City Class 29.2400.3 Tram

Presentation by

TRAM Power Ltd.

Unit 4

Carraway Road,

Liverpool L11 OEE

tel. +44 (0)151 548 7040

web : www.trampower.co.uk

Prepared by

Professor Lewis Lesley

Design Principles

• Proven design concept• The City Class tram from TRAM Power Ltd.

• Has world wide application.

• Innovative design and “components off the shelf”.

• Components off the shelf (COTS) reduces costs

• Low initial, low maintenance and low whole life costs.

• The City Class tram is a highly efficient public transport vehicle.

• Can compete with buses on operating costs.

• Matches light rail for speed and comfort.

Mechanical

• TRAM Power design bogie– low track forces (bogie weight = 2200 kg)

• All wheels separately rotate - – eliminating curve squeal

• Wheels individually removable – for maximum life (>300,000 km)

• Ultra comfort resilient wheel, need not be same diameter– Smoother ride for passengers

• Central Articulation carried on two wheels– best use of space

Electrical• Body mounted traction motors -

– easy maintenance

• No equipment inside passenger saloon - – full width flat floor

• The light weight (22 tonnes) reduces power – saves more in electricity than the initial purchase price.

– saves on infrastructure requirements.

• Three phase AC drive, with regeneration to stand still

• Programmable acceleration / braking and jerk rates

• 10% gradient capable

• PLC “fly by wire” control system

Body & Structure• Integral high strength body

– fabricated from rustless steel (long life > 30 years)

• Timoshenko crash worthy cab, – with driver survival zone

• High passenger capacity (e.g. 200 in 29 metre vehicle)

• Compatible with all passenger facilities,– e.g. air conditioning

– Easy mid life modification,

– adding longer articulation unit to increase capacity to 300 passengers

• Low floor (300 mm) and high floor (760 mm) options

• Length in 1500 mm modules, from 16000 mm to 38000 mm

• Width from 2400 mm to 3500 mm

• Height from 2900 mm (including double deck option)

• Flat articulation floor, with clear passage 1000 mm wide

Development

• Computer simulations

• laboratory models

• bench testing

• mock up

• slave vehicle

• prototype tram

• production vehicle

Testing• Mock up

– built 1993 for trade exhibition

• Slave vehicle– 1930 tram with – TRAM Power equipment at one end– operated 1995 - 1997

• Prototype– tested at Blackpool 1998 and 2000 – with HMRI approval.

Mock up

• 4 tonne

• Low/High floor - 25% length full size

• Exhibited and market research in

– Birmingham, Blackpool, Chatham, Dublin, Edinburgh, Gloucester, Liverpool, London & Sheffield

Slave Tram

• Redundant 1930’s tram for scrapping

• One original bogie and drive removed

• TRAM Power bogie

• 90kW 3phase industrial motor and

• Inverter drive fitted

• Tested on Blackpool Tramway 1995 - 1997

Prototype Tram

• 29m long• single articulation• bogie, motor and inverter from Slave tram• with second identical set added• tested with HMRI approval 1998 - 2000

Production Vehicle

• Prototype completely refurbished 2005

• new motors– smaller– more powerful

• new inverters– smaller– more powerful

The City Class Family

• 15 m horizontal track radius

• 100 m vertical curve capable

• Magnetic track brakes for emergency braking

• MU compatible

Easy to move

Each LRV needs only 3 trucks to move

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