Technical Library: large inductor (Page 1 of 1)

Origin and Quantification of Increased Core Loss in MnZn Ferrite Plates of a Multi-Gap Inductor

Technical Library | 2019-11-07 08:59:14.0

Inductors realized with high permeable MnZn ferrite require, unlike iron-powder cores with an inherent dis-tributed gap, a discrete air gap in the magnetic circuit to prevent saturation of the core material and/or tune the inductance value. This large discrete gap can be divided into several partial gaps in order to reduce the air gap stray field and consequently the proximity losses in the winding. The multi-gap core, realized by stacking several thin ferrite plates and inserting a non-magnetic spacer material between the plates, however, exhibits a substan-tial increase in core losses which cannot be explained from the intrinsic properties of the ferrite. In this paper, a comprehensive overview of the scientific literature regarding machining induced core losses in ferrite, dating back to the early 1970s, is provided which suggests that the observed excess core losses could be attributed to a deterioration of ferrite properties in the surface layer of the plates caused by mechanical stress exerted during machining.

Power Electronic Systems Laboratory (PES)

  1  

large inductor searches for Companies, Equipment, Machines, Suppliers & Information

Circuit Board, PCB Assembly & electronics manufacturing service provider

Best Reflow Oven
Voidless Reflow Soldering

Reflow Soldering 101 Training Course
High Throughput Reflow Oven

Stencil Printing 101 Training Course
SMT feeders

Software for SMT placement & AOI - Free Download.
design with ease with Win Source obselete parts and supplies

Private label coffee for your company - your logo & message on each bag!