Micro Electric Urban Vehicle
Phase III
Students: Nathan Golick
Kevin Jaris
Advisors: Mr. Gutschlag
Dr. Anakwa
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Outline of Presentation
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Project Summary
Review of previous work
Functional Description
Block Diagrams
Functional Requirements
Performance Specifications
Equipment and parts list
Schedule of tasks to be completed
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Project Summary
• Create Simulink models for regenerative braking
subsystem.
• Use additional DC motor to simulate vehicle braking
dynamics.
• Use power electronics to recover energy provided by the
additional DC motor during the simulated braking
process.
• Investigate the option of implementing a variable speed
motor drive.
• If time permits integrate completed design on the
Miniature Electric Urban Vehicle (MEUV).
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Review of Previous Work:
Phase I
• Researched all components of a micro
electric vehicle.
• Created a drive model.
• Selected optimal components for a test
platform.
• Built a prototype MEUV.
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Phase I Final Design
• Motor
– D&D Separately Excited
Brushed DC
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Model: ES-10E-33
8 HP Continuous
6.7” Diameter
11” Length
56 lbs
7/8” x 2” Shaft
3/16” Keyway
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Phase I Final Design
• Controller
– Alltrax DCX600
• 24-48V Battery Input
• 600 Amp Limit for 2
minutes
• 30 Amp Field Winding
Limit
• Standby current: < 35mA
• Drives motor to 17 peak HP
• 18 kHz Operating
Frequency
• -25 C to 75 C Operating
Temperature
– 95 C shutdown
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Phase I Final Design
• Battery
• Three 12 Volt Lead Acid Batteries
• 44 Ah Capacity each
• Low Cost
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Phase I Final Design
•Single speed gear reduction drive
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Review of Previous Work:
Phase 2
• Create Simulink Models
– Battery
– DC Motor
– Controller
– Vehicle Dynamics
– Data Collection (minimal)
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Project Description
• Use an additional DC motor to drive the go-cart
motor and use power electronics to recover the
kinetic energy during braking simulations.
• Use a controlled voltage on the additional motor to
simulate various braking profiles applied to the gocart motor.
• Model regenerative braking subsystem in Simulink.
• Perform multiple simulations to verify the design.
• Investigate the possibility of using a variable speed
drive to recover energy at lower speeds.
• Integrate completed design with the Miniature
Electric Urban Vehicle (MEUV).
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System Block Diagram
DC Motor
Braking Motor Controller
(Voltage Profile)
Drive Shaft Coupling
Go-Kart Motor
Braking Power Electronics
Battery
Super Capacitors
(Optional)
Battery Charger
Brake Input
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Functional Requirements
• Brake pedal shall apply regenerative braking up
to approximately 75% displacement.
• Brake pedal shall apply hydraulic and
regenerative braking above 75% pedal
displacement.
• Power electronics shall optimize the recovery of
the available kinetic energy.
• Batteries and possibly super capacitors shall
store all energy recovered by the power
electronics.
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DC – DC Boost Converter
Boost Converter Schematics
Vo/Vi = 1/(1-D)
Boost Converter Idealized Equation
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Equipment List
Vehicle Platform
•Make: Vector Go Kart
•Model #: 4170
•Brakes: 7.5" hydraulic disc with parking brake
•Tires (Front): 16"x6"x8"
•Tires (Rear): 16"x7"x8"
•Dimensions: 72"L x 46"W x 49"H
•Wheel Base : 47.5"
•Seat to pedals: 33" to 37"
•Curb weight: 310lbs
•Max. Rider weight: 300lbs
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Equipment List
Batteries(3)
• Product ID: Interstate SLA1161
• Type: Sealed lead acid
• Voltage: 12V
• Capacity: 44 Ah
Controller
• Type: Alltrax DCX-600
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Equipment List
Motor (Go Kart)
• Type: D&D Separately Excited Brushed
24-48V DC Motor
• Model #: ES-10E-33
• Max power: 17HP
• Max speed: 3000RPM
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Equipment List
Braking Simulation Motor
•Type: Yet to be determined.
Voltage Profile Controller
•Yet to be determined.
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Schedule of Future Tasks
Date
Nate Golick
Kevin Jaris
Week 1
1/29/2013
Aquire additional motor
Simulate power electronics
Week 2
2/5/2013
Design pedal displacement system
Contruct power electronics
Week 3
2/12/2013
Create Simulink model of motor
Create voltage profile
Week 4
2/19/2013
Test power electronics with additional motor
Week 5
2/26/2013
Test power electronics with additional motor
Week 6
3/5/2013
Week 7
3/12/2013
Mount both motors onto test platform
Week 8
3/26/2013
Test regenerative braking system
Week 9
4/2/2013
Test regenerative braking system
Week 10
4/9/2013
Test regenerative braking system
Week 11
4/16/2013
Mount regenerative braking system to MUEV
Week 12
4/23/2013
Test regenerative braking system on MUEV
Week 13
4/30/2013
Test regenerative braking system on MUEV
Week 14
5/7/2013
Finalize report and presentation
Week 15
5/14/2013
Presentation
Remove go kart motor from MUEV
Create Simulink model of regenerative braking
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Questions?
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