Electromechanical Battery EMB Mass Minimization taking into Account its Electrical Machines Rotor Energy
DOI:
https://doi.org/10.1515/ecce-2014-0017Keywords:
Flywheels, Minimization methods, Approximation algorithms, Numerical simulation, Design optimizationAbstract
In this paper the electromechanical battery (EMB) with synchronous machine is described. Theoretically, if electrical machines rotor stored energy is known, it is possible to reduce the flywheel mass of electromechanical battery. For example, the efficiency of energy recovery (kilowatt-hours out versus kilowatthours in) in nowadays appliances exceeds 95 % which is considerably better than of any electrochemical battery, such as lead-acid battery. For the rotor stored energy amount calculation, it is necessary to find all geometrical dimensions of the electrical machine. To achieve this goal the iterative calculation method was used. Electromechanical battery mass was analyzed as a discharge process rotation speed function. Taking into account the rotor stored energy, we can increase the minimum rotation speed thus reducing the electrical machine mass and increasing the flywheel mass, which provides EMB cost reduction. Additionally, the possibilities of using numerical approximation calculations of magnetization curves are discussed. Each iteration of numerical application necessary for the method for rapid calculation is essential when calculating the field problems. Nowadays there are a lot of computer added design programs for electromagnetic field calculation in different types of applications, electrical machines and apparatus. For the electromagnetic field calculation process some more commonly used magnetization curve approximation methods are described, and the machine calculation time is tested for different numbers of calculations.References
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D. A. But, B. L. Alievsy, S. R. Mizurin and P. V. Vasyukevich, Energy storages systems, Мoscow: Energoatomizdat, 1991, p. 400.
M. N. Anwar, I. Husain and A. V. Radun, “A Comprehensive Design Methodology for Switched Reluctance Machines,” IEEE transactions on industry applications, vol. 37, no. 6, nov./dec. 2001, pp. 1687-1692. http://dx.doi.org/10.1109/28.968179
O. D. Golberg, J. S. Gurin and I. S. Sviridenko, Proektirovanie električeskih mašin: Učebnik lja vtuzov, Moscow: Vishaja Škola, 1984, p. 431.
L. A. Bessonov, Electrical Engineering fundamentals, Мoscow: Vishaja shkola, 1996, p. 638.
V. V. Nosach, An approximation exercises with personal computers, Мoscow: MIKAP, 1994, p. 382. ISBN 5-85959-067-9
A. Zviedris, Optimisation of electromagnetic system devices. Lectures, Riga: RTU, 2004, p. 46.
A. Zviedris, Mathematical methods for personal computer. Lectures, Riga: RTU, 2004, p. 78.
A. Podgornovs, A. Mesnajevs and A. Zviedris, “Determination Of Synchronous Machine’s Characteristics Based On The Results Of The Mathematical Modelling Of The Magnetic Field,” European Conference on Modelling and Simulation, 2011, Poland, ISBN: 978-0-9564944-2-9
A. Podgornovs and A. Sipovičs, “Electromechanical Battery, Electrical Machines Mass Functions Analysis,” RTU zinātniskie raksti. Enerģētika un elektrotehnika, 4. sēr., 29. sēj., 2011, 53.-57. lpp.
S. Orlova, V. Pugačevs, M. Koņuhova and N. Levins, “Non-Overlapping Concentrated Windings in Homopolar Inductor Machines,” Int. Symp. on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2010: Conference Proceedings, Italy, Pisa, 14-16 June, 2010, pp. 282-286.
M. Koņuhova, K. Ketners, E. Ketnere and S. Zimina, “Investigations of the Undamped Field Effect to the Electromagnetic Processes in the Induction Machines,” Enerģētika un elektrotehnika, Latvia, Rīga, 14-16 Oct., 2009, pp. 47-50.
A. Ruddell, “Investigation on Storage Technologies for Intermittent Renewable Energies: Evaluation and Recommended R&D strategy,” CCLRC Rutherford Appleton Laboratory, WP Report: Storage Technology ST6: Flywheel, Project funded by European Community under the 5th Framework Programme (1998-2002).
H. Akagi and H. Sato, “Control and performance of a doubly-fed induction machine intended for a flywheel energy storage system,” IEEE Transactions on Power Electronics, vol. 17, no. 1, ISSN 0885-8993
J. Cibulka, “Kinetic Energy Recovery System by means of flywheel energy storage,” Advanced Engineering, vol. 3, no. 1, 2009, ISSN 1846-5900
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2014-12-01
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Copyright (c) 2014 Andrejs Podgornovs, Antons Sipovichs (Author)
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Podgornovs, A., & Sipovichs, A. (2014). Electromechanical Battery EMB Mass Minimization taking into Account its Electrical Machines Rotor Energy. Electrical, Control and Communication Engineering, 7(1), 5-10. https://doi.org/10.1515/ecce-2014-0017
