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Comparative magnetic analysis of I-type actuator based active magnetic bearing system

Debnath Sukanta, Biswas Pabitra Kumar

Journal of Power Technologies

2020

Vol. 100, nr 3

211--222

We investigated the performance of designed single coil and multi-coil actuators for the Active Magnetic Bearing (AMB) system. The attractive force differs depending on the structure and actuator design. The behavior and characteristics of particular actuators differ too. Ansys Maxwell was used to perform magnetic analyses of flux, flux density, field strength, force profile and inductance profile in 2D, and magnetic flux density, field strength, current density and inductance profile in 3D. These analyses were performed for the 10 mm air gap between the actuator and rotor for single, two, three and four coils and all the parameters were compared. The quantities were compared to provide insight into the behavior of single and multi-coil actuators.

On the characteristic and stability of iron diet supplements

Grzechulska–Damszel Joanna, Markowska–Szczupak Agata, Żołnierkiewicz Grzegorz, Typek Janusz, Guskos Nikos, Morawski Antoni W.

Polish Journal of Chemical Technology

2019

Vol. 21, nr 3

60--67

The iron diet supplements: AproFER 1000 and AproTHEM were subjected to various chemical, microbial and magnetic analysis. The microbial analysis revealed no presence of pathogenic bacteria in the studied products. No signifi cant changes in iron content or forms (bivalent/trivalent) were observed in EPR analysis of supplements stored at different conditions for a long period of time. The chemical and magnetic analysis showed that both AproFER 1000 and AproTHEM contain a high concentration of bivalent iron so they can be used as an iron diet supplements.