Traction Converter Cubicle Overview
57 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Where is the traction converter cubicle installed?

The traction converter cubicle is installed in the HT compartment of the motor coach.

What is the nominal input voltage of the traction converter cubicle?

2 x 950 V AC, 50 Hz / 1500V DC

What is the range of the input voltage in AC mode?

627 V-1083 V AC

What is the range of input frequency in AC mode?

<p>46Hz - 54 Hz</p> Signup and view all the answers

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

<p>AC Mode 1800 V, DC Mode 1500 V</p> Signup and view all the answers

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

<p>~Approx. unity</p> Signup and view all the answers

Which component is situated inside the cabinet of the traction converter cubicle?

<p>The traction control unit (TCU)</p> Signup and view all the answers

What is the name of the traction control unit (TCU) in these traction converters?

<p>SIBAS® 32S</p> Signup and view all the answers

What type of voltage system does the traction converter operate on?

<p>Dual voltage system - 1500V DC or 950V, 1ph, 50Hz AC (25KV AC line)</p> Signup and view all the answers

What are the main components of the traction converter?

<p>Two four-quadrant choppers, one DC link, two PWM Inverters, DC link capacitors, contactors, transducers, blowers etc.</p> Signup and view all the answers

What are the functional sections of the traction converter in AC Mode?

<p>Four-quadrant chopper (A), Input and pre-charging (B), Pulse width modulated inverter &amp; Braking chopper (C), Capacitive earth-fault registration (D), DC link circuit (E)</p> Signup and view all the answers

What is the purpose of the pre-charging unit in the input section of the traction converter?

<p>To prevent high inrush current when the main contactor is closed and charge the DC link capacitor before the main power is switched on.</p> Signup and view all the answers

What is the function of the four-quadrant chopper module (4QC) in the traction converter?

<p>To transform the input voltage (single-phase AC) into a controlled direct voltage for the DC link circuit.</p> Signup and view all the answers

The four-quadrant chopper module allows for operation in only two quadrants.

<p>False (B)</p> Signup and view all the answers

What type of switches are used in the four-quadrant chopper module?

<p>IGBTs (Insulated Gate Bipolar Transistors)</p> Signup and view all the answers

The pulse width modulated inverter works by switching the IGBTs with a high clock frequency.

<p>True (A)</p> Signup and view all the answers

The output voltage of the PWM inverter can be reduced by changing the clocking frequency.

<p>True (A)</p> Signup and view all the answers

How does the PWM inverter adjust the phase between the voltage and current during braking?

<p>The PWM inverter adjusts the phase between the voltage and current to create a phase shift that opposes the direction of rotation, effectively providing braking torque.</p> Signup and view all the answers

What is the purpose of the protection resistors connected to the brake chopper?

<p>The protection resistors are meant to protect the brake chopper from serious faults and fires. They discharge the DC link during a fault, preventing damage to the converter.</p> Signup and view all the answers

What type of phase module is used in the brake chopper?

<p>SIBAC® BB SP 1500 FL</p> Signup and view all the answers

What is the capacity of the DC link circuit in this traction converter?

<p>12 mF - 0% + 10%</p> Signup and view all the answers

What is the inductance of the line reactor in this traction converter?

<p>6 mH - 0% to +10%</p> Signup and view all the answers

What is the control voltage range for the brake chopper?

<p>110 V DC</p> Signup and view all the answers

What is the maximum operating current of the brake chopper at nominal voltage?

<p>77 V to 137.5 V DC, 10 Amp.</p> Signup and view all the answers

What is the continuous power demand of the brake chopper?

<p>Approx. 6.2 kW</p> Signup and view all the answers

What is the continuous rating of the input power per 4QC in the traction converter?

<p>620 kW</p> Signup and view all the answers

What is the short time rating of the input power per 4QC in the traction converter?

<p>720 kW</p> Signup and view all the answers

What is the continuous rating of the output power per PWMI in the traction converter?

<p>535 kW</p> Signup and view all the answers

What is the short time rating of the output power per PWMI in the traction converter?

<p>630 kW</p> Signup and view all the answers

What is the continuous rating of the output current per PWMI in AC mode?

<p>322 A</p> Signup and view all the answers

What is the short time rating of the output current per PWMI in AC mode?

<p>371 A</p> Signup and view all the answers

What is the continuous rating of the output voltage (L-L) in AC mode?

<p>1217 V</p> Signup and view all the answers

What is the short time rating of the output voltage (L-L) in AC mode?

<p>1217 V</p> Signup and view all the answers

What is the inductance of the line reactor?

<p>6 mH 0% to +10%</p> Signup and view all the answers

What is the air flow required for the traction converter?

<p>1.9 m³/s (0.95 m³/s per blower)</p> Signup and view all the answers

What is the forced ventilation method used in the traction converter cabinet?

<p>The Traction Converter Cabinet is a forced air-cooled system.</p> Signup and view all the answers

What is the type number and description of the IGBT module used in the 4 quadrant choppers?

<p>SP1500FL - IGBT Module - Single Parallel</p> Signup and view all the answers

What is the type number and description of the IGBT module used in the PWM inverters?

<p>SD1500FL - IGBT Module - Double Choke</p> Signup and view all the answers

What is the type number and description of the line filter used in the traction converter?

<p>4PK9904-7AB - Line Filter Choke</p> Signup and view all the answers

What is the type number and description of the line contactor used for the DC main line?

<p>LTHS-1250-2P - Line Contactor DC</p> Signup and view all the answers

What is the type number and description of the pre-charging contactor used for the DC pre-charging circuit?

<p>LTC-250-2P - Pre-charging Contactor DC</p> Signup and view all the answers

What is the type number and description of the main blower used in the traction converter?

<p>2CS7-410-1RG11-0KK3 - Main Blower</p> Signup and view all the answers

What is the type number and description of the auxiliary blower used in the traction converter?

<p>148DH9LM 18230 - Auxiliary Blower</p> Signup and view all the answers

What is the type number and description of the DC link capacitor used in the traction converter?

<p>DCMKP 2.2/3mF or E56.M45-305680 - DC Link Capacitor</p> Signup and view all the answers

What is the type number and description of the DC/DC power supply used in the traction converter?

<p>P354.1-IGBT - DC/DC Power Supply</p> Signup and view all the answers

What is the type number and description of the current transducers used in the traction converter?

<p>CS1000BRVE or LTC600-SFC-SPxx - Current Transducers</p> Signup and view all the answers

What is the type number and description of the voltage transducers used in the traction converter?

<p>A5E00303286 - Voltage Transducers</p> Signup and view all the answers

What is the type number and description of the intermediate transformer used in the traction converter?

<p>TV 1164 (CT) - Intermediate Transformer Current</p> Signup and view all the answers

What is the type number and description of the intermediate voltage transformer used in the traction converter?

<p>TV 1162 (VT) - Intermediate Transformer Voltage</p> Signup and view all the answers

What is the type number and description of the temperature sensor used in the traction converter?

<p>31138210 - Temperature Sensor - Air Inlet</p> Signup and view all the answers

What is the type number and description of the pre-charging resistor used in the traction converter?

<p>PVR900T or GBS 60/370 60R +/-5% - Pre-charging Resistor</p> Signup and view all the answers

What is the type number and description of the discharge resistor used in the traction converter?

<p>PVR160 or GWS 300 SB 33K +/-5% - Discharge Resistor DC Link</p> Signup and view all the answers

What is the type number and description of the grounding capacitor used in the traction converter?

<p>B25835-S2224-K057 - Grounding Capacitor</p> Signup and view all the answers

What is the type number and description of the contactors for the blower circuit in the traction converter?

<p>3RT10172K F420LA0 - Contactors for Blower Circuit</p> Signup and view all the answers

What is the type number and description of the auxiliary contactors used in the traction converter?

<p>3RH11222K F400LA0 - Auxiliary Contactors</p> Signup and view all the answers

What is the type number and description of the SIBAS 32S unit used in the traction converter?

<p>6FH4742-1A - SIBAS 32 S</p> Signup and view all the answers

What is the type number and description of the EMC capacitor used in the traction converter?

<p>343434 - EMC capacitor</p> Signup and view all the answers

Flashcards

Traction Converter Cubicle (TCC)

A fully assembled unit located in the high-voltage compartment of the motor coach, containing the Traction Control Unit (TCU) and associated components.

Nominal Input Voltage (TCC)

The standard voltage supplied to the traction converter cubicle, typically 2 x 950 V AC, 50Hz or 1500V DC.

Input Voltage Range (AC Mode)

The acceptable range of input voltage in alternating current mode, spanning from 627 V to 1083 V AC, corresponding to a line voltage of 16.5 to 28.5 kV.

Input Frequency Range (AC Mode)

The acceptable range of input frequency in alternating current mode, between 46Hz and 54 Hz.

Signup and view all the flashcards

Input Voltage Range (DC Mode)

The acceptable range of input voltage in direct current mode, between 800 V and 1800 V DC.

Signup and view all the flashcards

Nominal DC Link Circuit Voltage

The standard voltage level of the DC link circuit, which connects the four-quadrant chopper to the inverters.

Signup and view all the flashcards

Power Factor

A measure of how efficiently electrical power is being used, close to unity (ideal) for the traction converter.

Signup and view all the flashcards

Dual Voltage System

The ability of the traction converter to operate with both 1500V DC or 950V, 1 ph, 50Hz AC (25KV AC line) input.

Signup and view all the flashcards

Four-Quadrant Chopper

A device that converts the input voltage into a controlled DC voltage for the DC link circuit, allowing for both driving and braking operation.

Signup and view all the flashcards

Pulse Width Modulated (PWM) Inverter

A device that converts DC voltage from the DC link circuit to AC voltage for the traction motors, using precise switching to control the output.

Signup and view all the flashcards

Brake Chopper

A device that controls the flow of DC current during braking, helping to slow down the train.

Signup and view all the flashcards

Pre-Charging Unit

A component that slowly charges the DC link capacitor before the main contactor is closed, preventing large inrush currents.

Signup and view all the flashcards

IGBT (Insulated Gate Bipolar Transistor)

A type of semiconductor switch used in the four-quadrant chopper and PWM inverter, known for high speed and efficiency.

Signup and view all the flashcards

SIBAS 32S

Siemens’ advanced train control unit, responsible for monitoring and controlling the traction converter.

Signup and view all the flashcards

Capacitive Earth-Fault Registration

A system that detects and records faults in the DC link circuit.

Signup and view all the flashcards

DC Link Circuit

The electrical connection between the four-quadrant chopper and the PWM inverters, carrying the controlled DC voltage.

Signup and view all the flashcards

Line Reactor

An inductor used to filter out noise and harmonics in the DC link circuit.

Signup and view all the flashcards

Control Voltage Range

The range of DC voltage required for controlling the functions of the traction converter.

Signup and view all the flashcards

Continuous Power Demand

The average amount of power required to keep the traction converter running continuously.

Signup and view all the flashcards

Short Time Rating

The maximum power that the traction converter can handle for a short period of time, typically 2 minutes.

Signup and view all the flashcards

Forced Ventilation

The use of fans to circulate air and cool the components inside the traction converter cabinet.

Signup and view all the flashcards

Main Blower

A large fan responsible for cooling the core components of the traction converter.

Signup and view all the flashcards

Auxiliary Blower

Smaller fans responsible for cooling specific components or areas within the traction converter cabinet.

Signup and view all the flashcards

Pre-charging Resistor

A resistor used to limit the current during the pre-charging of the DC link capacitor.

Signup and view all the flashcards

Discharge Resistor

A resistor used to safely discharge the DC link capacitor in case of an earth fault or system shutdown.

Signup and view all the flashcards

Grounding Capacitor

A capacitor used to detect and limit earth faults in the DC link circuit.

Signup and view all the flashcards

Contactors

Electrical switches that open and close circuits, used to control the flow of power to the traction converter.

Signup and view all the flashcards

EMC (Electromagnetic Compatibility) Capacitor

A capacitor used to reduce electromagnetic interference (EMI) generated by the traction converter.

Signup and view all the flashcards

Study Notes

Traction Converter Cubicle

  • The traction converter cubicle is a complete unit housed in the motor coach's high-tension compartment
  • It contains the traction control unit (TCU)
  • Nominal input voltage: 2 x 950 V AC, 50 Hz / 1500 V DC
  • Input voltage range (AC mode): 627 V - 1,083 V AC, related to line voltage of 16.5-28.5 kV
  • Input frequency range (AC mode): 46 Hz - 54 Hz
  • Input voltage range (DC mode): 800 V - 1800 V DC
  • Nominal DC link circuit voltage: AC Mode 1800 V, DC Mode 1500 V
  • Power factor (AC at various loads and line voltages): Approximately unity

Electrical System

  • The traction converter system uses a dual voltage (1500V DC or 950V 1ph, 50Hz AC)
  • It includes two four-quadrant choppers, a DC link, and two PWM inverters that each power two traction motors
  • Additional components: DC link capacitors, contactors, transducers, and blowers
  • Controlled and monitored by a Siemens Traction control unit (TCU) SIBAS® 32S

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

This quiz explores the components and functionality of the traction converter cubicle used in motor coaches. Participants will learn about nominal input voltages, system configurations, and essential electrical principles involved. Test your understanding of this crucial aspect of traction systems!

More Like This

Traction Converter Cubicle Overview
60 questions
Traction Converter Cubicle Overview
12 questions
Traction Converter Cubicle Overview
43 questions
Traction Converter Cubicle Overview
16 questions
Use Quizgecko on...
Browser
Browser