ecen5017 5 cu boulder announcementsecee.colorado.edu/~ecen5017/lectures/cu/l5_slides.pdfecen5017...

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ECEN5017 Lecture 5 CUBoulder 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 1 Please disregard USUspecific announcements in lectures recorded by Prof. Zane at USU

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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

    1

    Please disregard USU‐specific announcements in lectures recorded by Prof. Zane at USU

  • Today• Consider impact of vehicle component efficiency• Develop component & system simulation models

    2

  • EV drivetrain components

    3

    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

  • Parameter Review

    4

    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

  • Component Efficiency

    5

    ElectricMotor Transmission

    wheels(radius rw)

    ne

    TenvTv

    Fv v

    3-phaseInverter

    DC-DCConverter

    BatteryPack

    BatteryCharger

    Electric Drive

    Pbatt PDCIaIbIc

  • Electric Motor Efficiency

    6

  • Electric Motor Efficiency

    7

    Evaluation of 2004 Toyota Prius Hybrid Electric Drive System(2005 report by Oak Ridge National Lab)

  • 8

    Drive Cycle Force and Speed Requirements

  • DC‐DC Converter Efficiency

    9

    Evaluation of 2004 Toyota Prius Hybrid Electric Drive System(2005 report by Oak Ridge National Lab)

  • EV Simulation Models

    10

  • Driver Dynamics

    11

  • Simulink Plant Implementation

    12

  • Resistive Force Model

    13

  • Drive Train Model

    14

    ElectricMotor Transmission

    wheels(radius rw)

    ne

    TenvTv

    Fv v

    3-phaseInverter

    DC-DCConverter

    BatteryPack

    BatteryCharger

    Electric Drive

    Pbatt PDCIaIbIc

  • Battery Model

    15

  • DC‐DC Converter Model

    16

  • DC‐DC Functional Model

    17

  • Motor Drive Inverter

    18

  • Inverter Functional Model

    19

  • Motor Model

    20

  • Engine Torque/Power Limits

    21

  • Gear Ratio and Tire

    22

  • 23

    Initialization File

  • Drive Train Model

    24

    ElectricMotor Transmission

    wheels(radius rw)

    ne

    TenvTv

    Fv v

    3-phaseInverter

    DC-DCConverter

    BatteryPack

    BatteryCharger

    Electric Drive

    Pbatt PDCIaIbIc