Traction Motor Technical Details
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Questions and Answers

How many traction motors are provided in one motor coach?

  • Two
  • Six
  • Eight
  • Four (correct)

What is the type designation of the traction motor?

  • 1TB2022-0TA04
  • 1TB2022-0TA02
  • 1TB2022-0TA03 (correct)
  • 1TB2022-0TA01

What is the flux density in the air gap of the traction motor?

  • 1.0 T
  • 0.6 T
  • 0.8 T (correct)
  • 0.5 T

What is the maximum motor speed when the wheel is fully worn?

<p>3452 rpm (C)</p> Signup and view all the answers

What is the thermal class of the traction motor?

<p>200 (C)</p> Signup and view all the answers

What is the specific electric loading of the traction motor?

<p>476 A/cm (A)</p> Signup and view all the answers

What is the diameter of the stator bore?

<p>325 mm (A)</p> Signup and view all the answers

How many poles does the traction motor have?

<p>6 (D)</p> Signup and view all the answers

What type of connection is used for the traction motor?

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

What is the maximum torque for a new wheel of the traction motor?

<p>2903 Nm (B)</p> Signup and view all the answers

What is the torque specified for both DC and AC modes?

<p>1147 Nm (C)</p> Signup and view all the answers

What is the maximum starting current of a new wheel?

<p>276 A (C)</p> Signup and view all the answers

Which material is used for the gear wheel and pinion?

<p>17rNiMo6 (C)</p> Signup and view all the answers

What is the power factor during continuous operation?

<p>0.79 (B)</p> Signup and view all the answers

What type of bearing is used for the NDE motor bearing?

<p>Deep Groove Ball Bearing (D)</p> Signup and view all the answers

Which oil is recommended for the motor NDE bearing?

<p>Shell Retinax LX2 (A)</p> Signup and view all the answers

What is the refilling quantity of gear oil in liters?

<p>2.5 liters (B)</p> Signup and view all the answers

What is the rated frequency for the one hour operation?

<p>101.5 Hz (C)</p> Signup and view all the answers

Which component has a maintenance checklist that includes stator resistance?

<p>Motor (D)</p> Signup and view all the answers

What is the gear ratio specified for the system?

<p>5.71 (B)</p> Signup and view all the answers

What is the flux density in the rotor yoke of the traction motor?

<p>0.75 T (A)</p> Signup and view all the answers

What is the air gap measurement specified for the traction motor?

<p>1.5 mm (C)</p> Signup and view all the answers

What is the maximum rating for motor speed when the wheel is fully worn?

<p>3452 rpm (A)</p> Signup and view all the answers

What is the diameter of the rotor in the traction motor?

<p>322 mm (C)</p> Signup and view all the answers

What is the thermal class rating of the traction motor?

<p>200 (B)</p> Signup and view all the answers

What type of connection is employed in the traction motor?

<p>Star (C)</p> Signup and view all the answers

What is the specific air ventilation rate for the traction motor?

<p>0.25 m2/s (C)</p> Signup and view all the answers

What is the continuous operation rating for current in the AC-DC EMU?

<p>200 A (A)</p> Signup and view all the answers

Which power output can be achieved according to the two-minute rating?

<p>300 kW (A)</p> Signup and view all the answers

What is the efficiency percentage during DC mode operation?

<p>95% (C)</p> Signup and view all the answers

What is the initial quantity of gear oil required for the motor according to the manual?

<p>2.8 liters (D)</p> Signup and view all the answers

Which type of bearing is used for the motor's DE bearing?

<p>Cylindrical-Roller Bearing (B)</p> Signup and view all the answers

What is the make of the gear and pinion used in the system?

<p>Flender (C)</p> Signup and view all the answers

What is the one-hour voltage rating for the AC-DC EMU motor?

<p>993 V (A)</p> Signup and view all the answers

What is the type of lubrication used for the NDE bearing?

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

What is the refilling quantity of oil for the motor's NDE bearing?

<p>26 g/Bearing (C)</p> Signup and view all the answers

What is the power factor specified for the continuous operation of the motor?

<p>0.79 (A)</p> Signup and view all the answers

What is the air gap specified for the traction motor?

<p>1.5 mm (B)</p> Signup and view all the answers

What is the mechanical air ventilation rate for the traction motor?

<p>0.25 m2/s (B)</p> Signup and view all the answers

What is the torque specified for continuous operation of the AC-DC EMU motor?

<p>1147 Nm (B)</p> Signup and view all the answers

What is the efficiency percentage during continuous operation of the AC-DC EMU motor?

<p>94 % (C)</p> Signup and view all the answers

What is the maximum starting current of a half-worn wheel?

<p>267A (D)</p> Signup and view all the answers

What type of lubrication is used for the DE bearings?

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

What is the continuous operation voltage rating for the AC-DC EMU motor?

<p>932 V (A)</p> Signup and view all the answers

What is the required insulation resistance during commissioning?

<p>10 MΩ (D)</p> Signup and view all the answers

Which component does the maintenance checklist include regarding resistance?

<p>Stator Resistance (D)</p> Signup and view all the answers

What is the frequency rating during continuous operation?

<p>101.5 Hz (C)</p> Signup and view all the answers

What type of bearing is specified for the NDE in the motor?

<p>Deep Groove Ball Bearing (D)</p> Signup and view all the answers

Flashcards

Traction Motor

The primary electric motor responsible for propelling the train.

Number of Traction Motors

Each motor coach in the EMU is equipped with four traction motors.

PWM Inverters

The traction motors are connected to PWM inverters, which control the speed and direction of the motors.

Type Designation

The type designation uniquely identifies the traction motor.

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Number of Poles

The number of poles in the motor determines its magnetic field and rotational speed.

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Specific Electric Loading

Specific electric loading measures the current density within the motor.

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Flux Density in Air Gap

The strength of the magnetic field in the air gap between the stator and rotor.

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Flux Density in Stator Yoke

The strength of the magnetic field in the stationary part of the motor.

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Flux Density in Rotor Yoke

The strength of the magnetic field in the rotating part of the motor.

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Thermal Class

The maximum temperature the motor can withstand before damage.

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Gear Ratio

Ratio of teeth on the gear wheel to the teeth on the pinion, determining the speed reduction between the motor and wheels.

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DC Mode Power

The power output of the traction motor in DC mode, measured as 1147 Nm of torque with a fundamental motor current of 167 A, a power factor of 0.81, and an efficiency of 95%.

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AC Mode Power

The power output of the traction motor in AC mode, measured as 1147 Nm of torque with a fundamental motor current of 150 A, a power factor of 0.79, and an efficiency of 95%.

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Continuous Operation Rating

The maximum allowable voltage, current, and power the motor can handle continuously without overheating. It is used for normal operating conditions.

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One Hour Rating

The maximum allowable voltage, current, and power the motor can handle for a specific duration (one hour). It is used for short periods of high-demand operation.

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Two Minute Rating

The maximum allowable voltage, current, and power the motor can handle for a very short duration (two minutes). It is used for extremely high-demand situations.

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Maximum Starting Current (New Wheel)

The current drawn by the traction motor when accelerating from 0 to 950 RPM over 14 seconds, with a new wheel set. This current is higher due to the lower rolling resistance.

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Maximum Starting Current (Half Worn Wheel)

The current drawn by the traction motor when accelerating from 0 to 950 RPM over 14 seconds, with a half-worn wheel set.

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Drive End Bearing (DE)

A specific type of bearing used for the traction motor's drive end, featuring cylindrical rollers for high load capacity and low friction.

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Non-Drive End Bearing (NDE)

A specific type of bearing used for the traction motor's non-drive end, featuring a deep groove ball design for general applications and low maintenance.

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How many traction motors are in a motor coach?

Each motor coach in the EMU has four traction motors that power the train.

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What controls the traction motors?

The traction motors are connected to PWM inverters that control their speed and direction.

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What is the type designation of the traction motor?

The traction motor model is 1TB2022-0TA03, made by Siemens.

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How many poles does the traction motor have?

The motor has six poles, which determine its magnetic field and speed.

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What is the specific electric loading of the traction motor?

The specific electric loading measures the current density within the motor, which is 476 A/cm.

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What type of connection does the traction motor have?

The traction motor has a connection type of "star", meaning the three phases are connected in a Y-shape.

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What is the maximum motor speed?

The maximum motor speed when the wheels are fully worn is 3452 RPM.

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What is the maximum torque of the traction motor?

The maximum torque the motor can produce with a new wheel is 2903 Nm.

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What is the air gap of the traction motor?

The traction motor has a specific air gap of 1.5 mm between the stator and rotor.

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How is the traction motor cooled?

The traction motor is air-cooled, with a ventilation rate of 0.25 m2/s. This helps keep the motor cool during operation.

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Max Starting Current (New Wheel)

The current drawn by the traction motor when accelerating from 0 to 950 RPM in 14 seconds, with a brand new set of wheels. It's higher due to lower rolling resistance.

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Max Starting Current (Half Worn Wheel)

The current drawn by the traction motor when accelerating from 0 to 950 RPM in 14 seconds, with half-worn wheels. This current is lower than the new wheel scenario due to increased rolling resistance.

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What controls traction motors?

The traction motors are connected to PWM inverters, controlling their speed and direction.

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Who makes the traction motors?

Siemens

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What do the poles do?

The traction motor has six poles, determining its magnetic field and speed.

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What is the air gap?

The traction motor has a specific air gap of 1.5 mm between the stator and rotor.

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Material of Pinion and Gearwheel

The type of material used for the pinion and gear wheel, providing strength and durability.

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Material of Gear Case

The type of material used for the gear case, which encloses the gears and protects them.

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Gear Type

A specific type of gear used in the traction motor system, designed for high torque and efficiency.

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Gear Oil

The type of oil used to lubricate the gear system, ensuring smooth operation and reducing wear.

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Stator Resistance

The level of resistance measured in the stator winding, indicating the health of the motor.

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Study Notes

Traction Motor Technical Details

  • Four traction motors per motor coach
  • Two pairs connected to different PWM inverters

Type Designation

  • 1TB2022-0TA03

Electrical Data

  • Manufacturer: Siemens
  • Number of Poles: 6
  • Specific Electric Loading: 476 A/cm2
  • Air Gap Flux Density: 0.8 T
  • Stator Yoke Flux Density: 1.0 T
  • Rotor Yoke Flux Density: 0.75 T
  • Thermal Class: 200
  • Connection: Star
  • Supply Cable: 1 x 35 mm2 per phase

Mechanical Data

  • Air gap: 1.5 mm
  • Air ventilation: 0.25 m2/s
  • Stator bore diameter: 325 mm
  • Rotor diameter: 322 mm
  • Core length: 350 mm

Maximum Ratings

  • Maximum Motor Speed (fully worn wheel): 3452 rpm
  • Maximum Torque (new wheel): 2903 Nm
  • Maximum Power (at tractive effort curve): 84 kW

Ratings

  • DC-Mode: Voltage 932 V, Current 200 A, Power 240 kW, Power Factor 0.81, Frequency 101.5 Hz, Speed 2000 rpm, Torque 1147 Nm, Efficiency 95%
  • AC-Mode: Voltage 993 V, Current 211 A, Power 270 kW, Power Factor 0.79, Frequency 101.5 Hz, Speed 2000 rpm, Torque 1290 Nm, Efficiency 93.5%
  • Two Minute Rating: Voltage 1043 V, Current 223 A, Power 300 kW, Power Factor 0.79, Frequency 101.5 Hz, Speed 2000 rpm, Torque 1434 Nm, Efficiency 93.5%

Maximum Starting Current

  • New wheel: 276 A
  • Half worn wheel: 267 A

Gear Ratio

  • 5.71 (97 teeth gear wheel / 17 teeth pinion)

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Related Documents

AC-DC EMU Maintenance Manual PDF

Description

Explore the technical specifications of traction motors used in motor coaches, including electrical and mechanical data, maximum ratings, and gear ratio. This quiz will help you understand the essential aspects of traction motor design and efficiency.

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