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Questions and Answers
What is the nominal input voltage for the traction converter cubicle in AC mode?
What is the nominal input voltage for the traction converter cubicle in AC mode?
2 x 950 V AC, 50 Hz
What is the nominal DC link circuit voltage during traction operation?
What is the nominal DC link circuit voltage during traction operation?
1800 V
The traction converter cubicle is installed in the HT compartment of the motor coach.
The traction converter cubicle is installed in the HT compartment of the motor coach.
True
What component inside the traction converter cubicle is responsible for controlling and monitoring the converter's functions?
What component inside the traction converter cubicle is responsible for controlling and monitoring the converter's functions?
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What is the main function of the four-quadrant chopper module (4QC)?
What is the main function of the four-quadrant chopper module (4QC)?
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Which of the following components are NOT part of the traction converter?
Which of the following components are NOT part of the traction converter?
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The traction converter works on a single voltage system of either 1500V DC or 950V, 1ph, 50Hz AC.
The traction converter works on a single voltage system of either 1500V DC or 950V, 1ph, 50Hz AC.
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What is the main purpose of the pre-charging resistor in the traction converter?
What is the main purpose of the pre-charging resistor in the traction converter?
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What is the purpose of the auxiliary blowers in the traction converter?
What is the purpose of the auxiliary blowers in the traction converter?
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What type of semiconductor is used in the Four Quadrant Chopper Module (4QC)?
What type of semiconductor is used in the Four Quadrant Chopper Module (4QC)?
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What is the typical pulse frequency of the Four Quadrant Chopper Module?
What is the typical pulse frequency of the Four Quadrant Chopper Module?
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Match the following components with their respective functions:
Match the following components with their respective functions:
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Study Notes
Traction Converter Cubicle
- The traction converter cubicle is a complete unit housed in the motor coach's high tension (HT) compartment
- The traction control unit (TCU) is inside the cubicle
- Nominal input voltage: 2 x 950 V AC, 50 Hz / 1500V DC
- AC input voltage range: 627 V - 1083 V, 16.5-28.5 kV line voltage
- AC input frequency range: 46 Hz - 54 Hz
- DC input voltage range: 800 V – 1800 V DC
- Nominal DC link circuit voltage: AC Mode 1800 V, DC Mode 1500 V
- Power factor in AC at different loads and line voltages: approximately unity
Electrical System
- The traction converter uses a dual voltage system (1500 V DC or 950 V, 1-phase, 50 Hz AC (25 kV AC line))
- It comprises two four-quadrant choppers, one DC link, and two PWM inverters
- Each inverter feeds two traction motors
- The traction converter includes DC link capacitors, contactors, transducers, blowers, etc.
- The Siemens Traction control unit (TCU) SIBAS® 32S controls and monitors the converter
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Description
Explore the components and specifications of the traction converter cubicle used in motor coaches. This quiz covers the input voltage ranges, electrical systems, and the functionality of key components like the traction control unit. Test your knowledge on the dual voltage systems and power factors involved.
