Traction Converter Cubicle Overview

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Questions and Answers

In AC mode, what is the nominal input voltage of the Traction Converter Cubicle?

2 x 950 V AC
1500V DC
Both A and B (correct)
None of the above

What is the name of the control unit situated inside the Traction Converter Cubicle?

Traction Control Unit (TCU)

What is the frequency range of the AC mode input?

46Hz - 54 Hz

What is the nominal DC link circuit voltage during traction operation?

AC Mode 1800 V, DC Mode 1500 V Signup and view all the answers

The Traction Converter works on a single voltage system.

False (B) Signup and view all the answers

What is the approximate power factor in AC at different loads and line voltages?

Approx. unity Signup and view all the answers

What are the primary components of the Traction Converter?

All of the above (D) Signup and view all the answers

The function of the Traction Converter is controlled and monitored by which unit?

Siemens' Traction control unit (TCU) SIBAS® 32S Signup and view all the answers

What are the functional sections of the Traction Converter in AC mode?

All of the above (F) Signup and view all the answers

What is the purpose of the pre-charging unit in the input section of the Traction Converter in AC mode?

To prevent high inrush current when the converter is switched on Signup and view all the answers

What is the purpose of the Four Quadrant Chopper Module (4 QC) in the Traction Converter?

To transform the input voltage into a controlled direct voltage for the DC link circuit. Signup and view all the answers

Describe the function of the IGBTs in the Four Quadrant Chopper Module.

They act as switches with a high closing sequence, controlling the flow of current through the transformer. Signup and view all the answers

What is the purpose of the Pulse Width Modulated Inverter (PWMI) in the Traction Converter?

To generate a sinusoidal current for the traction motors. Signup and view all the answers

What is the function of the brake chopper in the Traction Converter?

To provide braking force to the Traction Motors. Signup and view all the answers

What is the mechanism of forced ventilation used in the Traction Converter Cabinet?

The Traction Converter Cabinet uses a forced air-cooled system, utilizing blowers to circulate air effectively. Signup and view all the answers

Match the following component descriptions with their corresponding types.

SP1500FL = IGBT Module - Single Parallel SD1500FL = IGBT Module - Double 4PK9904-7AB = Line Filter Choke LTHS-1250-2P = Line Contactor - DC Main-Line LTHS-800-2P = Line Contactor - AC Main-Line LTC-250-2P = Pre-charging Contactor - DC LTC-250-1P = Pre-charging Contactor - AC 2CS7-410-1RG11-0KK3 = Main Blower 148DH9LM = Auxiliary Blower DCMKP 2.2/3mF or E56.M45-305680 = DC Link Capacitor P354.1-IGBT = DC/DC Power Supply CS1000BRVE or LTC600-SFC-SPxx = Current Transducers A5E00303286 = Voltage Transducers TV 1164 (CT) = Intermediate Transformer Current BNV 05.110.d/0.5 X2 = SIBAS Filter Power Supply 31138210 = Temperature Sensor - Air Inlet PVR900T or GBS 60/370 60R +/-5% = Pre-charging Resistor - DC PVR160 or GWS 300 SB 33K +/-5% = Discharge Resistor - DC Link PVR160 or GWS 300 SB 99K +/-5% = Discharge Resistor - DC Link B25835-S2224-K057 = Grounding Capacitor 3RT10172K F420LA0 = Contactors for Blower Circuit 3RH11222K F400LA0 = Auxiliary Contactors 6FH4742-1A = SIBAS 32 S 343434 = DC Link Circuit TV 1162 (VT) = Intermediate Transformer Voltage A5E00422668 = System Voltage monitoring 621961 = SIBAS Filter Power Supply 279729 = Air Inlet Temperature A5E00422669 = AC/DC Pre charging Circuit A5E00422670 = Discharge and Earth Fault Detection A5E00422672 = Discharge and Earth Fault Detection A5E00122720 = DC Link Discharge and Earth Fault Detection 1012617 = Blower Circuit 1010736 = Auxiliary Circuit A5E00299514 = Traction Control Unit T3 = System Voltage Monitoring Z1 = SIBAS Filter Power Supply B1 = Air Inlet Temperature R31.1,R31.2,R32.1,R32.2 = AC/DC Pre charging Circuit R42 = Discharge and Earth Fault Detection R41 = Discharge and Earth Fault Detection C75 = DC Link Discharge and Earth Fault Detection K92, K95 = Blower Circuit K51-K53 = Auxiliary Circuit A100 = Traction Control Unit C71 = DC Link Circuit Signup and view all the answers

Flashcards

Traction Converter Cubicle

A fully assembled unit located in the motor coach's high-voltage compartment, housing the traction control unit (TCU).

TCU

Traction Control Unit, responsible for controlling and monitoring the functions of the traction converter.

Nominal input voltage

The standard operating voltage of the traction converter, typically 2 x 950 V AC, 50 Hz or 1500 V DC.

Input voltage range (AC)

Acceptable voltage range for AC operation, from 627 V to 1083 V which corresponds to a line voltage of 16.5 to 28.5 kV.