dc/ac 3-phase inverter (pspice model)
DESCRIPTION
DC/AC 3-Phase Inverter (PSpice Model) Simplified SPICE Behavioral Model Bee Technologies Inc.TRANSCRIPT
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
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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.
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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
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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