Research

Last updated on November 19, 2011.

My personal research interests cover the following areas:

- high- and low-frequency computational electromagnetics (CEM)
-
design optimization (deterministic and stochastic optimization methods)
- multiphysics simulations (coupled fields analysis: mainly electromagnetic-mechanical and electromagnetic-thermal analysis)
- electromagnetic simulations and optimizations of photonic crystals and other composite doped metamaterials

I have experience with the following numerical methods for scalar and vector fields computations:

- Finite Element Method (FEM) in frequency and time domain
- Boundary Element Method (BEM) in frequency domain
- Finite Difference Method (FDM) in frequency and time (FDTD) domain
- Multiple Multipole Program (MMP)

Relatively long time ago in 1996, I started my field computations in the area of low-frequency eddy-current simulations. At that time (1996-2001) I was simulating (using my own FEM code) and optimizing (using the Genetic Algorithm) transformers and electrical machines. You can have a look at some of my results from that time by following this link.

After that my interest shifted towards electromagnetic waves and high-frequency applications. For several years (2002-2005) I was computing the electromagnetic fields in photonic crystal structures and metamaterials. You can have a look at my web site from that time by following this link.

It is perhaps interesting for you to try my on-line do-it-yourself system for designing a photonic crystal power divider. Through this simple exercise you can feel the difficulties hidden behind the design of such nano-devices. If you are interested to try this, please click here.   

During the last seven years at the ABB Corporate Research in Dättwil (ABB Switzerland Ltd), I was working mainly on industrial applications in the area of electromagnetic fields and waves:

- Code development for a BEM based 3-D electromagnetic field solver (paper 1, book chapter)
- Code development for fast BEM: matrix compression and preconditioning techniques (paper 1, paper 2)
- Design optimization (paper1, paper 2, paper 3)
- Large scale 3-D simulations of power and distribution transformers (paper 1, paper 2)
- Large scale 3-D coupled electromagnetic - mechanical analysis of generator circuit breakers (GCB) (paper 1)
- Full-Maxwell 3-D simulations of very fast transients (VFTs) in gas insulated switchgears (GIS) (paper 1)

Since September 1, 2011 I am working as a professor of electrical engineering at the Institute of Energy Technology (IET) of the University of Applied Sciences in Rapperswil (HSR). Presently the goal of my reasearch is to support the product and technology development of our industrial partners with the special focus on the following aspects:

- Simulation based design and virtual prototyping
- Design optimization
- CAD systems and their coupling with simulation tools

Last updated on November 19, 2011.