Create Variable Inductance in SPICE

AI Thread Summary
Creating a variable inductance in SPICE, particularly in NI Multisim, involves using a polynomial voltage-controlled current source in parallel with a standard inductor (L0). The challenge lies in determining the appropriate coefficients for the current source to accurately model the desired inductance behavior. For those aiming to replicate a specific saturable inductor, measuring and curve fitting the inductor's characteristics is essential. Resources like the provided PDF can offer additional guidance on the implementation. Proper configuration can lead to successful modeling of variable inductance in simulation environments.
akhurash
Messages
25
Reaction score
0
I'm trying to create a variable inductance in SPICE, specifically in NI Multisim. What I'm trying to do is create a saturable inductor. I need an inductor that changes it's inductance with current. Multisim does have a "virtual" inductor that you can create a inductance function with but I can't really get it to work and I used NI but their help isn't that great either.


Has any created a variable inductor or a saturable inductor in some sort of a SPICE program (or Multisim)?

Any help is greatly appreicated. Thanks!
 
Engineering news on Phys.org
It's pretty easy. You just put a polynomial voltage controlled current source in parallel with the L0.

The trick is, what do you set the coefficients to. If you're trying to match an actual particular inductor, you're probably going to have to measure and curve fit it.

See page 2 of this PDF.
http://www.intusoft.com/articles/inductor.pdf
 

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
View full post »

Thread 'What happens if shielded cable has a short to the shield?'

While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
View full post »

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »

Similar threads

Create Inductance Vs. Current Analysis/Graph in SPICE (Multisim)
Replies
1
Views
2K
Why is impedance given as a simple Ohms unit when it's frequency dependent?
Replies
10
Views
2K
ABC reference frame synchronous generator modelling in Ltspice
Replies
1
Views
3K
Building a Safe and Efficient Induction Heater Circuit: Tips and Tricks
Replies
7
Views
6K
How does a Permanent capacitor motor actually work?
Replies
7
Views
1K
What explains the current flow in a LC circuit?
Replies
4
Views
2K
Understanding a Single Transistor Flyback Transformer Driver?
Replies
3
Views
3K
Can a Community College Lab Simulate Real Lightning Conditions?
Replies
3
Views
1K
Self excited induction generators and grid connected solar inverters?
Replies
9
Views
2K
Induction and flux linkage clarification
Replies
26
Views
7K

Hot Threads

Recent Insights

Back
Top