Tram: Škoda 15T

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Basic informations

• Tram special for Prague

• 3 sections

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From trhe passenger view

• 61 sitting places

• 239 standing places – 8 persons/m3

• 1 place for baby car or disabled person

• High of floor above platform: 350 mm/450mm, without steps- low floor 100%

• vmax 60 km/h

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Mechanics

• Car length 31400 mm

• Car width 2460 mm

• Car high 3600mm

• Rotary bogie type Jacobs. That means under section link

• Rotary sections

• Uspořádání pojezdu Bo´Bo´Bo´Bo´

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Bogie

• Free wheels– Wheels are not connected with shaft– The space for shafts is used for low floor

– Good driving features in curves

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Brakes

• Electro dynamic brakes recovering or into resistances– Main brake• Electrohydraulic brakes with disks directly on

Wheels– Park and emergency brake– The pressing forth is performed by spring. Releasing

is performed with hydraulic• Elektromagnetic friction rail brake.

_supplied from battery_Emergency

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Drive

• Every wheel is driven separatly by a tgraction motor

• TM is situated crosswise in the bogie

• No gear box. Wheel is directly driven.

• Between wheel and traction motor is a short elastic clutch

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Electric equipment

• 4 bogies whith 4 synchronnous TM each. 16 TM and 16 invertors with IGBT.

• Convertor for auxiliary drives and battery charging

• Battery

• Everything is on the roof.

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Equipment in tram arrangement

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Traction motor

• 3 phase permanent magnet synchronous motor. • Type HLU 3436P/44VA• Pn = 46,6kW• Un = 3 x 387V• In = 149A• nn = 196 ot/min• nmax = 706ot/min• Class isolation H• Whater cooling• Mass 252kg

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Traction motor

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Traction motors in bogie

Foto: David Dienstbier

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Traction convertor

• Common block for one bogie ~ 4 TM– 4 common blocks with IGBT – air cooling– Brakin resistance– Water cooler for TM

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Traction convertor parameters

• Incoming voltage Udc = 600V• Outgoing voltage Us = 0 ÷ 500V• Outgoing frequency f = 0 ÷ 280Hz• Outgoing current Imax = 98A for each

motor

• Maximal power of the convertor 4x46, kW

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Traction convertor

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Container for auxiliary drive convertors

• Convertor 3x400V/230V~– 2 outgoing voltages– Pmax 14kVA every output

• Convertor for battery chrging 24V=– Imax 240A

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Container for battery

• Situated on the roof

• Battery capacity 240Ah

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References

• www.skoda.cz

• Firemní materiály fy. Škoda Electric