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Questions and Answers
Where is the traction converter cubicle installed?
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?
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?
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?
What is the range of input frequency in AC mode?
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What is the nominal DC link circuit voltage during traction operation?
What is the nominal DC link circuit voltage during traction operation?
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What is the power factor in AC at different loads and line voltages?
What is the power factor in AC at different loads and line voltages?
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Which component is situated inside the cabinet of the traction converter cubicle?
Which component is situated inside the cabinet of the traction converter cubicle?
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What is the name of the traction control unit (TCU) in these traction converters?
What is the name of the traction control unit (TCU) in these traction converters?
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What type of voltage system does the traction converter operate on?
What type of voltage system does the traction converter operate on?
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What are the main components of the traction converter?
What are the main components of the traction converter?
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What are the functional sections of the traction converter in AC Mode?
What are the functional sections of the traction converter in AC Mode?
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What is the purpose of the pre-charging unit in the input section of the traction converter?
What is the purpose of the pre-charging unit in the input section of the traction converter?
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What is the function of the four-quadrant chopper module (4QC) in the traction converter?
What is the function of the four-quadrant chopper module (4QC) in the traction converter?
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The four-quadrant chopper module allows for operation in only two quadrants.
The four-quadrant chopper module allows for operation in only two quadrants.
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What type of switches are used in the four-quadrant chopper module?
What type of switches are used in the four-quadrant chopper module?
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The pulse width modulated inverter works by switching the IGBTs with a high clock frequency.
The pulse width modulated inverter works by switching the IGBTs with a high clock frequency.
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The output voltage of the PWM inverter can be reduced by changing the clocking frequency.
The output voltage of the PWM inverter can be reduced by changing the clocking frequency.
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How does the PWM inverter adjust the phase between the voltage and current during braking?
How does the PWM inverter adjust the phase between the voltage and current during braking?
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What is the purpose of the protection resistors connected to the brake chopper?
What is the purpose of the protection resistors connected to the brake chopper?
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What type of phase module is used in the brake chopper?
What type of phase module is used in the brake chopper?
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What is the capacity of the DC link circuit in this traction converter?
What is the capacity of the DC link circuit in this traction converter?
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What is the inductance of the line reactor in this traction converter?
What is the inductance of the line reactor in this traction converter?
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What is the control voltage range for the brake chopper?
What is the control voltage range for the brake chopper?
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What is the maximum operating current of the brake chopper at nominal voltage?
What is the maximum operating current of the brake chopper at nominal voltage?
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What is the continuous power demand of the brake chopper?
What is the continuous power demand of the brake chopper?
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What is the continuous rating of the input power per 4QC in the traction converter?
What is the continuous rating of the input power per 4QC in the traction converter?
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What is the short time rating of the input power per 4QC in the traction converter?
What is the short time rating of the input power per 4QC in the traction converter?
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What is the continuous rating of the output power per PWMI in the traction converter?
What is the continuous rating of the output power per PWMI in the traction converter?
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What is the short time rating of the output power per PWMI in the traction converter?
What is the short time rating of the output power per PWMI in the traction converter?
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What is the continuous rating of the output current per PWMI in AC mode?
What is the continuous rating of the output current per PWMI in AC mode?
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What is the short time rating of the output current per PWMI in AC mode?
What is the short time rating of the output current per PWMI in AC mode?
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What is the continuous rating of the output voltage (L-L) in AC mode?
What is the continuous rating of the output voltage (L-L) in AC mode?
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What is the short time rating of the output voltage (L-L) in AC mode?
What is the short time rating of the output voltage (L-L) in AC mode?
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What is the inductance of the line reactor?
What is the inductance of the line reactor?
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What is the air flow required for the traction converter?
What is the air flow required for the traction converter?
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What is the forced ventilation method used in the traction converter cabinet?
What is the forced ventilation method used in the traction converter cabinet?
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What is the type number and description of the IGBT module used in the 4 quadrant choppers?
What is the type number and description of the IGBT module used in the 4 quadrant choppers?
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What is the type number and description of the IGBT module used in the PWM inverters?
What is the type number and description of the IGBT module used in the PWM inverters?
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What is the type number and description of the line filter used in the traction converter?
What is the type number and description of the line filter used in the traction converter?
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What is the type number and description of the line contactor used for the DC main line?
What is the type number and description of the line contactor used for the DC main line?
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What is the type number and description of the pre-charging contactor used for the DC pre-charging circuit?
What is the type number and description of the pre-charging contactor used for the DC pre-charging circuit?
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What is the type number and description of the main blower used in the traction converter?
What is the type number and description of the main blower used in the traction converter?
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What is the type number and description of the auxiliary blower used in the traction converter?
What is the type number and description of the auxiliary blower used in the traction converter?
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What is the type number and description of the DC link capacitor used in the traction converter?
What is the type number and description of the DC link capacitor used in the traction converter?
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What is the type number and description of the DC/DC power supply used in the traction converter?
What is the type number and description of the DC/DC power supply used in the traction converter?
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What is the type number and description of the current transducers used in the traction converter?
What is the type number and description of the current transducers used in the traction converter?
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What is the type number and description of the voltage transducers used in the traction converter?
What is the type number and description of the voltage transducers used in the traction converter?
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What is the type number and description of the intermediate transformer used in the traction converter?
What is the type number and description of the intermediate transformer used in the traction converter?
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What is the type number and description of the intermediate voltage transformer used in the traction converter?
What is the type number and description of the intermediate voltage transformer used in the traction converter?
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What is the type number and description of the temperature sensor used in the traction converter?
What is the type number and description of the temperature sensor used in the traction converter?
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What is the type number and description of the pre-charging resistor used in the traction converter?
What is the type number and description of the pre-charging resistor used in the traction converter?
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What is the type number and description of the discharge resistor used in the traction converter?
What is the type number and description of the discharge resistor used in the traction converter?
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What is the type number and description of the grounding capacitor used in the traction converter?
What is the type number and description of the grounding capacitor used in the traction converter?
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What is the type number and description of the contactors for the blower circuit in the traction converter?
What is the type number and description of the contactors for the blower circuit in the traction converter?
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What is the type number and description of the auxiliary contactors used in the traction converter?
What is the type number and description of the auxiliary contactors used in the traction converter?
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What is the type number and description of the SIBAS 32S unit used in the traction converter?
What is the type number and description of the SIBAS 32S unit used in the traction converter?
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What is the type number and description of the EMC capacitor used in the traction converter?
What is the type number and description of the EMC capacitor used in the traction converter?
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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 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
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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!
