Laminated Core Inductor Design

This means that alternating current passed through the primary creates a varying magnetic field around it which in turn induces an alternating current in the secondary.

Laminated core inductor design. Laminated core a transformer comprises a primary and a secondary coil that are electromagnetically linked. Design and dimensional data for etd ferrite cores 26. From solution of magnetic circuit. Essentially inductors can have a discrete gap typically in a laminated or ferrite core or a distributed gap in an iron powder core.

The fundamentals of inductance form the basis of the design of practical inductors. Design and dimensional data for ee and el planar ferrite cores 24. Fundamentals of power electronics chapter 14. The inductor design applies to both types of cores.

A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical electromechanical and magnetic devices such as electromagnets transformers electric motors generators inductors magnetic recording heads and magnetic assemblies it is made of ferromagnetic metal such as iron or ferrimagnetic compounds such as ferrites. Pressed from nickel and iron powder powdered cores exhibit low permeability and gaps effectively distributed throughout the core. Maximum flux density given a peak winding current imax it is desired to operate the core flux density at a peak value bmax the value of bmax is chosen to be less than the worst case saturation flux density bsat of the core material. The temperature of the core rises due to eddy current losses especially when high frequencies are used in the converter.

The approach is to adopt the concept of effective permeability. Design and dimensional data for ee and el ferrite cores 23. Furthermore the inductor design program is used to design the filter inductors of a battery charger for electrical vehicles chapter 8 is devoted to this application. The sheets are coated with insulation to increase its electrical resistance prevent eddy current flow between them.

Inductor design typically starts with the choice of a core. Design and dimensional data for ec ferrite cores 25. Inductor core is made up of various materials which shows different b h curve. Design and dimensional data for er.

As a comparison approximate calculations on an inductor using a laminated core are also performed. Thus we generally use the laminated sheets or granulated iron in cases where iron must be used as the core material. L n a 2 g g g ℜ o g ℜ l m b core sec 2n a p p g l v l p vldt l p 2 u a r n mlt k w of cuwire intheprimary r p cu i r 1 b core p 2 l 2 the ac inductor total loss has two components wire i2r loss and core loss. Design and dimensional data for etd low profile ferrite cores 27.

Laminated steel core inductor in such type of inductors the core is laminated which means that it is made up of a bunch of thin sheets placed on top of each other in a tight form.