2015 20 01_eomys engineering_1_en

EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE

EOMYS ENGINEERING Outsourced research & development services

LE BESNERAIS Jean

03/03/[email protected]

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EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 2

I. PRESENTATION

*"Jeune Entreprise Innovante": the French government recognises that EOMYS runs significant R&D activities

• Young Innovative Company* created in may 2013

• Located in Lille, North of France

• Activities : engineering consultancy & research specialized in electrical engineering

• Sectors : transportation (railway, automotive, marine, aeronautics), energy (wind, hydro), industry


II. VISION

A global approach of engineering and applied research dedicated to innovation:

Laboratory experience (PhD)

EOMYS ENGINEERING

Scientific watch

Creativity

Abstract thinking

Industrial experience

International collaborations

Long-term solutions

Mathematics, computing

Short-term solutions

Pragmatism

“Hands-on”

Survey of industrial needs

Local laboratory partnerships

Electrical engineering, thermics, mechanics

Engineering consultancy & Applied research


• Laboratory partnerships:

- Laboratory of Power Electronics and Electrical Engineering of Lille (L2EP)

- Laboratory of Electrotechnical Systems and their Environment (LSEE)

- Laboratory of Electromechanics of Compiègne (LEC)

- Laboratory of Fluid Dynamics & Heat Transfer of Valenciennes (TEMPO)

• Industrial networks:

- Motors & Electrical Devices for Energy Efficiency (MEDEE)

- R&D in automotive and public tranports (MOVEO)

- Innovative Transportation Systems (ITRANS)

• Financial partners :

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III. SERVICESAnalyze your system and solve your technical issues• multiphysics experiments (investigation, pre-certification)

and simulations• advanced post-processings of experimental and simulation

data• sensitivity studies, technical state of the art• proposal of technical solutions and validation by tests or

simulation

Develop your design processes• development, validation and integration of more accurate /

faster models• development of user-specific design interfaces• formalization of design rules• delivery of high-level technical trainings

Optimize your products and processes• coupling with multiobjective constrained optimization

methods• automation of the design process• optimization of the “virtual prototyping” chain

Innovate• technical state of the art, ideation, concept ranking and

validation• research consortium / co-development projects

EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE

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Optimal design of electrotechnical systems permanent magnet synchronous wind generators, traction induction machines transformers and inductors

Scientific software development and applied mathematics use of open sources (FEMM, GetDP, OpenFoam, Octave) & commercial software (Flux,

Opera, Ansys, Matlab) advanced optimization methods (multiobjective constrained genetic algorithms, space-

mapping)

Analytical, semi-analytical and numerical modelling CFD simulation coupled to thermal nodal networks, hydraulic networks electromagnetic subdomain models, reluctance network models structural beam element models

Experimental measurements noise and vibration measurements thermal and electrical measurements

IV. EXPERIENCE


V. ADVANTAGESA single partner all along your R&D project mathematical modelling numerical simulation software development tests & measurements

A strong culture of innovation technical publications, patents research partnerships

A responsive team with multidisciplinary skills electromagnetics, thermics, fluid mechanics, vibro-acoustics applied mathematics and scientific computing

A complete and secure know-how transfer to your company delivery of numerical models extensive documentation training of your engineers


VI. R&D INTERNAL RESEARCH PROGRAMMEReduction of noise & vibration in electromechanical systems noise reduction techniques in rotating electrical machines and passive components 3D electro-vibro-acoustic simulation of rotating machines (asymmetries, skewing) modeling of magnetic forces in rotating machines magnetostriction and Maxwell force modeling in passive components (GetDP) development of hybrid simulation methods (FEM / semi-analytic)


A1. Vibro-acoustic characterizationCalculation of noise & vibration due to electromagnetic forces• magnetostriction and Maxwell forces • stator natural frequencies and modal shapes• sound power level at variable-speed including PWM• analysis and redesign proposal• specialized software: MANATEE®


A1. Vibro-acoustic characterization

Experimental characterization• experimental or operational modal analysis• operational deflection shapes• sonagrams and spectrograms• post-processing of vibro-acoustic data

Reduction of noise & vibration due to electromagnetic forces• data post-processing, analysis of harmonic sources (e.g. winding, slotting, saturation,

PWM, eccentricities)• electrical redesign proposals• validation with experimental measurements or simulation using MANATEE®

• specialized two-day technical training


A2. Electrical and electromagnetic characterization

Electromagnetic design• definition of overall dimensions to reach specified performance • computation of electromagnetic characteristics (torque, inductances, torque ripple …)• consideration of harmonic effects (skin effect, supply harmonics) and saturation

Calculation and reduction of electromagnetic losses• iron losses in lamination• eddy currents in magnets• proximity and skin effects in conductors• redesign proposals to increase efficiency class (e.g. IE2->IE3)

Modelling methodology• analytical calculation• equivalent electrical networks, reluctance networks• subdomain semi-analytical models• electromagnetic finite element method (2D, 3D, transient, quasi-

static)• open-source tools (FEMM, GetDP) or commercial tools (FLUX,

Ansys, Opera)


A2. Electrical and electromagnetic characterization

Experimental characterization• design and follow-up of test campaigns from kW to MW range• electrical measurements (French certification B2V BE)• electrical sheet characterization as per IEC 60404-2• magnetic field measurements• complex impedance measurements

30 x 300 Epstein frame & 50 x 200 strip coil up to 2kHz


A3. Thermal characterization

Calculation of temperature fields• conduction, forced and natural ventilation, radiation phenomena• cooling system modelling (heat exchanger, pumps, fans)• pressure loss and flow-rate calculations

Modelling methodology• analytical models• thermal nodal networks and equivalent hydraulic networks• CFD numerical simulation• open-source tools (e.g. OpenFoam, GetDP) or commercial tools

(e.g. MotorCad, Fluent)

© TEMPO


Experimental characterization• design and follow-up of test campaigns• infra-red camera thermal measurements• PIV visualization of flows• thermocouples, convective / conductive / radiative flux-meters, Pitot

probes, hot wires, …

A3. Thermal characterization


B1. Optimization & sensitivity studies

Optimization problem solving• setup of the multiobjective (e.g. cost & weight) problem under

constraints • choice of the optimization method and resolution of the problem • possibility to speed up the optimization using space mapping

techniques (e.g. mix of a FEM and analytical models)• decision-making aid


Sensitivity studies• global assessment of a solution robustness• correlation analysis among design variables and objective functions• study of the influence of one or several specific parameters• formalization of design guidelines

A4. Optimization & sensitivity studies


electromagnetic and vibro-acoustic impact of uneven airgap in large diameter generators due to rotor / stator deflections

development of semi-analytical methods for the calculation of the on-load airgap magnetic field and magnet eddy current losses due to concentrated windings

electromagnetic and vibro-acoustic impact of pole displacements due to manufacturing tolerances / demagnetization

comparison of Maxwell forces and magnetostrictive forces in a permanent magnet synchronous machine

development and experimental validation of a low acoustic noise PWM strategy magnet shape optimization to reduce material cost under torque, torque ripple, noise & vibration

constraints development of iron losses model in induction machines and optimization of the efficiency to reach IE3

standard class development and experimental validation of a model of inter-bar currents in squirrel cage induction

machines

prediction of the air distribution among cooling airducts based on hydraulic networks and optimization of the channel distribution

thermal model development based on coupled CFD and nodal network models

A5. Some examples of R&D projects

2015 20 01_eomys engineering_1_en

Engineering

electrical engineering

lillehellemmes france

global approach of engineering

design processes development

applied research

technical state

design process optimization

environment lsee laboratory