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L7 LTspice IV

DC/ AC Inverter (3-Phase)
Simplified SPICE Behavioral Model
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Contents 7::  §§. .§

.  Model Overview

Benefit of the Model

Concept of the Model

.  3-Phase DC/ AC Specification (...
Ur

1.ModeI Overview 7‘iT§§. §

- This 3-Phase DC/ AC Inverter Simplified SPICE Behavioral Model is for

users who require ...
2.Benefit of the Model » ‘3§9§§. .%

' Enable Transient Simulation. 

- Can be adjusted to your own 3-Phase DC/ AC specifica...
3.Concept of the Model -, %c!3.. ..§. .€

: lAlj>
3-Phase DC/ AC Inverter
vlNMm~vm MAX Simplified SPICE Behavioral Model
I ...
4.DC/ AC Specification (Example) ‘«r~'§§. §

Operating Input
V°”a9e?  3-Phase DC/ AC Inverter

V| N,MIN=24 '' Eff - =  800
...
5.Parameter Settings (Example)

| N+ U

V
W
IN- N

vin_min=24 vin_max=250
vo_ac=100 freq=50 n=0.8

VIN_MlN — DC minimum in...
8 measure

8
§'Z’

—lIlA

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6.Input-Output Characteristics ‘«r~'§§. §

III

30A
-—25A
-20A

.  . .  . .  . .  . .  . . ...
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6.1 Simulation Circuit and Setting 7t«r. ... ... ... ..

     
     
  
 

U1 . PARAM PLOAD=1500W
DC-AC INVERTER

V...
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7.Line-to-Line Output Characteristics '«'r~'§§. §

III

30A
-—25A
-20A

.  . .  . .  . .  . .  . . ...
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7.1 Simulation Circuit and Setting 7t«€m. ... ... ..

     
     
  
 

U1 . PARAM PLOAD=1500W
DC-AC INVERTER

V

R...
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8.Efficiency Characteristics -«rt~%§. .§

20A 3 I I ‘
N 0-8 3 Hold the cm key and left click to I ,  , I
E Calculate ...
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8.1 Simulation Circuit and Setting 7t«r. ... ... ... ..

     
     
  
 

U1 . PARAM PLOAD=1500W
DC-AC INVERTER

V...
9.Minimum DC Input Voltage ‘3§9§§. .§

 

Input Current

3«Phase AC Output Voltage

 

 

I
Ums 50ms 15Ums 2UUms 25Cms

V0...
9.1 Simulation Circuit and Setting '3§C'§§»§

 
    
 
  
  
  
     

vin
U1 . PARAM PLOAD=1500W
DC-AC_lNVERTER

RU
{PWR(...
Library Files and Symbol Files Location -: ~§<~e. -ass

    
   
   
   
  
   
   
   
     

I / '1|Ii . _  _r, ‘ I7 / I...
Simulation Index -3§{~%§. .§

Simulations Folder name
1. lnput—Output Characteristics . ... ... ... ... ... ... ... ... .....
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3-Phase inverter LTspice Model

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3-Phase inverter LTspice Model

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3-Phase inverter LTspice Model

  1. 1. sir '5:€ . i5.§. .§ L7 LTspice IV DC/ AC Inverter (3-Phase) Simplified SPICE Behavioral Model
  2. 2. slr Contents 7:: §§. .§ . Model Overview Benefit of the Model Concept of the Model . 3-Phase DC/ AC Specification (Example) . Parameter Settings . Input-Output Characteristics 6.1 Simulation Circuit and Setting . Line-to-Line Output Characteristics 7.1 Simulation Circuit and Setting 8. Efficiency Characteristics 8.1 Simulation Circuit and Setting 9. Minimum DC Input Voltage 9.1 Simulation Circuit and Setting Library Files and Symbol Files Location Simulation Index I ou<. n.r>_c. >g>—x
  3. 3. Ur 1.ModeI Overview 7‘iT§§. § - 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).
  4. 4. 2.Benefit of the Model » ‘3§9§§. .% ' 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.
  5. 5. 3.Concept of the Model -, %c!3.. ..§. .€ : lAlj> 3-Phase DC/ AC Inverter vlNMm~vm MAX Simplified SPICE Behavioral Model I I , ,_ _ P. -I(‘ (VdC) E_/ _‘f1czency(n) = PDC‘ _ 3 - (V0 - I0) VIN ° [IN 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 power PM : DC input power
  6. 6. 4.DC/ AC Specification (Example) ‘«r~'§§. § Operating Input V°”a9e? 3-Phase DC/ AC Inverter V| N,MIN=24 '' Eff - = 800 VINMAX =250(/ dc) Ic/ ency (n) A IN- 3-Phase DC/ AC Inverter with ~V, N = 24~250Vdc, ~VO_ LN = IOOVAC, . POUT(3-phase) = 1500‘/ V! and Efficiency = 80%
  7. 7. 5.Parameter Settings (Example) | N+ U V W IN- N vin_min=24 vin_max=250 vo_ac=100 freq=50 n=0.8 VIN_MlN — DC minimum input voltage 0 < V| N_M| N < V| N_MAX Value = 24V VIN_MAX — DC maximum input voltage V| N_MAX > V| N_M| N Value = 250V VO_AC — AC Output Voltage, rms value eg 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) VIN_M| N, VIN_MAX, VO_AC, FREQ, and N. :34 Bee Ig recnnoiogios From the inverter specification, the model is characterized by setting parameters
  8. 8. 8 measure 8 §'Z’ —lIlA «Ir 6.Input-Output Characteristics ‘«r~'§§. § III 30A -—25A -20A . . . . . . . . . . . . . . . . . . . . . . . . DC Input Current —1E| A . ” . . . . . . . . . . . . . . . . . . . . . . . .5 . . . . . . . . . . . . . . . . . . . . . . . . . .' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A I I DA DC lnpul Voltage ‘. ij-. - / (w) 3-Phase AC Oulput Voltage: V0 U, _. I JV _/ __- Ii '—. '-. - I l Rw) 1” r; , r/5 / j. // 3-Phase AC Output Current / . i 1 Ums 2|Jms 4Dms Eflms 8Ums 1|Ims
  9. 9. W Bee 6.1 Simulation Circuit and Setting 7t«r. ... ... ... .. U1 . PARAM PLOAD=1500W DC-AC INVERTER V RU {PWR(100,2)I(PLOADI3)} {PWR( 00,2)/ (PLOADl3)} _ _ _ o0,2)I(P OADI3)} vin_min=24 vin_max=250 vo_ac=100 freq=50 n=0.8 V . LlB dc-ac_inverter. lib . TRAN 0 100ms 0 10us *Analysis directives: .TRAN 0 100ms O 10us
  10. 10. ' HA In I irnw) «Ir 7.Line-to-Line Output Characteristics '«'r~'§§. § III 30A -—25A -20A . . . . . . . . . . . . . . . . . . . . . . . . DC Input Current —1E| A . . . . . . . . . . . . . . . . . . . . . . . . 5A I I DA DC Input Voltage mEG§El88 8 Line-to-Line Output Voltage r“ V_ / "~ _ I" Line-to-Line Output Current :1 ~ ; / ; / V / .‘ ‘V -IZlA ; Ums 2|Jms 4Dms Eflms 8Ums 1|Ims 1
  11. 11. W Bee 7.1 Simulation Circuit and Setting 7t«€m. ... ... .. U1 . PARAM PLOAD=1500W DC-AC INVERTER V RU {PWR(100,2)I(PLOADI3)} {PWR( 00,2)/ (PLOADI3)} _ _ _ o0,2)I(P OADI3)} vin_min=24 vin_max=250 vo_ac=100 freq=50 n=0.8 V . LlB dc-ac_inverter. lib . TRAN 0 100ms 0 10us *Analysis directives: .TRAN 0 100ms O 10us
  12. 12. sir 8.Efficiency Characteristics -«rt~%§. .§ 20A 3 I I ‘ N 0-8 3 Hold the cm key and left click to I , , I E Calculate RMS value of l(Ru) ‘ . ‘,hw, '"m_ [mm Interval Star! " 103 Interval End: 503 Average. ES. [E3nA Fl M S“ 4 9993A 10s 155 205 25s 309 355 405 455 50s Output and efficiency of the Inverter on time domain analysis. Efficiency(n) = PAC/ PDC X Efficiency = (3"V¢, ..5 ‘I, My/ V,. ,"l . ,)”100. where the outputvoltage (V: ,_'(‘. ')) is the 'nverter spec and the output current (NC. W3) is read from the simulation result.
  13. 13. W Bee 8.1 Simulation Circuit and Setting 7t«r. ... ... ... .. U1 . PARAM PLOAD=1500W DC-AC INVERTER V RU {PWR(100,2)I(PLOADI3)} {PWR( 00,2)/ (PLOADI3)} _ _ _ o0,2)I(P OADI3)} vin_min=24 vin_max=250 vo_ac=100 freq=50 n=0.8 V . LlB dc-ac_inverter. lib . tran 0 50s 0 10ms *Analysis directives: .TRAN 0 50s 0 10ms
  14. 14. 9.Minimum DC Input Voltage ‘3§9§§. .§ Input Current 3«Phase AC Output Voltage I Ums 50ms 15Ums 2UUms 25Cms V0,“, disable as l/ ,,, < V, ” . ,.. _.
  15. 15. 9.1 Simulation Circuit and Setting '3§C'§§»§ vin U1 . PARAM PLOAD=1500W DC-AC_lNVERTER RU {PWR(100,2)l(PLOADI'3)} {PWR( 00,2)/ (PLOADI3)} {PWR( 00,2)I(P 0ADl3)} EV‘ PWL(0 O 250ms 250V) :7 vin_min=24 vin_max=250 vo_ac=100 freq=50 n=0.8 Y|7.LlB dc-ac_inverter. lib . TRAN 0 250ms 0 10us *Analysis directives: . TRAN 0 250ms O 10u
  16. 16. Library Files and Symbol Files Location -: ~§<~e. -ass I / '1|Ii . _ _r, ‘ I7 / Il1!n'. ‘~ , _ L_JI_ J File Edit. View Favorites Tools Help , v File Edit View Favorites Tools Help _IC: 'tProgramFi| es'tLTC'tLT$piceIV| ib1sLb v »_« Go m, ,,ioc; ic v ‘L-Go ' - ' . |I: i " Ad b A bat1.0Do nt EIcBaFc1l_ein/ erter I g I - 0 c cro cum: 2 KB -' I DC-AC_A8M_SimpI ‘ied. pdF . - File Folder I "viii . _ ; File Edit. View Favorites Tools Help / I Simulation 4 CIIPIOQV/ Sm Fi| e5i, LTC_LTspiizetvtlibtsym V - _ l 60 ‘/ LIB File LTspice Symbol D DC-AC__INVERTER. asy Microsoft Omce PowerPoint 91-2003 Presentation J J DC-AC_ABM_Simpl‘ied. pcIt dc~ac_inverter. ‘ib D DC~AC_INl/ ERTER . asy 2) Copy LIB files from CD to C: Program Fi| esLTCLTspiceIWibsub 3) Copy LTspice symbols files from CD to C: Program Fi| esLTCLTspicelVIibsym
  17. 17. Simulation Index -3§{~%§. .§ Simulations Folder name 1. lnput—Output Characteristics . ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. VO_LN 2. Line-to-Line Output Characteristics . ... ... ... ... ... ... ... ... ... ... . . . VO_LL 3. Efficiency Characteristics . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . . . Efficiency 4. Minimum DC Input V| N_M| N Voltage . ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. . .

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