2014 02 25_eomys engineering_0_en

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Technology

Published on February 25, 2014

Author: eomys

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Description

EOMYS ENGINEERING, based in Lille (North of France), provides engineering consultancy and research services in the field of multiphysics innovative systems in the energy, transportation and building sectors. One specialization of the company is electrotechnical systems (electrical machines, transformers, electromagnetic actuators).
EOMYS ENGINEERING is a multidisciplinary team of innovative PhD Engineers with both industrial and university experience, providing complete R&D services, from mathematical modeling to experimental measurements through numerical simulation and scientific software development.
EOMYS works in collaboration with the electrical engineering laboratory of Lille (L2EP) and the thermal engineering laboratory of Valenciennes (TEMPO) in the field of electrical machines.
EOMYS internal research program is dedicated to the reduction of the environmental impact of electromechanical systems (control of electromagnetic noise and vibrations, increase of the electromagnetic efficiency, development of new ecodesign optimization methods).

EOMYS ENGINEERING Engineering consultancy & outsourced research services LE BESNERAIS Jean 25/02/14 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 1

I. PRESENTATION • Young Innovative Company* created in may 2013 • Located in Lille, North of France • Activities : engineering consultancy & research specialized in electrical engineering • Sectors : transportation, energy, aeronautics, building… • Partnerships: - Laboratory of Power Electronics and Electrical Engineering of Lille (L2EP) - Laboratory of Fluid Dynamics & Heat Transfer of Valenciennes (TEMPO) - Industrial cluster Motors & Electrical Devices for Energy Efficiency (MEDEE) *"Jeune Entreprise Innovante": the French government recognises that EOMYS runs significant R&D activities EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 2

II. SERVICES Solve your “multiphysics” technical problems • • coupled electromagnetics, structural mechanics, fluid dynamics and thermal problems expertise in noise and vibrations due to electromagnetic forces Increase your design process efficiency • • implementation and validation of more accurate / faster models optimization of the “virtual prototyping” chain Improve your system understanding • • • advanced post-processings of experimental / simulation data sensitivity studies and design guidelines high-level technical trainings Optimize your products and processes • • coupling with multiobjective constrained optimization methods development of user-specific optimal design interfaces Develop some innovative system architectures • • research consortium / co-development programmes technical state of the art, ideation and concept validation EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 3

III. EXPERIENCE 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 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 4

IV. ADVANTAGES A 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 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 5

V. VISION A global approach of engineering and applied research dedicated to innovation: EOMYS ENGINEERING Long-term solutions Short-term solutions Laboratory experience (PhD) Industrial experience Creativity Pragmatism Abstract thinking Hands-on Scientific watch Survey of industrial needs International collaborations Mathematics, computing Local laboratory partnerships Electrical engineering, thermics, mechanics Engineering Consultancy / Applied Research EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 6

VI. VALUES High standards and integrity • • • professionalism respect of intellectual property data security Energy and flexibility • • reactivity proactivity Open-mindedness and creativity • • • complementary scientific approaches culture of innovation diversity of application sectors Respect for people and environment • • search for sustainable technological solutions company Code of Ethics EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 7

A. TRANSFORMERS & INDUCTORS EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 8

A1. Electrical and electromagnetic characterization Calculation of equivalent electrical circuit • • high frequency and non linearity effects (saturation) parasitic capacities at high frequencies Calculation of radiated electromagnetic field • • • 3D magnetic field design of magnetic shielding 3D electrostatic field for dielectric EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 9

A1. Electrical and electromagnetic characterization Calculation of Joule and iron losses • • skin effect proximity effects Modelling methodology • • • • analytical models equivalent electrical networks, reluctance networks electromagnetic finite element method (2D, 3D) open-source tools (FEMM, GetDP) or commercial tools (FLUX, Ansys, Opera) EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 10

A1. Electrical and electromagnetic characterization Experimental characterization • • • • • design and follow-up of test campaigns 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 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 11

A2. 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, equivalent hydraulic networks CFD numerical simulation open-source tools (OpenFoam, GetDP) or commercial tools (FLUX, Ansys) EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 12

A2. Thermal characterization Principle of thermal nodal networks 1 1

A2. Thermal characterization Tw(m,3,0) ) m,1,0 w( ) n (m ,1, ) Principle of thermal nodal networks ) ,1, T w(m m Rn( m,1 , w( p n m ,1 , ) Rw (m ,1 ,0 ) Tw(m,2,0) Tw(m,1, ) w(m,1,0) (loss sources not illustrated) 1 2

A2. Thermal characterization Experimental characterization • • • • design and follow-up of thermal test campaigns infra-red camera thermal measurements PIV visualization of flows thermocouples, convective / conductive / radiative flux-meters, Pitot probes, hot wires, … EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 15

A3. Vibro-acoustic characterization Noise and vibrations due to electromagnetic forces • • • • • simulation of both Maxwell forces and magnetostriction within GetDP environment calculation of natural frequencies and modal shapes prediction of resonances calculation of Laplace forces in short-circuit cases calculation of winding deflections Experimental characterization • • • • • design and follow-up of vibroacoustic test campaigns vibroacoustic measurements in semi-anechoic chamber experimental or operational modal analysis operational deflection shapes post-processing of vibro-acoustic data EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 16

B. ELECTROMAGNETIC ACTUATORS EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 17

B1. 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) Methodologies • • • • • analytical calculation equivalent electrical networks, reluctance networks subdomain models electromagnetic finite element method (2D, 3D, transient, quasi-static) open-source tools (FEMM, GetDP) or commercial tools (FLUX, Ansys, Opera) EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 18

B1. Electrical and electromagnetic characterization Experimental characterization • • • • design and follow-up of electrical tests (European certification B2V BE) electrical sheet characterization as per IEC 60404-2 measurement of magnetic field measurement of complex impedance 30 x 300 Epstein frame & 50 x 200 strip coil up to 2kHz EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 19

B2. 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 Methodologies • • • • analytical models thermal nodal networks, equivalent hydraulic networks CFD numerical simulation open-source tools (OpenFoam, GetDP) or commercial tools (FLUX, Ansys) EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 20

B2. Thermal characterization Experimental characterization • • • • design and follow-up of thermal test campaigns infra-red camera thermal measurements PIV visualization of flows thermocouples, convective / conductive / radiative flux-meters, Pitot probes, hot wires, … EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 21

B3. Vibro-acoustic characterization Noise & vibration due to electromagnetic forces • • • • • calculation of magnetostriction (GetDP) and Maxwell forces calculation of natural frequencies and modal shapes calculation of noise & vibration at variable-speed analysis and redesign proposal Matlab internal software: MANATEE® Experimental characterization design and follow-up of vibroacoustic test campaigns experimental or operational modal analysis operational deflection shapes sonagrams and spectrograms post-processing of vibro-acoustic data 2 e-6 Acceleration level (dB Re 1 m/s) • • • • • Acceleration spectum 1 50 1 00 50 0 5000 1 0000 Frequency (Hz) EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 1 5000 22

B4. Some examples of R&D projects in electrical machines  electromagnetic and vibro-acoustic impact of pole displacements due to manufacturing tolerances / demagnetization  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 airgap magnetic field in asymmetrical cases  comparison of Maxwell forces and magnetostrictive forces in a permanent magnet synchronous machine  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  development and experimental validation of a thermal model of a new cooling technology including centrifugal heat pipes      magnet shape optimization to reduce material cost under torque, torque ripple, noise & vibration constraints development of semi analytical models for the calculation of magnet eddy current losses development of iron losses model in induction machines and optimization of the efficiency to reach IE3 class development and experimental validation of a model of inter-bar currents in squirrel cage induction machines development and experimental validation of a low acoustic noise PWM strategy EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 23

C. OPTIMIZATION AND SENSITIVITY STUDIES EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 24

C1. Multiobjective optimization 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 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 25

C2. Sensitivity studies 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 EOMYS ENGINEERING – 121, rue de Chanzy 59260 Lille-Hellemmes FRANCE 26

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