Electric Motor Configuration for ChallengeX

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Electric Motor Configuration for ChallengeX
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Members

• Faculty Advisor
• Dr. Marshall Molen
• Team Members
• Michael Robertson Craig Ross Dustin Ott
  Jeff Smith
• (Team leader)
• Hardware, testing, Website, simulation
  Hardware, testing, Hardware, testing,
• and research and research
  and research and
  research

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Motivation

• To have a better understanding of the
  manufacturing process.
• Gain real world experience by working with a
  major corporation such as GM.

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Overview

• Hybrid Vehicles are built to increase gas
  mileage, decrease greenhouse gasses, and decrease
  dependence on fossil fuels.
• Purpose of the electric motor is to provide an
  alternate source of power.
• Another purpose of the electric motor is to
  provide regeneration to the batteries.

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Problem

• Finding a motor configuration to power the front
  half of the drivetrain and regenerate the battery
  packs.

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Solution

• Simulate three types of motor configurations with
  PSAT to find the best configuration for our
  purpose.
• 2 AC induction motors one powers drivetrain and
  one regenerates batteries
• 1 AC induction motor and 1 DC permanent magnet
  motor AC induction motor powers drivetrain and
  DC permanent magnet motor regenerates batteries
• 1 AC induction motor powers drivetrain and
  regenerates batteries

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Design Constraints

• Operating speed 3600 rpms.
• Weight lt 800 lbs
• Size approximately 19 long x 12 wide
• Horsepower 100 hp 10
• Overall Efficiency 75 with load
• Regenerate during coasting and braking

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Simulation ResultsTorque
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Simulation ResultsSpeed
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Other Details
AC ind 2x AC ind AC ind DC perm
Total weight of motors 240 lb 262.1 lb 661.4 lb
Energy loss in motors 490.18 Wh 1294.83 Wh 819.4 Wh
Braking energy recuperated 81.19 80.88 80.25
Avg. motor efficiency 82.92 84.10 84.09
Relative fuel consumption (gallons) 3.88 8.16 1.00
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Best Configuration Chosen

• 1 AC Induction motor configuration chosen
• Smaller size and weight
• 10 hp permanent magnet motor is as large as 100
  hp Induction motor
• Cost of one motor is less than two motors
• Interconnections are simpler

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Present and Future Work

• Currently researching different components that
  will make our configuration function efficiently
  such as
• Step up transformer
• Voltage Inverter
• Speed controller
• We will then test the actual motor under load
  conditions once the components are purchased and
  assembled.

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Summary

• Design a motor configuration for the ChallengeX
  competition.
• Construct a reliable system which will
• Power the drivetrain efficiently.
• Regenerate batteries during coasting and braking.
• 1 AC motor configuration chosen

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Acknowledgement

• Dr. Marshall Molen
• Philip Conley

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Questions??