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On the Impact of Magnetic Saturation on Incipient Itsc Fault Signal Detection in Pmsms Under Ev Transient Conditions

Adrienn Dineva Adam Zsuga

Publication Name: 2025 19th International Conference on Electrical Machines Drives and Power Systems Elma 2025 Proceedings

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

Incipient inter-turn short-circuit (ITSC) faults in permanent magnet synchronous machines (PMSMs) pose substantial diagnostic challenges, particularly under transient operating conditions common in electric vehicle (EV) applications. Traditional frequency-domain techniques, such as the Fast Fourier Transform (FFT), exhibit poor time-frequency resolution, making them ineffective for capturing non-stationary fault signatures. This study employs FEM-based numerical simulations combined with Continuous Wavelet Transform (CWT) analysis to accurately detect and localize ITSC fault characteristics under dynamic load conditions. While magnetic saturation is known to influence machine behavior, its quantitative impact on electrical fault signal amplitudes has not been explicitly addressed in previous diagnostic approaches. To fill this gap, a high-fidelity FEM simulation framework was developed, encompassing the full operational envelope of PMSMs. The results demonstrate that magnetic saturation leads to a notable attenuation-approximately 20-30% - of fault-induced current components, significantly complicating onboard detection. To the best of the authors' knowledge, such an integrated, EV-specific onboard diagnostic approach for incipient ITSC faults has not yet been reported in the literature. Although onboard thermal management systems exist, incipient ITSC faults may rapidly escalate into severe winding damage within 10 to 60 minutes under continuous load. This highlights the critical need for early detection methods robust to transient dynamics and magnetic nonlinearities.

Open Access: Yes

DOI: 10.1109/ELMA65795.2025.11083495

Blockchain Technologies in Logistics and Supply Chain Management: A Bibliometric Review

Horst Treiblmaier Abderahman Rejeb Karim Rejeb Steve Simske

Publication Name: Logistics

Publication Date: 2021-12-01

Volume: 5

Issue: 4

Page Range: Unknown

Description:

The emergence of blockchain technology has sparked significant attention from the supply chain management (SCM) and logistics communities. In this paper, we present the results from a thorough bibliometric review that analytically and objectively identifies the intellectual structure of this field, the seminal papers, and the most influential scholars. We employ a knowledge domain visualization technique to generate insights that go beyond other review studies on blockchain research within logistics and SCM. The analysis starts with selecting a total of 628 papers from Scopus and the Web of Science that were published during 2016–2020. The bibliometric analysis output demonstrates that the number of blockchain papers has rapidly increased since 2017. The most productive researchers are from the USA, China, and India. The top academic institutions contributing to the literature are also identified. Based on network analyses, we found that the literature concentrates mainly on the conceptualization of blockchain; its potentials for supply chain sustainability; its adoption triggers and barriers; and its role in supporting supply chain agility, trust, protection of intellectual property, and food/perishable supply chains. Besides systematically mapping the literature, we identify several research gaps and propose numerous actionable research directions for the future. This study enriches the extant blockchain literature, provides a timely snapshot of the current state of research, and examines the knowledge structure of blockchain research in logistics and SCM with the help of evidence-based scientometric methods.

Open Access: Yes

DOI: 10.3390/logistics5040072

Mathability of emc emission testing for mission crucial devices in gtem waveguide

Gyorgy Elmer Zoltan Kvasznicza Viktor Bagdán Ildiko Horvath István Gyurcsek

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2021-01-01

Volume: 18

Issue: 1

Page Range: 159-173

Description:

In connection with investigations related to mathability and to applications of computer-assisted methods for studying a validation of Electromagnetic Compatibility (EMC) tests is presented. This paper presents a validation of Electromagnetic Compatibility (EMC) tests performed in Gigahertz Transverse Electromagnetic (GTEM) cells as an alternative method to tests performed at Open Area Test Sites (OATS) or expensive anechoic chambers. The equipment selected for the inspection is widely used in electronic devices of crucial reliability expectations like medical measurements or electronic components for transport and industrial process control. This special engineering topic gives a good example of the wide applicability of mathability.

Open Access: Yes

DOI: 10.12700/APH.18.1.2021.1.10

Humanitarian Drones: A Review and Research Agenda

Horst Treiblmaier Abderahman Rejeb Karim Rejeb Steve Simske

Publication Name: Internet of Things Netherlands

Publication Date: 2021-12-01

Volume: 16

Issue: Unknown

Page Range: Unknown

Description:

This study investigates the capabilities, performance outcomes, and barriers of drones applied to humanitarian logistics (HL). A systematic literature review was conducted to synthesize prior research on drones and cumulatively identify current knowledge gaps which require further investigation. In order to identify the relevant literature on the topic, a rigorous research protocol was applied for the retrieval and selection processes. In total, 142 publications fulfilled the selection criteria and were thoroughly analyzed. The findings of this review paper summarize the capabilities, barriers and performance outcomes of humanitarian drones applied to logistics operations, management, and governance in a comprehensive framework. More specifically, three important capabilities (i.e., transportation and delivery; surveying and monitoring; communication and integration), three performance outcomes (i.e., flexibility and responsiveness; cost reduction; sustainability) and adoption barriers in three areas (i.e., technology; organization; environment) were identified. Based on these findings, future research directions are derived for the capabilities of humanitarian drones, their performance outcomes, and their respective barriers. This study analyzes potential applications of drones in the humanitarian field and presents a comprehensive agenda that structures and guides further research on the topic.

Open Access: Yes

DOI: 10.1016/j.iot.2021.100434

BARRIER FACTORS OF SUPPLY CHAIN MANAGEMENT IMPLEMENTATION IN SMALL AND MEDIUM-SIZED ENTERPRISES: EVIDENCE FROM HUNGARY AND INDONESIA

Santi Setyaningsih Peter Kelle

Publication Name: Economics and Sociology

Publication Date: 2021-01-01

Volume: 14

Issue: 4

Page Range: 73-88

Description:

Small and Medium-Sized Enterprises (SMEs) have major difficulties in implementing Supply Chain Management (SCM) strategy. Previous studies show that different types of industries in size, focus, and location have different SCM implementation problems but there is a lack of research on the effect of supply chain structure. This paper addresses this gap by comparing the barrier factors of SMEs with different supply structures. The survey revealed the ranking of the barrier factors in two countries and analyzes the effect of the different SCM structures. With a more complex supply structure, the Indonesian companies suffer more from their organizational factors as their top barriers in the rank order: inadequate performance measure, and management capacity, lack of inter-departmental cooperation in communication, and unclear organization objective. While Hungarian SMEs, having a simpler supply structure, evaluated the lack of financial resources, employees, knowledge of SCM, and poor commitment from other SCM partners as their top barrier factors. The outcomes of this research provide valuable knowledge to managers in priorities of SCM strategy implementation depending on the complexity of their supply structure.

Open Access: Yes

DOI: 10.14254/2071-789X.2021/14-4/4

Solution of the TEAM workshop problem No. 7 by the finite element method

Miklós Kuczmann Gergely Kovács

Publication Name: Przeglad Elektrotechniczny

Publication Date: 2011-01-01

Volume: 87

Issue: 3

Page Range: 99-102

Description:

This paper presents some potential formulations which can be derived from the "quasi-static" Maxwell's equations. The simulation results of the potential formulations are compared with each others focusing their CPU times and their accuracy - and with the measurement results, as well. The model -which was simulated - the TEAM workshop problem No. 7. The magnetic flux density and the eddy current were shown by the results of the simulation.

Open Access: Yes

DOI: DOI not available

Modeling of loss aversion in solving fuzzy road transport traveling salesman problem using eugenic bacterial memetic algorithm

János Botzheim Peter Foldesi

Publication Name: Memetic Computing

Publication Date: 2010-12-01

Volume: 2

Issue: 4

Page Range: 259-271

Description:

The aim of the traveling salesman problem (TSP) is to find the cheapest way of visiting all elements in a given set of cities and returning to the starting point. In solutions presented in the literature costs of travel between nodes (cities) are based on Euclidean distances, the problem is symmetric and the costs are constant and crisp values. Practical application in road transportation and supply chains are often fuzzy. The risk attitude depends on the features of the given operation. The model presented in this paper handles the fuzzy, time dependent nature of the TSP and also gives solution for the asymmetric loss aversion by embedding the risk attitude into the fitness function of the bacterial memetic algorithm. Computational results are presented as well. © 2010 Springer-Verlag.

Open Access: Yes

DOI: 10.1007/s12293-010-0037-4

Computational Procedure for Determining the Shear Yield Stress-Shear Deformation Relationship in Magnetorheological Fluids from Anton-Paar Measurement Data

Dávid Törocsik Péter Horváth

Publication Name: Strojnicky Casopis Journal of Mechanical Engineering

Publication Date: 2024-11-01

Volume: 74

Issue: 2

Page Range: 25-34

Description:

In the past decade, magnetorheological fluids have been applied in various devices. This article focuses on developing a new computational procedure to determine the shear strength-shear strain relationship of magnetorheological fluids from the measurement data obtained by using an Anton-Paar rotational viscometer.

Open Access: Yes

DOI: 10.2478/scjme-2024-0022

Investigation of the long-term stability of various tinctures belonging to the lamiaceae family by HPLC and spectrophotometry method

E. Lakatos V. Kapcsándi Székelyhidi Rita Beatrix Sik Zsolt Ajtony

Publication Name: Chemical Papers

Publication Date: 2021-11-01

Volume: 75

Issue: 11

Page Range: 5781-5791

Description:

The aim of the current study was to analyze the stability of rosmarinic acid in ethanolic tinctures of lemon balm (Melissa officinalis L.), oregano (Origanum vulgare L.), peppermint (Mentha x piperita), rosemary (Rosmarinus officinalis L.), sage (Salvia officinalis L.), and thyme (Thymus vulgaris L.). High-performance liquid chromatography with diode-array detection (HPLC–DAD) was employed to monitor the concentration of the marker compound over a six month period. Furthermore, the tinctures were also evaluated for caffeic acid, total phenolic content, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity. We observed that the concentration of rosmarinic acid in tincture stored in closed amber glasses at ambient temperature decreased significantly during 6-month storage. Furthermore, our study squarely confirms the fact that a part of rosmarinic acid is converted to caffeic acid. The tested tinctures can be listed in the following order according to the greatest stability of the marker compound: rosemary > peppermint > oregano > lemon balm > thyme > sage. The results of the study indicated a linear relationship between DPPH values and total phenolic (R2 = 0.92) or rosmarinic acid (R2 = 0.85) contents.

Open Access: Yes

DOI: 10.1007/s11696-021-01755-z