ecen5017 5 cu boulder announcementsecee.colorado.edu/~ecen5017/lectures/cu/l5_slides.pdfecen5017...
TRANSCRIPT
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ECEN5017 Lecture 5CU‐Boulder Announcements
• HW1 due 9am MDT, Monday, Sep. 9– Submit a single, easily readable pdf file via D2L– Late work will receive no credit– Collaboration is encouraged; use blog
• Short tutorial on MATLAB/Simulink posted on the CAETE site with other recorded lectures
• HW2 will include Simulink model simulations
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Please disregard USU‐specific announcements in lectures recorded by Prof. Zane at USU
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Today• Consider impact of vehicle component efficiency• Develop component & system simulation models
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EV drivetrain components
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ElectricMotor Transmission
wheels(radius rw)
ne
TenvTv
Fv v
3-phaseInverter
DC-DCConverter
BatteryPack
BatteryCharger
Electric Drive
Pbatt PDCIaIbIc
Tv: Torque at the wheelnv: wheel rotational speed [rpm]rw = rv: Wheel radius
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Parameter Review
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v: vehicle velocity (speed)Fv: Vehicle tractive forceTv: Torque at the wheelnv: wheel rotational speed [rpm]ωv: wheel angular speed [rad/sec]Pv: Vehicle tractive power
Mv: vehicle massrw = rv: Wheel radiusCr: Rolling resistance coefficientCd: Aerodynamic drag coefficientAv: Vehicle front areaair density
Vehicle / wheel level parameters
gratio: gear ratione: motor rotational speed [rpm]ωe: motor angular speed [rad/sec]Te: motor/engine torque [Nm]Ke: Torque constantPe_max: Maximum motor powerTe_max: Maximum motor torquevb: Base speed, torque/power limit boundaryx: motor speed factor, ratio vmax / vbta: time spec to accelerate to speed vfm: motor efficiency
Motor / engine parameters
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Component Efficiency
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ElectricMotor Transmission
wheels(radius rw)
ne
TenvTv
Fv v
3-phaseInverter
DC-DCConverter
BatteryPack
BatteryCharger
Electric Drive
Pbatt PDCIaIbIc
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Electric Motor Efficiency
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Electric Motor Efficiency
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Evaluation of 2004 Toyota Prius Hybrid Electric Drive System(2005 report by Oak Ridge National Lab)
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Drive Cycle Force and Speed Requirements
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DC‐DC Converter Efficiency
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Evaluation of 2004 Toyota Prius Hybrid Electric Drive System(2005 report by Oak Ridge National Lab)
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EV Simulation Models
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Driver Dynamics
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Simulink Plant Implementation
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Resistive Force Model
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Drive Train Model
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ElectricMotor Transmission
wheels(radius rw)
ne
TenvTv
Fv v
3-phaseInverter
DC-DCConverter
BatteryPack
BatteryCharger
Electric Drive
Pbatt PDCIaIbIc
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Battery Model
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DC‐DC Converter Model
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DC‐DC Functional Model
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Motor Drive Inverter
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Inverter Functional Model
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Motor Model
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Engine Torque/Power Limits
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Gear Ratio and Tire
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Initialization File
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Drive Train Model
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ElectricMotor Transmission
wheels(radius rw)
ne
TenvTv
Fv v
3-phaseInverter
DC-DCConverter
BatteryPack
BatteryCharger
Electric Drive
Pbatt PDCIaIbIc