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1 – 2 of 2Marcin Lefik, Krzysztof Komeza, Ewa Napieralska-Juszczak, Daniel Roger and Piotr Andrzej Napieralski
The purpose of this paper is to present a comparison between reluctance synchronous machine-enabling work at high internal temperature (HT° machine) with laminated and solid rotor.
Abstract
Purpose
The purpose of this paper is to present a comparison between reluctance synchronous machine-enabling work at high internal temperature (HT° machine) with laminated and solid rotor.
Design/methodology/approach
To obtain heat sources for the thermal model, calculations of the electromagnetic field were made using the Opera 3D program including effect of rotation and the resulting eddy current losses. To analyse the thermal phenomenon, the 3D coupled thermal-fluid (CFD) model is used.
Findings
The presented results show clearly that laminated construction is much better from a point of view of efficiency and temperature. However, solid construction can be interesting for high speed machines due to their mechanical robustness.
Research limitations/implications
The main problem, despite the use of parallel calculations, is the long calculation time.
Practical implications
The obtained simulation and experimental results show the possibility of building a machine operating at a much higher ambient temperature than it was previously produced for example in the vicinity of the aircraft turbines.
Originality/value
The paper presents the application of fully three-dimensional coupled electromagnetic and thermal analysis of new machine constructions designed for elevated temperature.
Details
Keywords
Sheilla Atieno Odhiambo, Piotr Fiszer, Gilbert De Mey, Carla Hertleer, Ida Nuramdhani, Lieva Van Langenhove and Andrzej Napieralski
The purpose of this paper is to develop a capacitor fully integrated into a wearable textile fabric for the application on smart clothing.
Abstract
Purpose
The purpose of this paper is to develop a capacitor fully integrated into a wearable textile fabric for the application on smart clothing.
Design/methodology/approach
A small capacitor with stainless steel yarns as the electrodes and poly-(3,4–ethylenedioxythiophene): polystryrene sulphonate (PEDOT:PSS) as the dielectric material has been made, integrated into a textile fabric. The electric performance of the capacitor was analyzed and compared with other kinds of electric capacitors.
Findings
The fabricated small, PEDOT:PSS capacitor could finally power a calculator for 37 s with the energy stored in it.
Originality/value
This finding is of an important significance for a further development on the capacitor with a better performance.
Details