Hybrid Model: Permeance Network and 3-D Finite Element for Modeling Claw-Pole Synchronous Machines

Devornique, Geoffrey; Fontchastagner, Julien; Netter, Denis; Takorabet, Noureddine

doi:10.1109/tmag.2017.2657890

Cited by 17 publications

(4 citation statements)

References 9 publications

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“…Brushes and segments are connected to the other parts of electrical circuit using circuit paths. At the end, the circuit unknowns and the electric potential are strongly coupled through the weak formulation (2), derived from that presented in Reference 11.

\begin{array}{l} Find v_{b}, ([], I_{c}) such that : \forall v_{b}^{'} \in H_{0}^{1}, \forall ([], I_{c}^{'}) \in R^{n_{c}}, \\ ({, \begin{array}{l} {(σ (θ) grad v_{b}, grad v_{b}^{'})}_{{normalΩ}_{c}} goodbreak- {⟨j \cdot n, v_{b}^{'}⟩}_{\partial Ω_{c}} goodbreak= 0 \\ {(([], U_{c}), ([], I_{c}^{'}))}_{{normalΩ}_{italiccirc}} goodbreak+ {([R] [I_{c}], ([], I_{c}^{'}))}_{{normalΩ}_{italiccirc}} goodbreak= 0 \\ {⟨j \cdot n, v_{b}^{'}⟩}_{\partial Ω_{c}} goodbreak= {⟨I_{c, k}, v_{b}^{'}⟩}_{\partial Ω_{c}}, \forall k \in ([],, 1, n_{c}) \\ ((), n_{c} : number of circuit interface connections) \end{array}) \end{array}

…”

Section: Interest Of the Coupled Approach For DC Machine Commutator M...mentioning

confidence: 99%

“…The weak form associated with this problem is expressed in (3), derived from Reference 11.

\{\begin{matrix} left \\ Find v_{b} \in H_{0}^{1} and [I_{c}] \in {normalℝ}^{n_{b}} such as : \\ {((),, σ ((), θ) boldgrad v_{b}, boldgrad v_{b}^{'})}_{Ω_{c}} - {((),, boldj \cdot boldn, v_{b}^{'})}_{\partial {normalΩ}_{c}} = 0 \\ {((),, [U_{c}], [I_{c}^{'}])}_{Ω_{circ}} + {((),, ([], R) ([], I_{c}), [I_{c}^{'}])}_{Ω_{circ}} = 0 \\ {((),, boldj \cdot boldn, {boldv}_{boldb}^{'})}_{\partial {normalΩ}_{c}} = {((),, {boldI}_{c, k}, {boldv}_{boldb}^{'})}_{\partial {normalΩ}_{c}}, \forall k \in [1, n_{c}] \\ \forall v_{b}^{'} \in H_{0}^{1} and \forall [I_{c}^{'}] \in {normalℝ}^{n_{b}} \\ with n_{c} : number of circuit interface connections \\ with n_{b} : number of circuit branches \end{matrix}

…”

Section: Claw Pole Machinementioning

confidence: 99%

See 1 more Smart Citation

Level‐set‐based method for designing novel brushed synchronous machines

Ristagno

Devornique

Giraud

et al. 2023

Int J Numerical Modelling

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Nowadays, research on electromagnetic devices increasingly focuses on multiphysics three‐dimensional complex systems. However, this kind of simulations require huge computational resources and consequently very high CPU time. Ristagno et al. proposed a level‐set based method allowing meshing step savings in any iterative processes (as movement modeling or optimization processes). The level‐set method lies in implicit description of moving fronts as described in the study by Osher et al. (1988). Inspired by Räisänen et al., all physical parameters (material properties, supply or armature movement) are implemented by projection of mathematical functions. In this paper, the authors proposes to study and design a new kind of mechanical commutator for DC machines thanks to this coupled method. Indeed, there is a renewed interest in DC machines because they can be suitable for small mobilities. To be noted, small mobility concerns all kind of vehicles (2 wheels–4 wheels–autonomous vehicles such as drones) that have speeds below 50 km/h. However, specifications for traction applications are difficult to achieve for such a rustic machine and requires some modifications. That is why, inspired by usual synchronous machine, the commutator has been redesigned to obtain expected theoretically signal waveform. Furthermore, numerical coupled simulations have been used to design both machine and supply simultaneously. This work has led to the manufacture of a proof of concept and preliminary results are very promising.

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\begin{array}{l} Find v_{b}, ([], I_{c}) such that : \forall v_{b}^{'} \in H_{0}^{1}, \forall ([], I_{c}^{'}) \in R^{n_{c}}, \\ ({, \begin{array}{l} {(σ (θ) grad v_{b}, grad v_{b}^{'})}_{{normalΩ}_{c}} goodbreak- {⟨j \cdot n, v_{b}^{'}⟩}_{\partial Ω_{c}} goodbreak= 0 \\ {(([], U_{c}), ([], I_{c}^{'}))}_{{normalΩ}_{italiccirc}} goodbreak+ {([R] [I_{c}], ([], I_{c}^{'}))}_{{normalΩ}_{italiccirc}} goodbreak= 0 \\ {⟨j \cdot n, v_{b}^{'}⟩}_{\partial Ω_{c}} goodbreak= {⟨I_{c, k}, v_{b}^{'}⟩}_{\partial Ω_{c}}, \forall k \in ([],, 1, n_{c}) \\ ((), n_{c} : number of circuit interface connections) \end{array}) \end{array}

…”

Section: Interest Of the Coupled Approach For DC Machine Commutator M...mentioning

confidence: 99%

“…The weak form associated with this problem is expressed in (3), derived from Reference 11.

\{\begin{matrix} left \\ Find v_{b} \in H_{0}^{1} and [I_{c}] \in {normalℝ}^{n_{b}} such as : \\ {((),, σ ((), θ) boldgrad v_{b}, boldgrad v_{b}^{'})}_{Ω_{c}} - {((),, boldj \cdot boldn, v_{b}^{'})}_{\partial {normalΩ}_{c}} = 0 \\ {((),, [U_{c}], [I_{c}^{'}])}_{Ω_{circ}} + {((),, ([], R) ([], I_{c}), [I_{c}^{'}])}_{Ω_{circ}} = 0 \\ {((),, boldj \cdot boldn, {boldv}_{boldb}^{'})}_{\partial {normalΩ}_{c}} = {((),, {boldI}_{c, k}, {boldv}_{boldb}^{'})}_{\partial {normalΩ}_{c}}, \forall k \in [1, n_{c}] \\ \forall v_{b}^{'} \in H_{0}^{1} and \forall [I_{c}^{'}] \in {normalℝ}^{n_{b}} \\ with n_{c} : number of circuit interface connections \\ with n_{b} : number of circuit branches \end{matrix}

…”

Section: Claw Pole Machinementioning

confidence: 99%

Level‐set‐based method for designing novel brushed synchronous machines

Ristagno

Devornique

Giraud

et al. 2023

Int J Numerical Modelling

Self Cite

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show abstract

“…In the past decades, many kinds of new HESM topologies have proposed and studied, which are mainly focused on the claw-pole type [8][9][10], the parallel type [11][12][13], rotor magnetic shunt type [14,15], and the combined rotor type [16], and most of them are used in generator systems. However, there are two main problems in these types of HSEMs.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Magnetic Field and Electromagnetic Performance of a New Hybrid Excitation Synchronous Motor with dual-V type Magnets

Zhang

Yin

et al. 2020

Energies

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Due to the increasing energy crisis and environmental pollution, the development of drive motors for new energy vehicles (NEVs) has become the focus of popular attention. To improve the sine of the air-gap flux density and flux regulation capacity of drive motors, a new hybrid excitation synchronous motor (HESM) has been proposed. The HESM adopts a salient pole rotor with built-in dual-V permanent magnets (PMs), non-arc pole shoes and excitation windings. The fundamental topology, operating principle and analytical model for a magnetic field are presented. In the analytical model, the rotor magnetomotive force (MMF) is derived based on the minimum reluctance principle, and the permeance function considering a non-uniform air-gap is calculated using the magnetic equivalent circuit (MEC) method. Besides, the electromagnetic performance including the air-gap magnetic field and flux regulation capacity is analyzed by the finite element method (FEM). The simulation results of the air-gap magnetic field are consistent with the analytical results. The experiment and simulation results of the performance show that the flux waveform is sinusoidal-shaped and the air-gap flux can be adjusted effectively by changing the excitation current. This study provides design methods and theoretical analysis references for this type of HESM.

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“…Therefore, FEM does not seem suitable in 3D optimization processes. In literature, several modeling methods, such as hybrid models which combine finite element and reluctance network, have been suggested in order to reduce simulation time Devornique et al (2017). In this article, the authors propose a method allowing meshing step saving in any iterative process such as movement modeling.…”

Section: Introductionmentioning

confidence: 99%

FEM using projection of physical properties suitable for movement modeling and optimization processes

Ristagno

Giraud

Fontchastagner

et al. 2020

COMPEL

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Purpose Optimization processes and movement modeling usually require a high number of simulations. The purpose of this paper is to reduce global central processing unit (CPU) time by decreasing each evaluation time. Design Methodology Approach Remeshing the geometry at each iteration is avoided in the proposed method. The idea consists in using a fixed mesh on which functions are projected to represent geometry and supply. Findings Results are very promising. CPU time is reduced for three dimensional problems by almost a factor two, keeping a low relative deviation from usual methods. CPU time saving is performed by avoiding meshing step and also by a better initialization of iterative resolution. Optimization, movement modeling and transient-state simulation are very efficient and give same results as usual finite element method. Research Limitations Implications The method is restricted to simple geometry owing to the difficulty of finding spatial mathematical function describing the geometry. Moreover, a compromise between imprecision, caused by the boundary evaluation, and time saving must be found. Originality Value The method can be applied to optimize rotating machines design. Moreover, movement modeling is performed by shifting functions corresponding to moving parts.

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Hybrid Model: Permeance Network and 3-D Finite Element for Modeling Claw-Pole Synchronous Machines

Cited by 17 publications

References 9 publications

Level‐set‐based method for designing novel brushed synchronous machines

Level‐set‐based method for designing novel brushed synchronous machines

Analysis of Magnetic Field and Electromagnetic Performance of a New Hybrid Excitation Synchronous Motor with dual-V type Magnets

FEM using projection of physical properties suitable for movement modeling and optimization processes

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