Thermal analysis of a high‐energy density pre‐biased choke
- Resource Type
- Authors
- Philip H. Mellor; Rafal Wrobel; Neville McNeill
- Source
- COMPEL - The international journal for computation and mathematics in electrical and electronic engineering. 29:1276-1284
- Subject
- Materials science
Applied Mathematics
Choke
Mechanics
Finite element method
Computer Science Applications
Computational Theory and Mathematics
Magnet
Limit (music)
Thermal
Energy density
Electronic engineering
Electrical and Electronic Engineering
Thermal analysis
Test data
- Language
- ISSN
- 0332-1649
PurposeThe main limit of an electromagnetic design lies in its thermal performance. Accurate prediction of the temperature within a new device is therefore very desirable. The purpose of this paper is to present an accurate method of predicting temperature that has been applied for design of a high‐energy density choke.Design/methodology/approachThe thermal analysis has been carried out using initially a two‐dimensional (2D) finite element method (FEM) and then a thermal lumped parameter network. The heat flow within the network was informed from the 2D FEM analysis.FindingsThe presented lumped parameter thermal model of the high‐energy density choke has been experimentally validated and shows good agreement with the test data. The high‐energy density equal to 0.49 J/kg is demonstrated as a result of the improved thermal management and permanent magnet biasing.Practical implicationsThe results show a 1.75 increase of the energy density for the new choke design as compared with more conventional design. The low weight and volume of such components are desirable in many applications including automotive and aerospace.Originality/valueThe presented method allows for fast temperature predictions that can be used in design and optimisation of high‐energy density inductors.