PristupačnostNumerical Modelling of Complex Electromagnetic Phenomena in Transformers
Transformers are crucial devices in efficient and reliable transmission and distribution of electricity. Croatian transformer manufacturers are among a top few in the world, and their annual production is worth about €300 million, what is about 2% of the world production. It is possible to keep this position on the world market only if there is a close collaboration between the academic community and transformer manufacturers.
Notable progress in technology of transformers is based on utilization of new materials and application of advanced design methodologies, which incorporate sophisticated numerical methods for modelling of processes in transformers. This project is focused on research and development of advanced numerical techniques for solving various electromagnetic phenomena in transformers and their application in design.
Crucial subjects in transformer design are: insulation system, electromagnetic losses and windings. Consequently, researches within this project are organized in three subprojects:
1. New methods for design of insulating systems. The aim of this subproject is to develop new comprehensive numerical method for computation of electric fields within the insulating system.
2. Computation of electromagnetic losses with the aim to develop a new method of estimation of stray losses level of power transformer, as well as the methodology of simultaneous modelling of electromagnetic field, thermal field and fluid dynamics field in transformers.
3. High frequency modelling of windings. The objective of this subproject is to develop fast and accurate procedures for the determination of capacitances, inductances and resistances in high-frequency range. These elements will be used for creating an equivalent lumped-element circuit for determination of voltage stresses along a winding.
The overall goal is to reduce dimensions of transformers and to increase their reliability by application of new methods and procedures