Improvement of the model of power losses in the pulsed current traction motor in an electric locomotive
| Autor: | Sergey Goolak, Svitlana Sapronova, Viktor Tkachenko, Ievgen Riabov, Yevhenii Batrak |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
020209 energy 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology engineering.material Industrial and Manufacturing Engineering Traction motor law.invention law Management of Technology and Innovation 021105 building & construction 0202 electrical engineering electronic engineering information engineering Eddy current T1-995 Industry Electrical and Electronic Engineering Technology (General) Applied Mathematics Mechanical Engineering eddy currents Mechanics Coercivity HD2321-4730.9 equipment and supplies Computer Science Applications Magnetic field Magnetic circuit traction motor Hysteresis hysteresis universal magnetic characteristic Control and Systems Engineering Magnet engineering magnetic losses human activities Electrical steel |
| Zdroj: | Eastern-European Journal of Enterprise Technologies, Vol 6, Iss 5 (108), Pp 38-46 (2020) |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2020.218542 |
| Popis: | When studying transients in pulsed current traction motors, it is important to take into consideration the eddy and hysteresis losses in engine steel. Magnetic losses are a function of the magnetization reversal frequency, which, in turn, is a function of the engine shaft rotation frequency. In other words, magnetic losses are a function of time. Existing calculation procedures do not make it possible to derive the instantaneous values of magnetic losses as they are based on determining average losses over a period. This paper proposes an improved model of magnetic losses in the steel of a pulsed current traction motor as a function of time, based on the equations of specific losses. The adequacy criteria of the procedure for determining magnetic losses in electrical steel have been substantiated: the possibility to derive instantaneous values of magnetic losses in the magnetic material as a function of time; the possibility of its application for any magnetic material; and the simplicity of implementation. The procedure for determining magnetic losses in the steel of a pulsed current traction motor has been adapted by taking into consideration the magnetic properties of steel and the geometry of the engine's magnetic circuit. In order to determine the coercive force, the coefficient of accounting for the losses due to eddy currents, as well as the coefficient that considers the losses on hysteresis, the specifications' characteristics of specific losses in steel have been approximated using the pulsed current traction motor as an example. The simulated model of magnetic losses by the pulsed current traction motor has demonstrated the procedure for determining average magnetic losses and time diagrams of magnetic losses. The proposed model for determining magnetic losses could be used for any magnetic material and any engine geometry under the condition of known material properties and the characteristics of change in the magnetic flux density in geometry |
| Databáze: | OpenAIRE |
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