plecs for solar applications
TRANSCRIPT
electrical engineering software
PLECS for Solar Energy Applications
Outline
Introduction to PLECS
Conventional Standalone PV System Overview
Photovoltaic Panel Modeling
Single Phase Inverter with Partial Shading Maximum power-point tracking
DC/DC controls
DC/AC controls
SVPWM Control of a Grid-Connected Three-Level NPC Inverter Hardware-in-the-Loop
Embedded Code Generation
2
PLECS - Multi Domain System Level Simulation
3
Conventional Standalone Photovoltaic Conversion System
4
Controller
DC/DCControl DC/ACControl
PVMeas.
DC/DCMeas. DC/ACMeas.
GridMeas.
Filter
DC/DC DC/AC TransformerGrid-sideFilter
GridBulkCapacitance
PVPanels
Photovoltaic Panel Modeling
Production is a function of insolation, voltage, and temperature.
Equation and lookup-table based approaches common
5
M. G. Villalva, J. R. Gazoli and E. R. Filho, "Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays," in IEEE Transactions on Power Electronics, vol. 24, no. 5, pp. 1198-1208, May 2009, doi: 10.1109/TPEL.2009.2013862. D. J. Schnberger, "Modeling of a photovoltaic string using PLECS", 2009, [online]
I = Ipv(G) + I0 exp ( V + RsIVta ) − 1 −
V + RsIRp
Ipv Rp
Rs +
-
AIdV
Photovoltaic Panel Modeling
Production is a function of insolation, voltage, and temperature.
Equation and lookup-table based approaches common
6
M. G. Villalva, J. R. Gazoli and E. R. Filho, "Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays," in IEEE Transactions on Power Electronics, vol. 24, no. 5, pp. 1198-1208, May 2009, doi: 10.1109/TPEL.2009.2013862.
Ipv Rp
Rs +
-
AIdV
0.221 Ω
415 Ω
8.214 A
9.8e-8 A
1.3867 V
1.3
I = Ipv(G) + I0 exp ( V + RsIVta ) − 1 −
V + RsIRp
Rs
Rp
Ipv
I0
Vt = NskT/q
a
Single-Phase PV Inverter with Partial Shading
7
C_busV
A
V
25
Temperature A
Sun
V
DC/DCController
iv
siL
DC/ACController
Swa+Swa-
Swb+v_bus
Swb- i_gridv_grid
v_bus*
Sys
Enab
le
V_bus_desired
V_bus
V_bus
A
i_L
i_L
SysEnable
SysEnable
SysEnable
i_grid
v_grid
TG
TG
TG
Hardware-in-the-Loop and Embedded Code Generation Demo
8
En
DigitalIn
Power
enPowerstageProtection
rst
Measurementstransformation
Ig_dqVg_dq
Vg
Ig
ω
Icap
Icap_dqsincos_phi 3-levelSVPWM
Vdc
Vαβ* sw3L
Vmid
Id_ref
Id*
0
Iq*
d-axiscontroller
Vinv_d*
ω
Ig_dqId*
Vg_dq
q-axiscontroller
Vinv_q*ω
Ig_dq
Iq*
Vg_dq
+−
PWM
ADC
PWMADC1
Task
ADC
ADC2
Task
ADC
Scope
ADC3
Task
ADC
ControlTaskTrigger
z-1
NOT LEDBlinking
DigitalOut
Demux_ADC
dqαβ
K
Virtualdampingresistor
PLECS RT Box
TI 28379D LaunchpadBreakout
Scope
Vdc Ig
V Vdc
V Vmid
Vmid Vg
Vg
Ig
Qu1
Qu2
Qu3
Qu4
Qv1
Qv2
Qv3
Qv4
Qw1
Qw2
Qw3
Qw4
Qu1Qu2
Qu3Qu4
Qv1Qv2
Qv3Qv4
Qw1Qw2
Qw3Qw4
Ig
AnalogOut
Vdc
AnalogOut
Vmid
AnalogOut
Vg
AnalogOut
abcαβ
XYPlot Vmid
z-1
NOT LEDBlinking
DigitalOut
0Vdc
0Vmid
EnableswonMCU
DigitalOut
Enableswitching
DigitalIn
PowerstageEnabled
DigitalOut
Qu
PWMCapture
Qv
PWMCapture
Qw
PWMCapture
PV1
SunV_3ph
0
Powertothegrid
Probe -1
Icap
Icap
Icap
AnalogOut
ModelSettings
Power
DigitalIn NOT
LCLFilter
PLECS RT Box
TI 28379D LaunchPad
Plant
Controller
Hardware-in-the-Loop and Embedded Code Generation Demo
9
PLECS RT Box
TI 28379D LaunchpadBreakout
PLECS RT Box
TI 28379D LaunchPad
Plant
Controller
V Vgrid
Grid
V
Probe
PVV,I,P
Probe
Vac
Probe
Iac
PVstring
**
PvsV
PVC:1.5e-3v_init:388
L:2e-3
C:4.7e-6
L:3e-3
R:10
R:0.02 R:0.03
A25
Temp[0 50]ºC
Probe
PVV,I
ACOut
AnalogOut
DCOut
AnalogOut
Irradiance
s1s2
s3s4
PWM
PWMCapture
EnableswonMCU
DigitalOut
Enableslideswchannel:29
DigitalIn
Power
DigitalIn
Powerstageenabled(LED)
channel:29
DigitalOut z-1
NOT LEDBlinkingchannel:31
DigitalOut
NOT
s1
s2
s3
s4
A
Currentcontroller
err out
rst
+−−+
Voltagecontroller
I*err
rst
MPPcontroller
v*v,i
rst
PWM
ADC
PWM
ADC
Task
ADC
Unipolarduty
dV* Vdc
z-1
NOT LEDBlinking
DigitalOut
rst
En
DigitalIn
Power
enPowerstageProtection
rstrst
Probe
Scope
rst
MPPControlTask VoltageControlTask
LEDTask
Currentreference
Igrid*VgridI*
Vdc
VgridIgrid
Idc
Hardware In the Loop (HIL) - Detailed Structure
10
Converter Model （RT Box）
Ctrl Hardware （MCU）
ADC Ctrl algorithm PWM
Data bus Data busReal time
Analog Output
PWM Input
PWM Capture
CPU calculate model
DACPLECS RT Box
TI 28379D LaunchpadBreakout
electrical engineering software
Plexim GmbH
Technoparkstrasse 1 CH-8005 Zurich
Phone +41 44 533 51 00 Email [email protected] Web www.plexim.com
Plexim, Inc.
5 Upland Road, Suite 4 Cambridge, MA 02140
Phone +1 617 209 2121 Email [email protected] Web www.plexim.com