DC/AC 3-Phase Inverter (PSpice Model)
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Transcript of DC/AC 3-Phase Inverter (PSpice Model)
DC/AC Inverter (3-Phase) Simplified SPICE Behavioral Model
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 1
Contents
1. Model Overview
2. Benefit of the Model
3. Concept of the Model
4. 3-Phase DC/AC Specification (Example)
5. Parameter Settings
6. Input-Output Characteristics6.1 Simulation Circuit and Setting
7. Line-to-Line Output Characteristics7.1 Simulation Circuit and Setting
8. Efficiency Characteristics8.1 Simulation Circuit and Setting
9. Minimum DC Input Voltage9.1 Simulation Circuit and Setting
Simulation Index
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 2
1.Model Overview
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• This 3-Phase DC/AC Inverter Simplified SPICE Behavioral Model is for users who require the model of an Inverter as a part of their system.
• The model focuses on the input/output relationships of the Inverter block; therefore, it is not using high frequency models (e.g. oscillator and noise models), and is not based on the electronic topologies of the Inverter.
• The model enables long-term behavior simulation of the system (e.g. in a Photovoltaic system simulation).
2.Benefit of the Model
• Enable Transient Simulation.
• Can be adjusted to your own 3-Phase DC/AC specifications, by editing the
model parameters.
• The simplified model is an easy-to-use, which can be provided without the
circuit detail.
• Time and costs are saved because only the necessary parts are simulated.
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 4
3.Concept of the Model
The model is characterized by parameters n, Vin_min, Vin_max, Vo_ac and Freq that represent the input-output-relationships of the Inverter. Where,
PAC : AC output powerPDC : DC input power
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3-Phase DC/AC Inverter Simplified SPICE Behavioral Model
IN+
IN-
U
N
VIN,MIN~VIN,MAX (Vdc)
IIN IO~
~
V
W
DC
AC
P
PnEfficiency )(
ININ IV
IV OO
)(3POUT(3-phase)
4.DC/AC Specification (Example)
3-Phase DC/AC Inverter with •VIN = 24~250Vdc, •VO, LN = 100VAC, •POUT(3-phase) = 1500W,•and Efficiency = 80%
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3-Phase DC/AC InverterEfficiency (n) = 80%
Operating Input Voltage:VIN,MIN=24 ~ VIN,MAX =250(Vdc)
IN+
IN-
U
N
V
W
~ POUT(3-phase)
IO~IIN
5.Parameter Settings (Example)VIN_MIN DC minimum input voltage• 0 < VIN_MIN < VIN_MAX• Value = 24V
VIN_MAX DC maximum input voltage• VIN_MAX > VIN_MIN• Value = 250V
VO_AC AC Output Voltage, rms value• e.g. 100V, 220V• Value = 100V
FREQ AC Output Frequency• e.g. 50Hz, 60Hz• Value = 50Hz
N Efficiency in 100%• 0 < N < 1• Value = 0.8 (80% Efficiency)
• From the inverter specification, the model is characterized by setting parameters VIN_MIN, VIN_MAX, VO_AC, FREQ, and N.
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U 1D C -A C _ I N V E R TE R
V I N _ M I N = 2 4
V O _ A C = 1 0 0V I N _ M A X = 2 5 0
F R E Q = 5 0N = 0 . 8
I N +
I N -
U
V
W
N
Time
0s 20ms 40ms 60ms 80ms 100msI(RU) I(RV) I(RW)
-10A
0A
10AV(U) V(V) V(W)
-200V
0V
200V
SEL>>
1 V(VIN) 2 I(in)0V
50V
100V
150V
200V
250V
300V1
0A
10A
15A
20A
25A
30A2
>>
6.Input-Output Characteristics
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3-Phase AC Output Voltage: VO, LN
DC Input Current
DC Input Voltage
3-Phase AC Output Current
6.1 Simulation Circuit and Setting
*Analysis directives: .TRAN 0 100ms 0 10us .PROBE V(*) I(*) W(*) D(*) NOISE(*)
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 9
v in
0
in
U 1D C -A C _ I N V E R TE R
V I N _ M I N = 2 4
V O _ A C = 1 0 0V I N _ M A X = 2 5 0
F R E Q = 5 0N = 0 . 8
I N +
I N -
U
V
W
N
V
U
R U{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}W
R W{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
PARAMETERS:P L O A D = 1 5 0 0
R V{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
0
V 12 5 0 V
Time
0s 20ms 40ms 60ms 80ms 100msI(RU) I(RV) I(RW)
-10A
0A
10A
SEL>>
V(U,V) V(V,W)-300V
0V
300V1 V(vin) 2 I(in)
0V
50V
100V
150V
200V
250V
300V1
0A
10A
15A
20A
25A
30A2
>>
7.Line-to-Line Output Characteristics
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Line-to-Line Output Current
Line-to-Line Output Voltage
DC Input Voltage
DC Input Current
7.1 Simulation Circuit and Setting
*Analysis directives: .TRAN 0 100ms 0 10us .PROBE V(*) I(*) W(*) D(*) NOISE(*)
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 11
v in
0
in
U 1D C -A C _ I N V E R TE R
V I N _ M I N = 2 4
V O _ A C = 1 0 0V I N _ M A X = 2 5 0
F R E Q = 5 0N = 0 . 8
I N +
I N -
U
V
W
N
V
U
R U{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}W
R W{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
PARAMETERS:P L O A D = 1 5 0 0
R V{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
0
V 12 5 0 V
Time
10s 20s 30s 40s 50s(3*(RMS(V(U))*RMS(I(RU))))/(V(vin)*I(in))*100
0
10
20
30
40
50
60
70
80
90
100
(50.000,80.004)
8.Efficiency Characteristics
Output and efficiency of the Inverter on time domain analysis.Efficiency(n) = PAC/PDC
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N = 0.8
8.1 Simulation Circuit and Setting
*Analysis directives: .TRAN 0 50s 0 1ms .PROBE V(*) I(*) W(*) D(*) NOISE(*)
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 13
v in
0
in
U 1D C -A C _ I N V E R TE R
V I N _ M I N = 2 4
V O _ A C = 1 0 0V I N _ M A X = 2 5 0
F R E Q = 5 0N = 0 . 8
I N +
I N -
U
V
W
N
V
U
R U{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}W
R W{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
PARAMETERS:P L O A D = 1 5 0 0
R V{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
0
V 12 5 0 V
Time
0s 50ms 100ms 150ms 200ms 250msV(U) V(V) V(W)
-200V
-100V
0V
100V
200V1 V(VIN) 2 I(in)
0V
50V
100V
150V
200V
250V1
0A
5A
10A
15A
20A
25A2
SEL>>SEL>>
(250.000m,250.000)
(24.000m,24.000)
9.Minimum DC Input Voltage
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VO(AC) disable as VIN < VIN ,MIN
3-Phase AC Output Voltage
DC Input Voltage
DC Input Current
9.1 Simulation Circuit and Setting
*Analysis directives: .TRAN 0 250ms 0 10us .PROBE V(*) I(*) W(*) D(*) NOISE(*)
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 15
v in
0
in
U 1D C -A C _ I N V E R TE R
V I N _ M I N = 2 4
V O _ A C = 1 0 0V I N _ M A X = 2 5 0
F R E Q = 5 0N = 0 . 8
I N +
I N -
U
V
W
N
V
U
R U{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}W
R W{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
PARAMETERS:P L O A D = 1 5 0 0
R V{P W R (1 0 0 , 2 )/ (P L O A D / 3 )}
0
V 1
T1 = 0
T2 = 2 5 0 m sV 1 = 0
V 2 = 2 5 0 V
Simulation Index
All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 16
Simulations Folder name
1. Input-Output Characteristics.............................................
2. Line-to-Line Output Characteristics..................................
3. Efficiency Characteristics.................................................
4. Minimum DC Input
Voltage...............................................
VO_LN
VO_LL
Efficiency
VIN_MIN