Coupled inductor experimetnal measurements

Status
Not open for further replies.
I

ivenzar

Member level 2
Joined
May 28, 2015
Messages
46
Helped
3
Reputation
6
Reaction score
3
Trophy points
8
Visit site
Activity points
361
Hello,

I have an inverse coupled inductor with two coils. Is there any experimental method to measure the coupling factor, leakage inductance and magnetizing inductance?.

Thanks!
 

Short out one inductor.
Any inductance you can still measure in the other inductor has to all be leakage inductance.

Magnetising inductance can be measured several ways, either with an inductance bridge, or measuring the resonant frequency with a known capacitor are the two most common methods.
 
Let's assume we can measure inductance by any method.

a) measure L1 (with L2 open)
b) measure L2 (with L1 open)
c) measure inductance of both in series (adding fluxes), it is L1+L2+2*M
d) measure inductance of both in series (inverting one of them), it is L1+L2-2*M

Subtracting c)-d), obtain mutal inductance M

So we have L1, L2 and M.
Get k from M=k*sqrt(L1*L2) .

If you know that L1=L2, a) and b) are not necessary: obtain L adding c)+d) .

Regards
Z
 
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…