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Traction electrical equipment for 100% low floor tramcar.

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Presentation on theme: "Traction electrical equipment for 100% low floor tramcar."— Presentation transcript:

1 Traction electrical equipment for 100% low floor tramcar

2 1859Count Valdštejn founds the engineering plant 1869Emil Škoda becomes the owner 1920setting up of a new electrical engineering plan in Pilsen 1923launching the manufacture of tram motors 1985manufacture of the first AC traction drive 1998first tramcar with asynchronous traction motor and IGBT converter 2003foundation of ŠKODA ELECTRIC s.r.o 2008first tramcar with synchronous traction motor with permanent magnets History of tramcar traction equipment in SKODA

3 Traction Equipment Basic 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

4 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

5 15T - ForCity Components by Skoda Electric 16xSynchronous traction motor with permanent magnets 4x Traction unit for traction motor supply 1x Static converter for auxiliary drives and battery charger 1x24 volt battery

6 Traction unit TJ1.1

7 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 unit Basic features

8 Traction unit 3D model Dimensions:1500x1500x498mm Weight:481kg

9 Block diagram

10 Traction unit Basic parameters Technical data of one inverter (4 inverters in the unit) Maximum power in drive mode 120 kVA Nominal input voltage 600 or 750V Output voltage 3AC 0 - 500 V Output frequency 0 – 280 Hz Switching frequency4kHz

11 Characteristic of the drive Torque of one traction motor Power of one traction motor Drive Brake

12 Traction motor

13 Traction motor Basic features Permanent magnet synchronous motor High torque – 2270Nm Water cooling Integrated position sensor for propulsion control and speed sensor for brake system

14 Traction motor 3D model

15 Traction motor Basic parameters Maximum power (drive mode)46.6kW Voltage 3 x 392 V Maximum current 142 A Nominal current85 A Nominal speed196 RPM Maximum speed706 RPM Class of insulation H Protection classIP54


17 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 kVA Number of sections2 Output one-phase AC voltage rating 2 AC 230 V Range of output DC voltage 24 V – 30 V Maximum output DC current 240 A Static converter Features and Parameters

18 Static converter 3D model Dimensions:1450x1520x482mm Weight:386kg


20 Battery enclosure Features 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%

21 Battery enclosure 3D model Dimensions:1450x470x504mm Weight:282kg

22 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 equipment according to customer individual requirements

23 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

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