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Abstract

Skilful preservation of the cultural landscape on the basis of post-industrial facilities, including post-mining facilities and geoheritage objects, may contribute to a positive change in the functionality of abandoned or degraded sites. The article presents selected geological, geomorphological and anthropogenic objects in the vicinity of Mikołów (central part of the US CB, southern Poland). Their evaluation in the context of being the part of unique cultural landscape created by historical mining activities was carried out. The detailed geotourist valorisation of 4 selected geoheritage and mining heritage objects/sites was carried out in the scope of their current state, potential and the level of preparation for possible fulfilling the educational functions. The research outputs and valorization results presented in the article allowed to draw conclusions and formulate recommendations for the development of the analyzed geotourist objects and sites in terms of the implementation of the didactic process, characterised by specific requirements. A s a result of the performed valorization of the analyzed objects, from the point of view of the recipient (academic teacher), the best result was obtained by the Triassic limestone quarry in Mikołów Mokre, and the lowest moraine ridge in the Promna Valley. The obtained results also showed high visual and cognitive values of the objects, especially in terms of geodiversity, the dominant element and cultural connections, where the Mikołów quarry also showed the highest value. Low ratings of the utility and investment values of these objects result mainly from the state of preservation, the lack of tourist infrastructure and the lack of their promotion as an important part of the industrial and cultural heritage of the region.
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Bibliography


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Authors and Affiliations

Marek Marcisz
1
ORCID: ORCID
Łukasz Gawor
1
ORCID: ORCID
Malwina Kobylańska
2

  1. Silesian University of Technology, Gliwice, Poland
  2. Cuprum Ltd. Research & Development Centre, Wrocław, Poland
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Abstract

Fractional-slot concentrated-winding permanent magnet synchronous machines (FSCW-PMSMs) have a good prospect of application in the drive system of electric and hybrid electric vehicles. However, the armature magnetomotive force (MMF) of FSCWPMSM contains a large number of space harmonics, which induce large magnet eddycurrent loss (ECL). To solve this problem, a dual three-phase 10-pole and 24-slot winding layout is proposed.MMFharmonic analysis shows that the 1st, 7th and 17th space-harmonic winding factors of the proposed winding can be reduced by 100%, 87% and 87% respectively, compared with a dual three-phase 10-pole and 12-slot winding. Electromagnetic performances of the proposed machine under rated sinusoidal current supply and space vector pulse-width-modulated (SVPWM) voltage supply are investigated based on 2D finite-element analysis. It is shown that the proposed machine can meet the requirement of torque and efficiency in the full speed range. Especially, magnet ECL can be reduced greatly due to the reduction of the 7th and 17th space harmonics.
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Authors and Affiliations

Zhenfei Chen
1
Ning Xing
2
Hongzhong Ma
1
Zhixin Li
3
Jiayu Li
1
Chenyang Fan
1

  1. College of Energy and Electrical Engineering, Hohai University Jiangsu, China
  2. School of Electrical and Information Engineering, Tianjin University Tianjin, China
  3. Electric Power Science Research Institute, Jiangsu Electric Power Company, Jiangsu, China

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