Complete and accurate modular numerical computation scheme for multi‐coupled electric drive systems

Nell, Martin; Leuning, Nora; Mönninghoff, Sebastian; Groschup, Benedikt; Müller, Fabian; Karthaus, Jan; Jaeger, Markus; Schröder, Michael; Hameyer, Kay

doi:10.1049/iet-smt.2019.0413

Cited by 8 publications

(5 citation statements)

References 45 publications

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“…The first calculation method of the IM considered in this paper is the numerical two-dimensional (2D) transient FE method (T-FEM). The method is described in von Pfingsten et al (2017), and the approach to calculate the entire operating range of the IM using the FEM is depicted in Nell et al (2019a, 2019b) and von Pfingsten et al (2018).…”

Section: Used Electromagnetic Models Of the Induction Machinementioning

confidence: 99%

Analysis of methods and approaches of the electromagnetic calculation of induction machines regarding their use to solve multiphysical problems

Nell

Franck

Hameyer

2022

COMPEL

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Purpose For the electromagnetic simulation of electrical machines, models with different ranges of values, levels of detail and accuracies are used. In this paper, numerical and two analytical models of an induction machine (IM) are analysed with respect to these aspects. The purpose of the paper is to use these analyses to discuss the suitability of the models for the simulation of various physical quantities of an IM. Design/methodology/approach An exemplary IM is simulated using the two-dimensional numerical finite element method, an analytical harmonic wave model (HWM) and an extended HWM. The simulation results are analyzed among themselves in terms of their level of detail and accuracy. Furthermore, the results of operating map simulations are compared with measured operating maps of the exemplary machine, and the accuracy of the simulation approaches is discussed in the context of measurement deviations and uncertainties. Findings The difference in the accuracy of the machine models depends on the physical quantity of interest. Therefore, the choice of the simulation method depends on the nature of the problem and the expected range of results. For modeling global machine quantities, such as mean torque or losses, analytical methods such as the HWM s are sufficient in many applications because the simulation results are within the range of measurement accuracy of current measurement systems. Analytical methods are also suitable for local flux density curves under certain conditions. However, for the simulation of the influence of local physical effects on the machine behavior and of temporally highly resolved quantities in saturated operating points, the accuracy of the analytical models decreases and the use of the finite element method becomes necessary. Originality/value In this paper, an extension of the HWM is used to calculate the IM, which, in contrast to the HWM, models the saturation. Furthermore, the simulation results of the different electromagnetic IM models are put into the context of the uncertainty of a measurement of several identical IMs.

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Section: Used Electromagnetic Models Of the Induction Machinementioning

confidence: 99%

Analysis of methods and approaches of the electromagnetic calculation of induction machines regarding their use to solve multiphysical problems

Nell

Franck

Hameyer

2022

COMPEL

Self Cite

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“…The relation between the number of surface grains to the number of inner grains is described by the scale factor η in Equation ( 23) [61]. Combining Equations ( 20)- (23), Equation (24) follows for the flow stress of the material according to the surface model.…”

Section: Description Of the Surface Modelmentioning

confidence: 99%

“…The proposed model can portray crossings of magnetization curves and can easily be implemented in finite-element magnetic field and flux simulations. In [23,68], it is described how magnetization curves can be reformulated to describe the reluctivity. With this, electromagnetic problems can be solved by means of the vector potential.…”

Section: Texture Model To Describe the Magnetic Anisotropy Of Non-oriented Electrical Steelmentioning

confidence: 99%

“…The requirement however is a thorough understanding of the dominant effects between the material properties and dominantly affected magnetic properties. There are semi-physical models for the description of the magnetization behavior and magnetic loss [23]. In previous work, the dominant material parameters for the magnetization and loss characteristic have been studied.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Process Simulation of Non-Oriented Electrical Steel

et al. 2021

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A tailor-made microstructure, especially regarding grain size and texture, improves the magnetic properties of non-oriented electrical steels. One way to adjust the microstructure is to control the production and processing in great detail. Simulation and modeling approaches can help to evaluate the impact of different process parameters and finally select them appropriately. We present individual model approaches for hot rolling, cold rolling, annealing and shear cutting and aim to connect the models to account for the complex interrelationships between the process steps. A layer model combined with a microstructure model describes the grain size evolution during hot rolling. The crystal plasticity finite-element method (CPFEM) predicts the cold-rolling texture. Grain size and texture evolution during annealing is captured by the level-set method and the heat treatment model GraGLeS2D+. The impact of different grain sizes across the sheet thickness on residual stress state is evaluated by the surface model. All models take heterogeneous microstructures across the sheet thickness into account. Furthermore, a relationship is established between process and material parameters and magnetic properties. The basic mathematical principles of the models are explained and demonstrated using laboratory experiments on a non-oriented electrical steel with 3.16 wt.% Si as an example.

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“…Examples of models, methods, and physical effects considered for solving multiphysics problems in the field of electrical machines are explained in [2]. There, a modular computational approach for the calculation, simulation, and design of electrical machines is presented, which has been and is being applied in several scientific papers.…”

Section: Introductionmentioning

confidence: 99%

Approach for the Model and Parameter Selection for the Calculation of Induction Machines

2021

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The solution of multiphysical problems in the field of electrical machines is a complex task that involves the modeling of a wide variety of coupled physical domains. Different types of models and solution methods can be used to model and solve the individual domains. In this paper a procedure for the methodical selection of the most suitable model for a given multiphysics task is presented. Furthermore, an approach for the selection of the most suitable variable machine parameters for a design optimization is presented. The model selection is presented on the basis of the electromagnetic calculation of an induction machine. For this purpose, models of different value ranges and levels of detail, such as analytical and numerical ones, are considered. The approach of the model selection is explained and applied on the basis of a coupled electromagnetic-thermal simulation of an exemplary induction machine. The results show that the model selection presented here can be used to methodically determine the most suitable model in terms of its value range, level of detail and computational effort for a given multiphysical problem.

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Complete and accurate modular numerical computation scheme for multi‐coupled electric drive systems

Cited by 8 publications

References 45 publications

Analysis of methods and approaches of the electromagnetic calculation of induction machines regarding their use to solve multiphysical problems

Analysis of methods and approaches of the electromagnetic calculation of induction machines regarding their use to solve multiphysical problems

Integrated Process Simulation of Non-Oriented Electrical Steel

Approach for the Model and Parameter Selection for the Calculation of Induction Machines

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