Laminated Core Inductor Application

Inductors for filtering devices are widely employed in power electronics applications in order to reduce voltage and current harmonics caused by switching converters.

Laminated core inductor application. L s thenrys 10 8 mpl inductance is seen to be inversely dependent on the effective magnetic path length mpl which is the sum of the airgm. Development of the three phase laminated core variable inductor and its application to the voltage stabilizer in electric power systems research project all fiscal year 2008 fiscal year 2007. The inductance of an iron core inductor with an air gap may be expressed as. Comparison with the powder core inductors indicate the possibility of reduce inductor size and weight when using a laminated core in the low frequency application investigated in this thesis.

Laminated core inductor these core materials are formed by arranging many number of laminations on top of each other. Laminated core inductor laminated iron core ballast inductor for a metal halide lamp low frequency inductors are often made with laminated cores to prevent eddy currents using construction similar to transformers. The sheets are coated with insulation to increase its electrical resistance prevent eddy current flow between them. So this construction has more flexibility these laminations are made up of steel with insulating material between them.

Abstract and figures we propose a model with frequency dependent lumped parameters to represent the behavior of laminated iron core inductors that are used in switching converters i e for. A laminated core has advantages such as low loss high permeability and high saturation flux density. Laminated magnetic cores are made of stacks of thin iron sheets coated with an insulating layer lying as much as possible parallel with the lines of flux. For inductor applications an air gap has to be inserted into the magnetic circuit to avoid.

The layers of insulation serve as a barrier to eddy currents so eddy currents can only flow in narrow loops within the thickness of each single lamination. Approximate calculations are performed on a laminated core inductor with thick laminates 0 5 mm.