Abstract
This paper demonstrates the benefits of a generalised arc-segment lumped parameter thermal equivalent circuit representation that can be used in the three-dimensional thermal modelling of transformers, wound passive components and electrical machines. The arc-segment is particularly suited to modelling stator/rotor teeth and end-windings. Commonly used two-resistor lumped parameter thermal networks do not accurately account for internal heat generation, which is essential for accurate temperature prediction. In contrast, the use of a T-network formulation can accurately cater for internal heat generation along with material anisotropy. The element formulation is verified numerically and experimentally using two and three-dimensional finite element analysis and through the thermal analysis of a power inductor.
| Original language | English |
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| Title of host publication | 19th International Conference on the Computation of Electromagnetic Fields (Compumag 2013) |
| Pages | 1-2 |
| Number of pages | 2 |
| Publication status | Published - 4 Jul 2013 |
Keywords
- A General Arc-Segment Element