Traction electrical equipment

for 100% low floor tramcar

Traction EquipmentBasic features

• State of the art components• Modular design • 100% low floor design• Fully swiveling bogies• Individual drive of every single vehicle wheel• Permanent magnet synchronous motor• High torque of the motor – direct drive (no need of the gearbox)• Significantly reduced noise• Independent electric brake

15T - ForCity 250 tramcars for Prague – Czech Republic

• 3 section vehicle• 100% adhesion

15TR - ForCity 20 tramcars for Riga – Latvia

• 3 section vehicle• 75% adhesion (one non-driven bogie)• Fully air-conditioned passenger area

15T - ForCity Components by Skoda Electric

• 16x Synchronous traction motor with permanent magnets

• 4x Traction unit for traction motor supply

• 1x Static converter for auxiliary drives and battery charger

• 1x 24 volt battery

Traction unit TJ1.1

• Inverters for an independent supply of four traction motors (one bogie)

• Input circuits for regenerative and resistive braking

• Contactors between inverters and traction motors

• Microprocessor control units

• Heat exchanger and cooling pump for traction motor cooling integrated in the traction unit

• Forced air cooled brake resistor integrated in the traction unit

Traction unitBasic features

Traction unit3D model

Dimensions: 1500x1500x498mmWeight: 481kg

Block diagram

Traction unitBasic parameters

Technical data of one inverter (4 inverters in the unit)

Maximum power in drive mode 120 kVANominal input voltage 600 or 750VOutput voltage 3AC 0 - 500 VOutput frequency 0 – 280 HzSwitching frequency 4kHz

Characteristic of the drive

Torque of one traction motor

Power of one traction motor

Drive

Brake

Traction motor

Traction motorBasic features

• Permanent magnet synchronous motor

• High torque – 2270Nm

• Water cooling

• Integrated position sensor for propulsion control and speed sensor for brake system

Traction motor 3D model

Traction motor Basic parameters

Maximum power (drive mode) 46.6kWVoltage 3 x 392 VMaximum current 142 ANominal current 85 ANominal speed 196 RPMMaximum speed 706 RPMClass of insulation HProtection class IP54

STATIC CONVERTER SM36.1

• Provides supply of tram auxiliary drives and for battery charging• Converters are equipped with output sinus filter• IGBT technology

Output three-phase AC voltage rating 3 AC 400 V ± 4%Rated power of each section 14 kVANumber of sections 2Output one-phase AC voltage rating 2 AC 230 VRange of output DC voltage 24 V – 30 VMaximum output DC current 240 A

Static converter

Features and Parameters

Static converter 3D model

Dimensions: 1450x1520x482mmWeight: 386kg

BATTERY ENCLOSURE BS1.1

Battery enclosureFeatures and parameters

• 24V battery

• Maintenance free design

• Temperature sensor on the battery for a temperature charge compensation• Mechanically operated battery disconnect switch• Circuit breaker for an external charger• Capacity of accumulator battery 220 Ah• DC voltage rating 24 V DC + 25 %, -30%

Battery enclosure3D model

Dimensions: 1450x470x504mmWeight: 282kg

Various number of driven bogies

Each traction unit corresponds with one driven bogie

Reversed polarity of the trolley

Change of electrical connection without changes of mechanical design

Emergency drive of the traction inverter from the LV battery

Installation of additional circuits without significant changes of mechanical desig

Fully air-conditioned passenger area

Static converter with increased output power

Possible modifications of the equipmentaccording to customer individual requirements

• Equipment designed for 100% low floor vehicle with fully swiveling bogies

• Compact design of permanent magnet synchronous motor• High torque of the motor – direct drive (no need of the gearbox)• Significantly reduced noise

Traction Equipment

Advantages compared to conventional solution