HW2 MDT, Monday, Sep. - Electrical, Computer & Energy...
Transcript of HW2 MDT, Monday, Sep. - Electrical, Computer & Energy...
ECEN 5017 Lecture 6CU‐Boulder Announcements
• HW2 due 9am MDT, Monday, Sep. 16– Submit a single, easily readable pdf file, including all relevant analytical and simulation results via D2L
– Submit simulation files as requested, but do not assume the grader will run your simulations to generate the results
– Late work will receive no credit– Collaboration is encouraged; use the blog
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Please disregard USU‐specific announcements in lectures recorded by Prof. Zane at USU
Review• Transportation electrification: EV, HEV, PHEV, …• Vehicle dynamics: fundamental limits, power and energy requirements, component requirements
Today• Design validation via system simulation• Component requirement and system performance analysis via drive cycle simulation
• Vehicle controller design: small‐signal analysisNext week• Continue vehicle controller design (for EV)• Introduce hybrid EV architectures
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Review acceleration example
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ExampleMv = 1500 kgCd = 0.26Cr = 0.01Av = 2.16 m2
x = 4 (vb = 25 MPH)rw = 0.3 m
Battery: 10 kWh
fvrfvdfba
vrequiredv gvMCvACvv
tMP 322
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21
hp 99kW 74requiredvP
s 10atAcc. performance spec: 0‐60 mph in
Energy Required
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Simulation model setup
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kWh156.0
kW3.562
hp 99kW 74s10
m/s826MPH 60
2
max
max
avavg
a
bvvvavg
v
a
f
tPEtvMPP
Pt
.vAcceleration parameters
Sim Setup
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Drive Train Model
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ElectricMotor Transmission
wheels(radius rw)
ne
Te
nvTv
Fv v
3-phaseInverter
DC-DCConverter
BatteryPack
BatteryCharger
Electric Drive
Pbatt PDC
IaIb
Ic
Simulation results: 100% efficiency
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0
5000
10000
For
ce [
N]
Drive Force
Resistive Force
0 5 10 150
200
400
Cur
rent
[A
]
Inverter input current
Battery current
0 5 10 15-500
0
500
time [sec]
Mot
or c
urre
nts
[A]
0 5 10 150
1000
2000
Tor
que
[Nm
]
Motor torque
Wheel torque
Simulation results: 100% efficiency
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0
50
100
Spe
ed [
mph
]
Reference Speed
EV Speed
0
50
100
X: 8.592Y: 74
Inst
. P
ower
[kW
]
Tractive Power,
Battery Power
0 5 10 150
0.1
0.2
X: 8.597Y: 0.1501
Bat
tery
Ene
rgy
[kW
h]
0 5 10 1598
99
100
Bat
tery
SO
C [
%]
time [sec]
Simulation results: 81% efficiency
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0
50
100
Spe
ed [
mph
]
Reference SpeedEV Speed
0
50
100
X: 8.594Y: 90.81
Inst
. P
ower
[kW
]
Tractive Power,Battery Power
0 5 10 150
0.2
0.4
X: 8.595Y: 0.1848
Bat
tery
Ene
rgy
[kW
h]
0 5 10 1596
98
100
Bat
tery
SO
C [
%]
time [sec]
US06 Drive Cycle Simulation
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US06 simulation results
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-5000
0
5000
10000
For
ce [
N]
Drive Force
Resistive Force
0 100 200 300 400 500 600-200
0
200
400
Cur
rent
[A
]
Inverter input current
Battery current
0 100 200 300 400 500 600-500
0
500
time [sec]
Mot
or c
urre
nts
[A]
0 100 200 300 400 500 600-2000
0
2000
Tor
que
[Nm
]
Motor torque
Wheel torque
US06 simulation results
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0
50
100
Spe
ed [
mph
]
Reference Speed
EV Speed
-50
0
50
100
Inst
. P
ower
[kW
]
Tractive Power,
Battery Power
0 100 200 300 400 500 6000
1
2
Bat
tery
Ene
rgy
[kW
h]
0 100 200 300 400 500 60080
90
100
Bat
tery
SO
C [
%]
time [sec]
US06: with Pe_max = 30 kW
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0
50
100
Spe
ed [
mph
]
Reference Speed
EV Speed
-50
0
50
Inst
. P
ower
[kW
]
Tractive Power,
Battery Power
0 100 200 300 400 500 6000
1
2
Bat
tery
Ene
rgy
[kW
h]
0 100 200 300 400 500 60080
90
100
Bat
tery
SO
C [
%]
time [sec]
Vehicle controller design
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Basic open‐loop model
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Simplified closed‐loop model
Vehicle dynamics small‐signal model
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2
21 vACgMCgzMF
dtdvM vdvrvvv
Loop gain analysis
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