sabu31
Advanced Member level 1
Hi all,
I am trying to design a 100uH inductor whose peak current is 17 A. I fixed the value of operating flux density at Bm=0.24 T (Bsat =0.32T, N87 material). With this when i calculated the required airgap I was getting approximately 0.7mm and turns as 34 ( Core selected was ETD49). However, when I wound the core with 34 turns and gave 0.7mm airgap, I was getting 400uH (approx). The desired value of inductance is being obtained at airgap of 4.5mm. Is there any mistake in calculation. I used core geometry technique for inductor design.
Please suggest what is correct procedure or related reference. Thanks.
I am trying to design a 100uH inductor whose peak current is 17 A. I fixed the value of operating flux density at Bm=0.24 T (Bsat =0.32T, N87 material). With this when i calculated the required airgap I was getting approximately 0.7mm and turns as 34 ( Core selected was ETD49). However, when I wound the core with 34 turns and gave 0.7mm airgap, I was getting 400uH (approx). The desired value of inductance is being obtained at airgap of 4.5mm. Is there any mistake in calculation. I used core geometry technique for inductor design.
Please suggest what is correct procedure or related reference. Thanks.