* Z:\home\khalils\Downloads\files\data\raw_asc\1787491796bd_saturating_inductor.asc
* Generated by LTspice 26.0.1 for Windows.
* G11, C11, E11 models volt-\n seconds applied to inductor
* F11, V11 reflects current\n resulting from applied volt-sec
* R11 models linear inductance\n with unity gain: L = C11*R11
* V11 senses current drawn by\n applied volt-seconds
* Generalized Impedance Converter Based Linear Inductor Model
* R11 models winding resistance
* No Saturation\n(standard inductor)
* No Saturation\n(linear inductor)
* Hard Saturation\n(additive model)
* Hard Saturation\n(subtractive model)
* L = unsaturated inductance\nLs= saturated inductance\nIs = saturation current
* Hard Saturation\n(stepped model)
* Hard Saturation\n(switched model)
* Soft Saturation
* Hard Saturation\n(stepped model)
* Soft Saturation\n(adjustable hardness)
* Very Soft Saturation
* No Saturation\n(arbitrary inductor model)
* Flux={L*Is}*tanh(x/{Is})
* Flux={L*Is}*pwrs({2/Pi}*atan({Pi/2}*pwrs(x/{Is},{n})),{1/n})
* Flux={L}*limit(x,{-Is},{Is})
* Test source for all\n inductor models
* Various Approaches for Modeling Saturating Inductors\nby analog@ieee.org - April 2004
* This simulation explores the new arbitrary inductor model and compares \nit to other methods of modeling inductor saturation, such as the B-source \ninductance multiplier method, the generalized impedance converter \nmethod, and a method with current controlled switches.
* Soft Saturation\n(additive model)
+ Is=3p)
+ Vfwd={Is} Vrev={Is})
E31 N021 0 N020 0 {.7/Is}
C11 N004 0 {L}
L2 2 1 {Ls}
V2 0 N017 0
R7 Vs N012 .5
R22 N011 0 1
V31 N021 N022 0
L1 0 N002 {L}
W1 N015 N016 V1 s
R9 Vs N014 .5
R12 N006 0 1
W2 N015 N016 V2 s
L9s N015 N014 {Ls}
G31 0 N020 N019 0 1
G21 0 N009 N008 0 1
R31 Vs N019 .5
L4 6 5 {Ls}
L9 N016 N015 {L-Ls}
R1 Vs N002 .5
E11 N005 0 N004 0 1
B3 4 0 V=if(abs(I(L3))<Is,0,V(3,4)*(Ls/L-1))
L6 0 N007 Flux={L-Ls}*limit(x,{-Is},{Is})+{Ls}*x
R3 Vs 3 .5
G11 0 N004 N003 0 1
R2 Vs 1 .5
L8 0 N018 Flux={L*Is*2/Pi}*atan(x/{Is*2/Pi})
E21 N010 0 N009 0 1
V21 N010 N011 0
B4 6 0 V=V(5,6)*(L/Ls-1)/(1+(I(L4)/Is)**6)
R11 Vs N003 .5
D21 N011 0 s
R8 Vs N018 .5
D31 N022 0 r
F21 N008 0 V21 1
R21 Vs N008 .5
L5 0 N001 Flux={L}*x
Vs Vs 0 PULSE(-1 1 1m .10u .10u 2m 4m)
C31 N020 0 {L}
R6 Vs N007 .5
B2 2 0 V=if(abs(I(L2))>Is,0,V(1,2)*(L/Ls-1))
R32 N022 0 1
V11 N005 N006 0
F31 N019 0 V31 {Is/.7}
L7s N013 0 {Ls}
C21 N009 0 {L}
R4 Vs 5 .5
V1 N016 N017 0
R5 Vs N001 .5
L3 4 3 {L}
D32 0 N022 r
L7 N013 N012 Flux={(L-Ls)*Is}*pwrs(tanh(pwrs(x/{Is},{n})),{1/n})
F11 N003 0 V11 1
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.tran 0 44m 40m uic
.model r d(Rs={Ls/L}
.model s d(Ron={Ls/L}
.model s csw(Ron=1u It={Is})
.param L=1m Ls=10u Is=.7
.param n=2
.backanno
.end

* LTspice schematic (.asc):
Version 4
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IOPIN -576 -112 In
IOPIN -976 -384 Out
IOPIN -576 624 In
IOPIN -576 128 In
IOPIN -992 -112 In
IOPIN -992 368 In
IOPIN -992 128 In
IOPIN -576 368 In
IOPIN -1424 128 In
IOPIN -1424 368 In
IOPIN -1424 624 In
IOPIN -1424 -112 In
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SYMBOL res -560 -96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
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SYMATTR Value .5
SYMBOL g -304 640 R0
WINDOW 0 16 16 Left 0
WINDOW 3 16 96 Left 0
SYMATTR InstName G31
SYMATTR Value 1
SYMBOL f -432 -80 R0
WINDOW 0 16 0 Left 0
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WINDOW 123 16 80 Left 0
SYMATTR InstName F11
SYMATTR Value V11
SYMATTR Value2 1
SYMBOL res -560 384 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R9
SYMATTR Value .5
SYMBOL e -112 -96 R0
WINDOW 0 16 16 Left 0
WINDOW 3 16 96 Left 0
SYMATTR InstName E11
SYMATTR Value 1
SYMBOL cap -256 656 R0
WINDOW 0 32 0 Left 0
WINDOW 3 32 80 Left 0
SYMATTR InstName C31
SYMATTR Value {L}
SYMBOL ind2 -1184 384 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 72 56 VCenter 0
SYMATTR InstName L7
SYMATTR Value Flux={(L-Ls)*Is}*pwrs(tanh(pwrs(x/{Is},{n})),{1/n})
SYMATTR Type ind
SYMBOL voltage -80 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 Invisible 0
SYMATTR InstName V21
SYMATTR Value 0
SYMBOL ind2 -752 -96 M270
WINDOW 0 32 56 VTop 0
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SYMATTR InstName L1
SYMATTR Value {L}
SYMATTR Type ind
SYMBOL f -432 656 R0
WINDOW 0 16 0 Left 0
WINDOW 3 40 41 Left 0
WINDOW 123 13 80 Left 0
SYMATTR InstName F31
SYMATTR Value V31
SYMATTR Value2 {Is/.7}
SYMBOL bv -736 144 R0
WINDOW 0 16 16 Left 0
WINDOW 3 -16 104 Right 0
SYMATTR InstName B2
SYMATTR Value V=if(abs(I(L2))>Is,0,V(1,2)*(L/Ls-1))
SYMBOL res -976 144 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value .5
SYMBOL bv -736 640 R0
WINDOW 0 16 16 Left 0
WINDOW 3 -16 104 Right 0
SYMATTR InstName B4
SYMATTR Value V=V(5,6)*(L/Ls-1)/(1+(I(L4)/Is)**6)
SYMBOL cap -256 160 R0
WINDOW 0 32 0 Left 0
WINDOW 3 32 80 Left 0
SYMATTR InstName C21
SYMATTR Value {L}
SYMBOL ind2 -1184 144 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 72 56 VCenter 0
SYMATTR InstName L6
SYMATTR Value Flux={L-Ls}*limit(x,{-Is},{Is})+{Ls}*x
SYMATTR Type ind
SYMBOL diode 112 672 R0
WINDOW 0 32 -16 Left 0
WINDOW 3 32 64 Left 0
SYMATTR InstName D31
SYMATTR Value r
SYMBOL f -432 160 R0
WINDOW 0 16 0 Left 0
WINDOW 3 40 41 Left 0
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SYMATTR Value V21
SYMATTR Value2 1
SYMBOL ind2 -1184 640 M270
WINDOW 0 32 56 VTop 0
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SYMATTR InstName L8
SYMATTR Value Flux={L*Is*2/Pi}*atan(x/{Is*2/Pi})
SYMATTR Type ind
SYMBOL res -976 640 R270
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SYMATTR InstName R4
SYMATTR Value .5
SYMBOL res -976 -96 R270
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SYMATTR InstName R1
SYMATTR Value .5
SYMBOL res 32 -96 R0
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SYMATTR InstName R12
SYMATTR Value 1
SYMBOL ind -1184 352 R0
SYMATTR InstName L7s
SYMATTR Value {Ls}
SYMBOL csw -320 448 R270
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SYMATTR InstName W1
SYMATTR Value V1 s
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SYMATTR Value {L}
SYMBOL ind2 -1184 -96 M270
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SYMATTR Value Flux={L}*x
SYMATTR Type ind
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SYMATTR Value 1
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SYMATTR Value .5
SYMBOL Misc\\xvaristor 112 144 R0
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SYMATTR Value s
SYMATTR Prefix D
SYMBOL voltage -208 368 M90
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SYMBOL ind2 -752 640 M270
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SYMATTR Value {Ls}
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SYMATTR Value V2 s
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SYMATTR Value .5
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SYMATTR InstName V31
SYMATTR Value 0
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SYMATTR InstName L9
SYMATTR Value {L-Ls}
SYMATTR Type ind
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SYMATTR Value {Ls}
SYMATTR Type ind
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WINDOW 0 32 56 VTop 0
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SYMATTR Value .5
SYMBOL res -1408 -96 R270
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SYMATTR InstName R5
SYMATTR Value .5
SYMBOL res -976 384 R270
WINDOW 0 32 56 VTop 0
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SYMATTR Value .5
SYMBOL e -112 640 R0
WINDOW 0 16 16 Left 0
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SYMATTR InstName E31
SYMATTR Value {.7/Is}
SYMBOL res 32 640 R0
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SYMATTR Value 1
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SYMATTR InstName R7
SYMATTR Value .5
SYMBOL diode 176 736 M180
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SYMATTR Value {Ls}
SYMATTR Type ind
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WINDOW 0 32 56 VTop 0
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SYMATTR Value {L}
SYMATTR Type ind
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SYMATTR Value .5
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FLAG -864 624 5
FLAG -752 624 6
TEXT -1488 -384 Left 0 !.tran 0 44m 40m uic
TEXT -248 -192 VLeft 0 ;G11, C11, E11 models volt-\n seconds applied to inductor
TEXT -432 -192 VLeft 0 ;F11, V11 reflects current\n resulting from applied volt-sec
TEXT 56 -192 VLeft 0 ;R11 models linear inductance\n with unity gain: L = C11*R11
TEXT -56 -192 VLeft 0 ;V11 senses current drawn by\n applied volt-seconds
TEXT -224 -592 Bottom 0 ;Generalized Impedance Converter Based Linear Inductor Model
TEXT 32 568 Left 0 !.model r d(Rs={Ls/L}\n+ Is=3p)
TEXT -504 -192 VLeft 0 ;R11 models winding resistance
TEXT 32 320 Left 0 !.model s d(Ron={Ls/L}\n+ Vfwd={Is} Vrev={Is})
TEXT -128 488 Left 0 !.model s csw(Ron=1u It={Is})
TEXT -1056 -56 Left 0 ;No Saturation\n(standard inductor)
TEXT -648 -56 Left 0 ;No Saturation\n(linear inductor)
TEXT -1488 -328 Left 0 !.param L=1m Ls=10u Is=.7
TEXT -1056 184 Left 0 ;Hard Saturation\n(additive model)
TEXT -1056 424 Left 0 ;Hard Saturation\n(subtractive model)
TEXT -1488 -296 Left 0 ;L = unsaturated  inductance\nLs= saturated inductance\nIs = saturation current
TEXT -648 184 Left 0 ;Hard Saturation\n(stepped model)
TEXT -648 424 Left 0 ;Hard Saturation\n(switched model)
TEXT -648 680 Left 0 ;Soft Saturation
TEXT -1488 184 Left 0 ;Hard Saturation\n(stepped model)
TEXT -1488 424 Left 0 ;Soft Saturation\n(adjustable hardness)
TEXT -1488 680 Left 0 ;Very Soft Saturation
TEXT -1488 -56 Left 0 ;No Saturation\n(arbitrary inductor model)
TEXT -1240 280 Center 0 ;Flux={L*Is}*tanh(x/{Is})
TEXT -1488 536 Left 0 ;Flux={L*Is}*pwrs({2/Pi}*atan({Pi/2}*pwrs(x/{Is},{n})),{1/n})
TEXT -1488 480 Left 0 !.param n=2
TEXT -1240 40 Center 0 ;Flux={L}*limit(x,{-Is},{Is})
TEXT -976 -320 Left 0 ;Test source for all\n inductor models
TEXT -1056 -600 Center 0 ;Various Approaches for Modeling Saturating Inductors\nby analog@ieee.org - April 2004
TEXT -1472 -528 Left 0 ;This simulation explores the new arbitrary inductor model and compares \nit to other methods of modeling inductor saturation, such as the B-source \ninductance multiplier method, the generalized impedance converter \nmethod, and a method with current controlled switches.
TEXT -1056 680 Left 0 ;Soft Saturation\n(additive model)