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Simple Model of Transformer using LTspice
1. Saturable transformer model Simplified SPICE Behavioral Model Bee Technologies Inc. All Rights Reserved Copyright (C) Bee Technologies Corporation 2012
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6. 4) Saturable core SUBCKT using LTspiceIV All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Figure 3 , Saturable core subcircuit SPICE compatible, the key parameters are shown in bold. Information of Netlist
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17. 8) Saturable transformer SUBCKT Using LTspiceIV All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Figure 17 , Saturable transformer equivalent circuit. Figure 16 , Saturable transformer symbol, the key parameters are shown in bold. Information of Netlist
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19. 9) 1:1 Saturable transformer model (Example) - Simulation Result All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Input voltage Output voltage Input Current Output Current Figure 18 , The Input–Output Characteristics of 1:1 Saturable transformer.
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21. 10) 1:1 Saturable transformer model (Example) - Simulation Result (Phase reverse) All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Figure 19 , The Input–Output Characteristics of 1:1 Saturable transformer (Phase reverse). Input voltage Output voltage Input Current Output Current
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23. 11) 2:1 Saturable transformer model (Example) - Simulation Result All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Figure 20 , The Input–Output Characteristics of 2:1 Saturable transformer. Input voltage 1 Input Current 1 Output voltage Output Current Input voltage 2 Input Current 2
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25. 12) 1:2 Saturable transformer model (Example) - Simulation Result All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Input voltage Output voltage 1 Input Current Output Current 1 Figure 21 , The Input–Output Characteristics of 1:2 Saturable transformer. Output voltage 2 Output Current 2
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27. 13) 1:2 Saturable transformer model (Example) - Simulation Result (Center tap) All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Figure 22 , The Input–Output Characteristics of 1:2 Saturable transformer (Center tap). Input voltage Output voltage 1 Input Current Output Current 1 Output voltage 2 Output Current 2
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29. 14) Application Circuit Example: Flyback converter - Simulation Result All Rights Reserved Copyright (C) Bee Technologies Corporation 2012 Secondary voltage of transformer Output voltage= 5Vdc Figure 23 , Flyback converter with Saturable transformer model. Output ripple voltage Secondary current of transformer V RIPPLE Input voltage= 24Vdc