Good Morning All
I have a DC link Choke ( Common EI Core), When measuring through LCR meter It gives me reading (see table.). When Adding Inductor in Series ( Pic 3 and Pic 4) it Give the value that is not expected. I am referring formula to calculate inductor in series Leq=L1+L2+2Sqrt(L1*L2). Don’t Know why LCR meter is showing different.
Value shown on image is measured form LCR meter. Measured on both 100Hz and 1Khz.
Pic1 :- Measure L1 Inductance using LCR
Pic2:- Measure L2 Inductance using LCR
Pic 3:- Measure Leq Inductance using LCR ( L1 and L2 in series and in phase )
Pic 4:- Measure Leq Inductance using LCR ( L1 and L2 in series and in out phase )