Accelerating Virtual Hotspots Analysis in Static Electromagnetic Devices

Abstract

The trend in power conversion is smaller customizable nonstandard devices, in addition to risk mitigation in in-service and end-of-life devices. The reliability expected of power conversion devices, for example, transformers, requires hotspots analysis. Virtual prototypes are therefore important in this analysis, especially in cases where analytical-empirical models are difficult to apply. The main challenge in using virtual prototypes, in particular 3D models, is the long simulation time. Hence of little use in product development. By using advanced FEA capabilities, the simulation time can be reduced significantly. Productivity is increased, allowing the exploration of different designs to ensure product performance and reliability. This paper will introduce these FEA capabilities that are used to estimate the core, winding and structural hotspots in a single-phase distribution transformer.