COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 42 Issue 3

Guest editorial: Introduction to the special issue Theoretical Electrical Engineering (ISTET 2022)

Tomasz Chady, Stanislaw Gratkowski, Przemyslaw Lopato

Can science exist without free discussion?

Ryszard Sikora

The aim of this article is to draw attention to the importance of open discussion for the proper development of science.

Optimal design of electrodes for functional electrical stimulation applications to single layer isotropic tissues

Mary Grace Cassar, Cristiana Sebu, Michael Pidcock, Shubham Chandak, Brian Andrews

The purpose of this paper is to investigate the design of skin surface electrodes for functional electrical stimulation using an isotropic single layered model of the skin and…

Low-speed permanent magnet generator for use in a compact wind turbine

Michal Cichowicz, Wojciech Pilecki, Marcin Wardach, Paweł Prajzendanc, Kamil Cierzniewski, Ryszard Palka

This paper aims to present the project of a permanent magnet synchronous machine which can be used as generator in the vertical axis wind turbine.

Measurement and analysis of vibration characteristics of nanocrystalline magnetic core under symmetrical/asymmetrical waveforms

Bin Chen, Binsheng Xi, Nina Wan, Shuaibing Wang, Bo Tang

Because the nanocrystalline core is widely used in power electronic equipment, and the excitation waveform of its working mode is complex, the vibration at medium and high…

Design method for high-power high-frequency magnetic-resonance air-core transformer

Bin Chen, Xin Tao, Nina Wan, Bo Tang

The purpose of this paper is to study the multi-objective optimization design method of high-power high-frequency magnetic-resonance air-core transformer (ACT).

Enhanced WPT structures via EC-SRR-based metasurfaces

Dimitrios I. Karatzidis, Theodoros T. Zygiridis, Nikolaos V. Kantartzis

The purpose of this paper is to present a family of robust metasurface-oriented wireless power transfer systems with improved efficiency and size compactness. The effect of…

An efficient modeling approach of 1D-planar metamaterials in the high-frequency regime

Melanie Schiemer, Thomas Reum, Hannes Toepfer

The purpose of this paper is to present an alternative modeling approach in terms of the determination of a physically equivalent circuit model for one-dimensional (1D) planar…

DC operating points of nonlinear circuits and generalized Carleman linearization

Harry Weber, Wolfgang Mathis

The purpose of this paper is to present a procedure for approximating DC operating points of nonlinear circuits. The presented approach can also be applied in case of multiple DC…

Closed-form and technology independent phase noise relation for LC oscillators

Mehrdad Moradnezhad, Hossein Miar-Naimi

The purpose of this paper is to find a closed relation for the phase noise of LC oscillators.