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DC/AC Inverter (3-Phase)  Simplified SPICE Behavioral Model All Rights Reserved Copyright (C) Bee Technologies Corporation...
Contents <ul><li>Model Overview </li></ul><ul><li>Benefit of the Model </li></ul><ul><li>Concept of the Model </li></ul><u...
1.Model Overview <ul><li>This 3-Phase  DC/AC Inverter Simplified SPICE Behavioral Model  is for users who require the mode...
2.Benefit of the Model <ul><li>Enable Transient Simulation. </li></ul><ul><li>Can be adjusted to your own 3-Phase DC/AC sp...
3.Concept of the Model <ul><li>The model is characterized by parameters n, Vin_min, Vin_max, Vo_ac and Freq that represent...
4.DC/AC Specification (Example) <ul><li>3-Phase DC/AC Inverter with  </li></ul><ul><li>V IN  = 24~250Vdc,  </li></ul><ul><...
5.Parameter Settings (Example) <ul><li>VIN_MIN     DC minimum input voltage </li></ul><ul><li>0 < VIN_MIN < VIN_MAX </li>...
6.Input-Output Characteristics All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 3-Phase AC Output Volta...
6.1 Simulation Circuit and Setting <ul><li>*Analysis directives:  </li></ul><ul><li>.TRAN  0 100ms 0 10us  </li></ul>All R...
7.Line-to-Line Output Characteristics All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 Line-to-Line Out...
7.1 Simulation Circuit and Setting <ul><li>*Analysis directives:  </li></ul><ul><li>.TRAN  0 100ms 0 10us  </li></ul>All R...
8.Efficiency Characteristics <ul><li>Output and efficiency of the Inverter on time domain analysis. </li></ul><ul><ul><ul>...
8.1 Simulation Circuit and Setting <ul><li>*Analysis directives:  </li></ul><ul><li>.TRAN  0 50s 0 10ms  </li></ul>All Rig...
9.Minimum DC Input Voltage All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 V O(AC)  disable as V IN  <...
9.1 Simulation Circuit and Setting <ul><li>*Analysis directives:  </li></ul><ul><li>.TRAN  0 250ms 0 10u  </li></ul>All Ri...
Library Files and Symbol Files Location <ul><li>Copy LIB files from CD to C:Program FilesLTCLTspiceIVlibsub </li></ul><ul>...
Simulation Index All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 Simulations Folder name <ul><li>Input...
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DC/AC 3-Phase Inverter (LTspice Model)

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DC/AC 3-Phase Inverter (LTspice Model)
Simplified SPICE Behavioral Model
Bee Technologies Inc.

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DC/AC 3-Phase Inverter (LTspice Model)

  1. 1. DC/AC Inverter (3-Phase) Simplified SPICE Behavioral Model All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  2. 2. Contents <ul><li>Model Overview </li></ul><ul><li>Benefit of the Model </li></ul><ul><li>Concept of the Model </li></ul><ul><li>3-Phase DC/AC Specification (Example) </li></ul><ul><li>Parameter Settings </li></ul><ul><li>Input-Output Characteristics </li></ul><ul><ul><li>6.1 Simulation Circuit and Setting </li></ul></ul><ul><li>Line-to-Line Output Characteristics </li></ul><ul><ul><li>7.1 Simulation Circuit and Setting </li></ul></ul><ul><li>Efficiency Characteristics </li></ul><ul><ul><li>8.1 Simulation Circuit and Setting </li></ul></ul><ul><li>Minimum DC Input Voltage </li></ul><ul><ul><li>9.1 Simulation Circuit and Setting </li></ul></ul><ul><ul><li>Library Files and Symbol Files Location </li></ul></ul><ul><ul><li>Simulation Index </li></ul></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  3. 3. 1.Model Overview <ul><li>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. </li></ul><ul><li>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. </li></ul><ul><li>The model enables long-term behavior simulation of the system (e.g. in a Photovoltaic system simulation). </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  4. 4. 2.Benefit of the Model <ul><li>Enable Transient Simulation. </li></ul><ul><li>Can be adjusted to your own 3-Phase DC/AC specifications, by editing the model parameters. </li></ul><ul><li>The simplified model is an easy-to-use, which can be provided without the circuit detail. </li></ul><ul><li>Time and costs are saved because only the necessary parts are simulated. </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  5. 5. 3.Concept of the Model <ul><li>The model is characterized by parameters n, Vin_min, Vin_max, Vo_ac and Freq that represent the input-output-relationships of the Inverter. </li></ul><ul><li>Where, </li></ul><ul><li>P AC : AC output power </li></ul><ul><li>P DC : DC input power </li></ul><ul><li>3-Phase DC/AC Inverter Simplified SPICE Behavioral Model </li></ul><ul><ul><li> </li></ul></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 IN+ IN- U N V IN,MIN ~V IN,MAX (Vdc) I IN I O ~ ~ V W P OUT( 3-phase)
  6. 6. 4.DC/AC Specification (Example) <ul><li>3-Phase DC/AC Inverter with </li></ul><ul><li>V IN = 24~250Vdc, </li></ul><ul><li>V O, LN = 100V AC , </li></ul><ul><li>P OUT(3-phase) = 1500W, </li></ul><ul><li>and Efficiency = 80% </li></ul><ul><li>3-Phase DC/AC Inverter </li></ul><ul><li>Efficiency ( n ) = 80% </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 Operating Input Voltage: V IN,MIN =24 ~ V IN,MAX =250(Vdc) IN+ IN- ~ P OUT( 3-phase) I O ~ I IN U N V W
  7. 7. 5.Parameter Settings (Example) <ul><li>VIN_MIN  DC minimum input voltage </li></ul><ul><li>0 < VIN_MIN < VIN_MAX </li></ul><ul><li>Value = 24V </li></ul><ul><li>VIN_MAX  DC maximum input voltage </li></ul><ul><li>VIN_MAX > VIN_MIN </li></ul><ul><li>Value = 250V </li></ul><ul><li>VO_AC  AC Output Voltage, rms value </li></ul><ul><li>e.g. 100V, 220V </li></ul><ul><li>Value = 100V </li></ul><ul><li>FREQ  AC Output Frequency </li></ul><ul><li>e.g. 50Hz, 60Hz </li></ul><ul><li>Value = 50Hz </li></ul><ul><li>N  Efficiency in 100% </li></ul><ul><li>0 < N < 1 </li></ul><ul><li>Value = 0.8 (80% Efficiency) </li></ul><ul><li>From the inverter specification, the model is characterized by setting parameters VIN_MIN, VIN_MAX, VO_AC, FREQ, and N. </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  8. 8. 6.Input-Output Characteristics All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 3-Phase AC Output Voltage: V O, LN DC Input Current DC Input Voltage 3-Phase AC Output Current
  9. 9. 6.1 Simulation Circuit and Setting <ul><li>*Analysis directives: </li></ul><ul><li>.TRAN 0 100ms 0 10us </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  10. 10. 7.Line-to-Line Output Characteristics All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 Line-to-Line Output Current Line-to-Line Output Voltage DC Input Voltage DC Input Current
  11. 11. 7.1 Simulation Circuit and Setting <ul><li>*Analysis directives: </li></ul><ul><li>.TRAN 0 100ms 0 10us </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  12. 12. 8.Efficiency Characteristics <ul><li>Output and efficiency of the Inverter on time domain analysis. </li></ul><ul><ul><ul><ul><li>Efficiency( n ) = P AC /P DC </li></ul></ul></ul></ul><ul><ul><ul><ul><li> Efficiency = (3*V O(RMS) *I O(RMS) /V IN *I IN )*100, where the output voltage (V O(RMS) ) is the inverter spec and the output current (I O(RMS) ) is read from the simulation result. </li></ul></ul></ul></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 N = 0.8 Hold the Ctrl key and left click to Calculate RMS value of I(Ru) 
  13. 13. 8.1 Simulation Circuit and Setting <ul><li>*Analysis directives: </li></ul><ul><li>.TRAN 0 50s 0 10ms </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  14. 14. 9.Minimum DC Input Voltage All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 V O(AC) disable as V IN < V IN ,MIN 3-Phase AC Output Voltage DC Input Voltage DC Input Current 24.00ms, 24.00V
  15. 15. 9.1 Simulation Circuit and Setting <ul><li>*Analysis directives: </li></ul><ul><li>.TRAN 0 250ms 0 10u </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011
  16. 16. Library Files and Symbol Files Location <ul><li>Copy LIB files from CD to C:Program FilesLTCLTspiceIVlibsub </li></ul><ul><li>Copy LTspice symbols files from CD to C:Program FilesLTCLTspiceIVlibsym </li></ul>All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 .LIB .ASY
  17. 17. Simulation Index All Rights Reserved Copyright (C) Bee Technologies Corporation 2011 Simulations Folder name <ul><li>Input-Output Characteristics............................................. </li></ul><ul><li>Line-to-Line Output Characteristics.................................. </li></ul><ul><li>Efficiency Characteristics................................................. </li></ul><ul><li>Minimum DC Input Voltage............................................... </li></ul>VO_LN VO_LL Efficiency VIN_MIN

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