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Number of results: 7
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Abstract

The paper discusses in detail the construction of the Core Less Axial Flux Permanent Magnet generator simulation model. The model has been prepared in such a way that full compatibility with the elements of the SimPowerSystem library of the Matlab/Simulink package is preserved, which allows easy use of the presented simulation model for testing the work of the generator as part of a larger system. The parameters used in the model come from the MES 3D calculations performed in the Ansys/Maxwell software, for a machine prototype with a rated power of 2.8 kW, which was then used to experimentally verify the correct operation of the presented model of machine.

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Authors and Affiliations

Marek Gołębiowski
Andrzej Smoleń
Lesław Gołębiowski
Damian Mazur
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Abstract

The paper presents a simulation model of the hybrid magnetic bearing dedicated to simulations of transient state. The proposed field-circuit model is composed of two components. The first part constitutes a set of ordinary differential equations that describes electrical circuits and mechanics. The second part of the simulation model consists of parameters such as magnetic forces, dynamic inductances and velocity-induced voltages obtained from the 3D finite element analysis. The MATLAB/Simulnik softwarewas used to implement the simulation model with the required control system. The proposed field-circuit model was validated by comparison of time responses with the prototype of the hybrid magnetic bearing.

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Bibliography

[1] G. Schweitzer and H. Maslen. Magnetic bearings, theory, design, and application to rotating machinery. Springer, 2009.
[2] L. Ji, L. Xu, and Ch. Jin. Research on a low power consumption six-pole heteropolar hybrid magnetic bearing. IEEE Transactions on Magnetics, 49(8):4918–4926, 2013. doi: 10.1109/TMAG.2013.2238678.
[3] A. Piłat. Active magnetic suspension and bearing. In G. Petrone and G. Cammarata, Recent advances in modelling and simulation, chapter 24, pages 453–470. I-Tech Education and Publishing, 2008.
[4] A. Iordanidis, R. Wrobel, D. Holliday, and P. Mellor. A field-circuit model of an electrical gearbox actuator. In Proceedings of Second International Conference on Power Electronics, Machines and Drives (PEMD 2004), pages 21–26, Edinburgh, UK, 31 March–2 April, 2004. doi: 10.1049/cp:20040410.
[5] B. Tomczuk, A. Waindok, and D. Wajnert. Transients in the electromagnetic actuator with the controlled supplier. Journal of Vibroengineering, 14(1):39–44, 2012. https://www.jvejournals.com/article/10546/pdf.
[6] B. Tomczuk and M. Sobol. A field-network model of a linear oscillating motor and its dynamics characteristics. IEEE Transactions on Magnetics, 41(8):2362–2367, 2005. doi: 10.1109/TMAG.2005.852941.
[7] B. Tomczuk and D.Wajnert. Field–circuit model of the radial active magnetic bearing system. Electrical Engineering, 100(4):2319–2328, 2018. doi: 10.1007/s00202-018-0707-7.
[8] J. Zimon, B. Tomczuk, and D. Wajnert. Field-circuit modeling of AMB system for various speeds of the rotor. Journal of Vibroengineering, 14(1):165–170, 2012. https://www.jvejournals.com/article/10565/pdf.
[9] M. Łukaniszyn, M. Jagieła and, R.Wróbel. Electromechanical properties of a disc-type salient pole brushless DC motor with different pole numbers. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 22(2):285–303, 2003. doi: 10.1108/03321640310459216.
[10] M. Łukaniszyn, R. Wróbel, and M. Jagieła. Field-circuit analysis of construction modifications of a torus-type PMDC motor. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 22(2):337–355, 2003. doi: 10.1108/03321640310459261.
[11] R. Pollanen, J. Nerg, and O. Pyrhonen. Reluctance network method based dynamic model of radial active magnetic bearings. In Proceedings of the 2005 IEEE International Magnetics Conference (INTERMAG), pages 715–716, Nagoya, Japan, 4–8 April, 2005. doi: 10.1109/INTMAG.2005.1464144.
[12] M. Antila, E. Lantto and A. Arkkio. Determination of forces and linearized parameters of radial active magnetic bearings by finite element technique. IEEE Transactions on Magnetics, 34(3):684–694, 1998. doi: 10.1109/20.668066.
[13] B. Polajzer, G. Stumberger, J. Ritonja, and D. Dolinar. Variations of active magnetic bearings linearized model parameters analyzed by finite element computation. IEEE Transactions on Magnetics, 44(6):1534–1537, 2008. doi: 10.1109/TMAG.2007.916650.
[14] B. Tomczuk and D. Koteras. 3D Field Analysis in 3-phase amorphous modular transformer under increased frequency operation. Archives of Electrical Engineering, 64(1):119–127, 2015. doi: 10.1515/aee-2015-0011.
[15] Z. Badics and Z.J. Cendes. Source field modeling by mesh incidence matrices. IEEE Transactions on Magnetics, 43(4):1241–1244, 2007. doi: 10.1109/TMAG.2006.890967.
[16] D. Wajnert and B. Tomczuk. Simulation for the determination of the hybrid magnetic bearing’s electromagnetic parameters. Przegląd Elektrotechniczny, 93(2):157–160, 2017. http://pe.org.pl/articles/2017/2/34.pdf.
[17] A. Mystkowski. Energy saving robust control of active magnetic bearings in flywheel. Acta Mechanica et Automatica, 6(3):72–76, 2012.
[18] A. Piłat. PD control strategy for 3 coils AMB. In Proceedings of the 10th International Symposium on Magnetic Bearing, pages 34–39, Martigny, Switzerland, August 21–23, 2006.
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[20] S. Myburgh, G. von Schoor, and E. O. Ranft. A non-linear simulation model of an active magnetic bearings supported rotor system. In Proceedings of The XIX International Conference on Electrical Machines (ICEM 2010), pages 1–6, Rome, Italy, 6–8 September 2010. doi: 10.1109/ICELMACH.2010.5607982.
[21] Z. Gosiewski and A. Mystkowski. Robust control of active magnetic suspension: Analytical and experimental results. Mechanical Systems and Signal Processing, 22(6):1297–1303, 2008. doi: 10.1016/j.ymssp.2007.08.005.
[22] A. Mystkowski. Robust control of vibration of the magnetically suspended rotor. Ph.D. Thesis, AGH University of Science and Technology, Cracow, Poland, 2007 (in Polish).
[23] A. Piłat. Control of magnetic levitation systems. Ph.D. Thesis, AGH University of Science and Technology, Cracow, Poland, 2002 (in Polish).
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[25] K. Falkowski. The development of the laboratory model of the gyroscope with the magnetically levitating rotor and its research. Ph.D. Thesis, Warsaw University of Technology, Warsaw, Poland, 1999 (in Polish).
[26] G.F. Franklin, J.D. Powell and A. Emami-Naeini. Feedback control of dynamic systems. Prentice Hall, 2002.
[27] S. Szymaniec. “Measurement paths” used to measure relative vibrations in electric machines. Zeszyty Problemowe – Maszyny Elektryczne, 81:55–60, 2009 (in Polish).
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Authors and Affiliations

Dawid Wajnert
1

  1. Opole University of Technology, Department of Electrical Engineering and Mechatronics, Opole, Poland.
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Abstract

Surface Acoustic Wave (SAW) devices like delay lines, filters, resonators etc., are nowadays extensively used as principal solid state components in many electronic applications and chemical vapour sensors. To bring out the best from these SAW devices, computational design and modelling are resorted too. The present paper proposes the modelling of 400 MHz ST-X Quartz based SAW delay line, by three models namely, Impulse Response Model (IRM), Crossed-field Equivalent Circuit Model (ECM) and Couplingof- Modes (COM) model. MATLABr is employed as a computational tool to model the experimental output of the SAW device. A comparative discussion of the modelled device results is also provided.
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Authors and Affiliations

Thirumal Venkatesan
Haresh M. Pandya
Raju Banupriya
Gandhi Pandiyarajan
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Abstract

The paper presents an approach to differential equation solutions for the stiff problem. The method of using the classic transformer model to study nonlinear steady states and to determine the current pulses appearing when the transformer is turned on is given. Moreover, the stiffness of nonlinear ordinary differential state equations has to be considered. This paper compares Runge–Kutta implicit methods for the solution of this stiff problem.
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Authors and Affiliations

Bernard Baron
1
ORCID: ORCID
Joanna Kolańska-Płuska
1
ORCID: ORCID
Marian Łukaniszyn
1
ORCID: ORCID
Dariusz Spałek
2
ORCID: ORCID
Tomasz Kraszewski
3
ORCID: ORCID

  1. Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland
  2. Institute of Electrotechnics and Informatics, Silesian University of Technology, 10 Akademicka St., 44-100 Gliwice, Poland
  3. Research and Development Center GLOKOR Sp. z o.o., Górnych Wałów 27A St., 44-100 Gliwice, Poland
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Abstract

In recent years, fractional slot concentrated winding permanent magnet synchronous motors (FSCW PMSMs) have become a hotspot in the research field. Due to the unique inductance characteristics of the FSCW PMSM, a fast and accurate calculation of the d/q-axis inductance and saliency ratio is necessary. In this paper, a method is proposed to calculate the d/q-axis reactance of the FSCW SPMSM, which constructs the equivalent magnetic circuit model of the d/q-axis armature reaction flux separately, and the saliency ratio characteristics of the FSCW SPMSM were demonstrated. In addition, to meet the high requirements of the modern industries, especially in servo systems, accurate consideration of the effect of stator resistance on torque and electromagnetic performance is important and more applicable. According to the relationship between the vector parameter, the explicit expression of the d/q-axis currents that consider the stator resistance is obtained, and the prediction of load angle at maximum electromagnetic torque is achieved. Then, combined with the finite element method, the influence mechanism of stator resistance on the motor steady-state performance is revealed. Finally, the experimental data are compared with the calculation data, and the correctness of the models and analysis was verified.
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Authors and Affiliations

Hongbo Qiu
1
Dong Wang
1
Cunxiang Yang
1
Kun Wang
1
ORCID: ORCID

  1. Zhengzhou University of Light Industry Zhengzhou, Henan, China
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Abstract

A contactless energy transmission system is essential to supply onboard systems of electromagnetically levitated vehicles without physical contact to the guide rail. One of the possibilities to realise a contactless power supply (CPS) is by integrating the primary actuator into the guide rail of an electromagnetic guiding system (MGS). The secondary actuator is mounted on the elevator car. During the energy transmission, load dependent non-linear losses occur in the guide rail. The additional losses, which are caused by the leakage flux penetrating into the guide rail, cannot be modelled using the classical approach of iron losses in the equivalent circuit of a transformer, which is a constant parallel resistance to the mutual inductance. This paper introduces an approach for modelling the load dependent non-linear losses occurring in the guide rail using additional variable discrete circuit elements.

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Authors and Affiliations

Aryanti Kusuma Putri
Rüdiger Appunn
Kay Hameyer
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Abstract

Dynamic characteristics for three types of railgun constructions were simulated and measured in this work. The simplest construction is the iron-less (IL) railgun, while the two other ones (IC and ICPM) have an iron-core. The iron-core permanent magnet (ICPM) railgun additionally has permanent magnets. To compare their characteristics, similar dimensions of the rails and iron cores were adopted, and the same power supply system was used. Numerical magnetic field analyses and our analytical models have been used to determine the electromagnetic parameters. They were verified experimentally. The transient states of the railguns were studied with our field-circuit mathematical model, and their results were also verified by experiments.
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Authors and Affiliations

Paweł Piekielny
1
ORCID: ORCID
Bronisław Tomczuk
1
ORCID: ORCID
Andrzej Waindok
1
ORCID: ORCID

  1. Department of Electrical Engineering and Mechatronics, Opole University of Technology, Prószkowska 76 str., 45-758 Opole, Poland

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