat pantograph on a . railway applications - current collection systems - validation of simulation of the dynamic interaction between pantograph and overhead contact line: bs en railway applications - fixed installations - protection principles for ac and dc electric traction systems: i.s. en
railway applications - current collection systems - technical criteria for the interaction between pantograph and overhead line (to achieve free access). In a pantograph-catenary system, the contact resistance is an important indicator of electrical contact performance, and has a significant effect on the quality of current-collection and the.
Course Troubleshooting and Repair of Current Collection Systems provides participants with essential steps to approach troubleshooting and repair of current collection systems specifically pantograph and third rail. Approach of the Book. Each course module begins with an outline, a statement of purpose and objectives, and a list of key terms. A digital computer simulation technique is used to study the effects of changing pantograph characteristics upon the quality of current collection from simple catenary overhead equipment at high speed. In particular, the likely benefits to be derived by the use of controlled pantographs are assessed.
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Arc can maintain continuity of current collection for an electric train, but will cause hot erosion to the pantograph and overhead contact line system equipment and electromagnetic interference to the environment.
The strip and contact wire have mechanical, chemical, and electrical abrasions, resulting in abrasion of contact material. Abstract: The general characteristics of pantographs that enable current collection from an overhead contact system on light rail and heavy rail transit systems are described.
Definitions pertinent to pantographs, including general definitions, specific pantograph terminology, pantograph components, pantograph dimensions, and operating characteristics are contained in the standard.
Jiqin Wu, in Pantograph and Contact Line System, Overview. Pantograph and overhead contact line systems will be influenced by ice and/or wind during operations. Extreme weather may even damage normal operating conditions of pantograph and overhead contact line systems, leading to the failure of pantograph and overhead contact line systems.
This book covers the basic scientific theory and related application technologies of the pantograph–catenary system, including research findings on pantograph/catenary contact resistance.
railway applications - current collection systems - technical criteria for the interaction between pantograph and overhead contactline (to achieve free access) iec railway applications - rolling stock - pantographs - characteristics and tests - part 1:.
The design and performance of an active controller for a pantograph which collects current for a high-speed train are considered.
A dynamic model of the pantograph/catenary system is described and control objectives are established. A design which incorporates a frame-actuated controller and requires only a single measurement is described.
railway applications - current collection systems - validation of simulation of the dynamic interaction between pantograph and overhead contact line IEC INTERNATIONAL ELECTROTECHNICAL VOCABULARY - PART ELECTRIC TRACTION. The High Speed Current Collection Project trials, from which the now widely-used BR/Brecknell, Willis High Speed pantograph was developed, were conducted at the test track between and The principle of the trials was to validate, by experiment, the predictions of a computer program, which modelled the overhead and pantograph as a.
- Pantograph collector is quite suitable for copper-headed steel rail type of crane busbar system used for heavy duty overhead crane. 1-b) Technical Specifications by Model No.
1-b-1) EC-PG - Voltage: ACV - Current: A - Carbon Brush Size: 25mm x mm x 85mm - Weight: kg/pc - Single Shoe - Used for horizontal installation. A pantograph (or "pan", or "panto") is an apparatus mounted on the roof of an electric train, tram, trolleybus, trolley truck or electric bus to collect power through contact with an overhead line.
Battery electric buses and trains are charged at charging is a common type of current lly, a single or double wire is used, with the return current running through the rails. The interaction between pantograph and catenary is the present problematic of current collection in electrical railways.
Current collection enhancement is a key requirement for train speed-up in. BS EN simulation techniques are used to assess the dynamic interaction between overhead contact lines and pantographs, as part of the prediction of current collection quality.
This document specifies functional requirements for the validation of such simulation methods to ensure confidence in, and mutual acceptance of the results of.
For an electrical railway overhead wire system there are two main factors which crucially affect the quality of current collection. One is the spatial stiffness variation of the overhead wire along each span and the other is the flexural wave motion in the wire.
Metro and light rail vehicles using pantograph and overhead contact line current-collection systems need to use pantographs mounted on the roof and overhead contact lines to access to electricity directly through contact. The nominal voltage of contact lines is often DC kV.
railway applications - current collection systems - requirements for and validation of measurements of the dynamic interaction between pantograph and overhead contact line: en amd 1 railway applications - current collection systems - technical criteria for the interaction between pantograph and overhead line (to achieve free.
Pantograph and Contact Line System comprehensively introduces pantographs, contact lines and their interactions in many areas including geometrics, dynamics, materials, and electrics—helpful to understanding the basic theories of interaction between pantographs and contact book examines application techniques for system design, construction and maintenance, and includes.
railway applications - current collection systems - technical criteria for the interaction between pantograph and overhead line (to achieve free access) 17/ dc: 0: bs en - railway applications - current collection systems - technical criteria for the interaction between pantograph and overhead line (to achieve free access).
Conclusions The contact loss frequency between pantograph and the train overhead line is reduced. The measured currents with magnets added is significantly greater than the absence of magnets.
Current fluctuation frequencies are reduced,decreased collector head current loss thus increases the stability of the power supply system. This module provides participants an overview of current collection from the overhead catenary and its distribution to the pantograph and associated equipment.
Following the completion of this module, the participant should be able to complete the objectives with an accuracy of 75% or greater.
An instrumented pantograph has been developed by DeltaRail Group Limited that essentially exhibits the same aerodynamic characteristics as a standard high speed pantograph, which should assist engineers undertaking current collection tests and condition monitoring the overhead contact system.
This has been achieved by miniaturizing electronic systems and housing instrumentation components. To achieve good high-speed current collection, it is necessary to keep the contact wire geometry within defined limits. This is usually achieved by supporting the contact wire from a second wire known as the messenger wire (in the US & Canada) or catenary (in the UK).
This wire approximates the natural path of a wire strung between two points, a catenary curve, thus the use of "catenary" to.Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
Pages: Chapters: Overhead lines, Tram controls, Street running, Trolley pole, Ground-level power supply, Pantograph, Conduit current collection, Destination sign, Tramway track, Bow collector, Tram engine, Mekarski system.Origins.
When the bow collector was first conceived by German inventor Ernst Werner von Siemens in the late s, American inventor Frank J.
Sprague of Virginia had just patented his trolley pole system of current collection from an overhead avoid contravening this patent, the Siemens company was forced to design its own, unique form of current collection, namely the bow collector.