TramWaveCatenaryless power supply system
Robert VitaliMass Transit Product Manager
Ansaldo STS
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tTramWave solution
TramWave is the key technology to :
• design the future of cities in a “low carbon” scenario.
• maintain and preserve natural or cultural heritage, artistic beauty
landmarks and monuments
• make life more pleasant for the residents
• respect the urban legacy and the old buildings near the line
• integrate multi-modal urban transit solutions
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tIntroduction to TramWaveCharacteristics of the application
• TramWave is an innovative power supply solution designed to minimize :
Visual impact removing the overhead catenary Displacement of utilities (water pipes, gas connectors, electrical grid etc.)Constraints to urban vehicular and pedestrian circulation. Effect of stray currentsPollution
• TramWave is as solution apt to maximize :Eco-friendliness Safety (only gravity and electro-magnetic principles), reviewed and validated by TŰV RhinelandAbsence of electronics to guarantee safety in all conditionsLimited width of the powered sectionDiagnostic level in all perturbed conditions
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tIntroduction to TramWaveCharacteristics of the application
• TramWave is a solution designed to be applicable to:Tram linesBus lines Special purpose vehicles (utility vehicles, urban maintenance vehicles, etc.)A mix of any of the previousNew concept of private vehicle + urban development
• TramWave is a flexible and modular system designed to be adaptable to a widespread array of configuration and demands of administration and planners
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tIntroduction to TramWaveCharacteristics of the application
• Tram application:Continuous power supplySame level of performance as per traditional catenary (VAC, acceleration, speed etc.)No need of auxiliary systems onboard for autonomous movementTramWave, can virtually be installed on any rolling stock providerMixed mode power supply. TramWave and traditional catenary (i.e. TramWave in historic or architectural centers, traditional in the suburbs)
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tIntroduction to TramWaveCharacteristics of the application
• Bus application:Same level of performance as per traditional buses (VAC, acceleration, speed etc.)Auxiliary systems onboard for autonomous movement off the TramWave sections to overcome obstacles on the line Auxiliary systems onboard for autonomous movement off the TramWave sections even for considerable length, up to 5-6 kmShort recharge time on the tramwave line while running (5 minutes per km off TramWave line)Passive self-centering system of the pickup shoe over the TramWave line
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tIntroduction to TramWaveCharacteristics of the application
• TramWave is covered by several worldwide patents owned solely by Ansaldo STS
• TramWave has been implemented in all electric bus version in TRIESTE (Italy)
• TramWave has been revised and assessed by TϋV Rhineland
• TramWave has been homologated by the Italian Ministry of Transportation in March 2002
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tAll Electric Bus TramWave application
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tTramWave tram application
TramWave installed on the test track in Naples.Stress tests for extreme and unusual conditions
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tTram application in the test site in Naples
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tTramWave for Florence
SectionTramWave
DUOMO
MARTELLIAnsaldo STS is the leader for theConstruction of 3 tramlines in Florence
Dome
Brunelleschi
Giotto Tower
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TramWave Concept
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tBasic functioning concept of TramWaveBasic functioning concept of TramWave
Insulating material
Surface plate
VariablepolarityElements
Inside contactsuface
Pick-upguideng rods
Surface Plate
Positive Feeder Negative Feeders
Tranfer Contacts
Flexible Strip Waterproff Housing
Waterproff Housing
Insulating material
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tBasic functioning concept of TramWaveBasic functioning concept of TramWave
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Modules NOT activated
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Modules activated
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tPower collector and activated modules
100 cm
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tModule layout
The TramWave LineThe TramWave Line
3 or 5 m
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t •The magnetic power collector in the upper position is unable to activate the power line segments; the pulling force is not enough to lift up the belt.
•The vehicle can run over the line without activating the segments
•All the segments stay connected to ground.
Power collector rest position
Power collector active
•the power collector is in contact with the line segments
•the flexible belt reaches its working position and activates theunderlying segment (s)
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Street level section with the line fully equipped, circulation ready for tram as well as all electric buses
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860mm
410m
m78
,00
Three main functionsActivation of line segmentsCurrent pick up and current return Guide the power collector over the line
centering centeringBelt lifting up
Current pick up and return
The vehicle magnetic power collector or pickup shoe
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t• The activated part of the line is
always enclosed by elements connected to the negative.
These element act as a “Virtual Protection ring”The protection ring follows the power collector .Safety is always assured even in case of water puddles .The running rails act as a second barrierThe voltage level all around the activated part remains in any condition lower than the standard requirements.
0,04
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Voltage disribution along the line
Longitudinal
Transverse
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t V long
750,2748,5
53,763,7 0,30,10
100200300400500600700800
1 2 3 4 5 6
Plates
Voltage distribution along the direction of motion
1 2 3 4 5 6
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V trasv
750,2
0,5 7,6 7 6,4 5,8 4,4 3,6 0,10
100200300400500600700800
1 2 3 4 5 6 7 8 9
Voltage distribution along an orthogonal direction to the motion
1 2 3 4 5 6 7 8 9
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t • The design of TramWave assure the safety of the system even in the most severe conceivable accident events:
the “stick” of a positive contact
• The diagnostic system allows a fast detection of the faulted module.
TramWave intrinsic safety concept
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Power Collector
Negative Feeder (traction currente)
Positive Feeder (traction current)
Safey Negative Feeder
Variable polarity plates
trip signal
tripsignal
Main Switch
Negativo di protezione
Piastra a polarità variabile
Rivelazione modulo "occupato"attiva
Current flow on the safety negative feedergenerates a signal to open the main switch
TramWave intrinsic safety concept
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tTramWave visual impact example