Mathematical modeling of an induction motor for vehicles

Goolak, Sergey; Gubarevych, Oleg; Yermolenko, Eduard; Slobodyanyuk, Maxim; Gorobchenko, Oleksandr

doi:10.15587/1729-4061.2020.199559

Cited by 21 publications

(21 citation statements)

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“…To determine the main indicators of the strength of the load-bearing structure of the hopper wagon, taking into account the use of various types of bogies, a calculation was carried out. In this case, the finite element method was used, which is implemented in the SolidWorks Simulation (CosmosWorks) software package [16][17][18][19]. When compiling the finite element model, spatial tetrahedrons were used [20][21][22][23][24].…”

Section: Results Of Determining the Strength Indicators Of The Load-bmentioning

confidence: 99%

Study of Loading of the Load-Bearing Structure of Hopper Wagons on Y25 Bogies

et al. 2021

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To increase the efficiency of using railway transport, the possibility of using new designs of bogies, for example, Y25 under "wide gauge" wagons was considered. In order to substantiate the proposed solution, mathematical modeling of the dynamic loading of the hopper wagon Y25 bogies was carried out. A hopper wagon for the transportation of pellets and hot sinter model 20-9749 built by the State Enterprise "Ukrspetsvagon" (Ukraine) was chosen as a prototype. The simulation results showed that the use of Y25 bogies for hopper wagons allows to reduce the acceleration of its load-bearing structure, in comparison with the use of conventional 18100 bogies, by 36 %. Other performance indicators are also significantly improved. The use of Y25 bogies for hopper wagons with actual parameters allows to reduce the acceleration of its load-bearing structure, in comparison with the use of conventional 18100 bogies, by 28 %. The determination of the main indicators of the strength of the bearing structure of the hopper wagon Y25 bogie was carried out. The calculation was carried out in the SolidWorks Simulation software package (CosmosWorks), (France), which implements the finite element method. The calculations showed that the maximum equivalent stresses in the load-bearing structure of a hopper wagon with nominal parameters are 17 % lower than the stress acting in the load-bearing structure of a wagon on bogies 18–100 V of the load-bearing structure of a hopper wagon with actual parameters, the maximum equivalent stresses are 12 % lower per voltage in the load-bearing structure on bogies 18100. The conducted research will help to reduce the load on the load-bearing structures of hopper wagons in operation, improve the dynamics and strength indicators, as well as their service life

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Section: Results Of Determining the Strength Indicators Of The Load-bmentioning

confidence: 99%

Study of Loading of the Load-Bearing Structure of Hopper Wagons on Y25 Bogies

et al. 2021

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“…When solving the mathematical model, the mass of the load-bearing body structure was taken into consideration accounting for the removable roof. The system of differential equations ( 7) was solved using the Mathcad software package [21][22][23] in the form: =  . The initial movements and speeds were set to zero [24][25][26]:…”

Section: Determining the Dynamic Load On The Bearing Structure Of A Railroad Gondola With A Removable Roofmentioning

confidence: 99%

Justification of the use of square pipes in the frame of the removable roof of the open wagon

Fomin

Lovska

2021

EEJET

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This paper reports determining the basic strength indicators for the removable roof of a railroad gondola. It has been established that the typical roof design has a significant margin of safety in the components of the supporting structure. In order to reduce the roof material intensity, the reserves of its strength have been determined and optimized based on the criterion for minimal material intensity. Pipes of square cross-section have been proposed for using as the components of the roof frame. When taking into consideration the proposed measures, it becomes possible to reduce the mass of the frame of the removable roof for a railroad gondola by almost 15 % compared to the typical design. At the same time, to apply the roof on different types of gondolas, its cantilevered parts can move in a longitudinal plane. It is possible to use deflectors on the removable roof. The roof can be attached to the body in a regular way. It is also possible to fix it using shog-connections. To substantiate the proposed solution, the strength of the improved structure of the removable roof was determined. It was established that the maximum equivalent stresses in the load-bearing structure of the removable roof did not exceed permissible ones. To define the indicators of removable roof dynamics, its dynamic loading was investigated. The calculation was performed in a flat coordinate system. The oscillations in bouncing and galloping were taken into consideration as the most common types of a railroad car oscillations when running on a rail track. The mathematical model of dynamic loading was solved in the Mathcad software package (Boston, USA). The study has shown that the acceleration of the body in the center of masses is 0.4 g and is within the permissible limits. At the same time, the ride of a railroad car is excellent. The study reported here would contribute to the improvement of the efficiency of railroad transportation.

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“…The calculation results are given in Table 1. Table 1 Results of calculating the NB-418-K6 motor parameters Parameter Parameter value Armature yoke intersection area -S Y , cm 2 810 Armature teeth intersection area -S z , cm 2 415 Armature yoke volume -V Y , cm 3 1,751.3 Armature teeth volume -V z , cm 3 12,150 Armature rated current -І а , А 820 Pole pairs' number -р 3 Pair quantity of armature winding parallel branches -а 3…”

Section: The Study Object and Subjectmentioning

confidence: 99%

“…Existing models of induction motors have a separate magnetization circuit. With this chain, magnetic processes in the induction motor could be investigated separately, in particular, magnetic losses, as reported in [3,4]. Unlike the induction motor, there is no separate magnetization circuit in the existing models of pulsed current motors, making it difficult to investigate magnetic processes.…”

Section: Introductionmentioning

confidence: 99%