Low Frequency Electromagnetics

Electrostatic, magnetostatic and low frequency electromagnetic field simulation

SIMULIA’s specialized simulation tools for low-frequency and statics can tackle challenges including magnet design, high-voltage power device and electrical machine development. Industries including energy, transportation and mobility, marine and offshore, and industrial equipment use low-frequency simulation to design cutting edge products and innovative systems.

The flexibility of SIMULIA’s tools in adapting to user requirements has seen it being used successfully for a wide range of applications in different industries. The accuracy they provide is of paramount importance when looking at field homogeneities of parts-per-million in medical devices or particle accelerators. Advanced material modeling and solution procedures enable detailed studies of devices containing permanent magnets or superconducting coils. Application-specific front-ends help guide the users through the complex task of simulating and optimizing high-efficiency high-performance motors, generators and transformers.

Low-frequency simulation cuts development time, cost and risk in product development, and allows engineers to understand and optimize large, complex systems on the scale of generators, ships and particle accelerators.

The advanced hysteresis and demagnetization material modelling provides the required level of accuracy that allows designers and engineers to rely on virtual prototyping and significantly reduce the path from design to production.

The strong coupling of electromagnetic effects with thermal and mechanical ones is a feature of most low frequency devices. SIMULIA provides best-in-class tools for the in-depth analysis of coupled physics behavior required to obtain a complete view of the systems’ performance and reliability.

Low Frequency Applications

Power generation and transmission

Transformers, switchgears, bus bars and similar components need to conduct large currents safely, without dangerous flashover or current leakage. Simulation shows fields and currents around components, including eddy currents, as well as heat generation, allowing designers to verify that high power systems will operate safely even under extreme loads.

Sensor design

From capacitive touchscreens to non-destructive testing, many sensors use static or low frequency fields to detect and measure targets. Simulation can be used to analyze and optimize the response of sensors to different test targets, even in the presence of interference or soiling.

Magnet design

Magnets form the basis of many precision instruments in fields such as medical imaging, particle research and material science. Simulation provides standard magnet KPIs including field distribution, field homogeneity and gradients, Fourier analysis coefficients, associated Legendre polynomial coefficients, peak fields on coils and shielding effectiveness, as well as multiphysics results including forces, heating and stress.

Superconducting magnets

Superconducting magnets can produce extremely strong magnetic fields efficiently, but their operation relies on the presence of cryogenic coolant. If the magnet fails, it can undergo a violent “quench” as the coolant boils and the superconductor transitions to resistive. Simulation can model superconducting magnet performance, including quench propagation.

MRI magnets

Magnetic resonance imaging (MRI) requires very powerful magnets with a precisely controlled magnetic fields. SIMULIA simulation tools have the accuracy needed to design MRI magnets. Our  solvers can combine static and LF magnetic field analysis with RF coil and patient safety simulations. Links to spin simulation tools complete the MRI design workflow.

Particle beam optics

Magnetic lenses and other beam directing magnets are a crucial part of particle accelerators. Particle tracking simulation can model the movement of charged particles through magnetic fields to allow scientists to design and optimize accelerator components. For more information, see Particle Dynamics.

Magnetic shielding

Stray magnetic fields can cause electromagnetic compatibility and interference (EMC/EMI) issues, including data loss in memory, damage to electronic equipment, and risk to people with implanted pacemakers. With simulation, users can design magnetic shielding for permanent magnets and induction coils (for example, wireless electric vehicle charging) to safely contain the magnetic fields.

Cathodic protection

To protect against corrosion from salt water, ocean-based equipment such as ships, oil rigs and offshore wind turbines use cathodic protection, with a sacrificial or impressed current anode preventing the oxidation of the metal body. Simulation calculates the potential across the vessel to analyze the performance of cathodic protection systems and help optimize anode placement.

Magnetic signature and degaussing

Mitigation of electric and magnetic field signatures is an important part of the design process for a naval vessel. SIMULIA’s LF solver has been widely used for many years as a simulation tool for both un-degaussed and degaussed signature assessment, showing high levels of accuracy in validation exercises and flexibility in optimizing positions of degaussing coils.

Low Frequency Electromagnetic Simulation Materials

SIMULIA Electromagnetics Technology for Low Frequency Simulation

SIMULIA develops simulation technology that  can be used to calculate electromagnetic fields in a wide range of application areas. These technologies are particularly useful for low frequency simulation. Depending on your working environment this technology is available to you in various ways:

Electromagnetics on the 3DEXPERIENCE Platform

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3DEXPERIENCE Works Electromagnetics

Electromagnetics Engineer is a high-performance 3D electromagnetic simulation solution. Powered by the industry proven CST Studio Suite, this cloud-enabled role delivers fast, effective simulation and design guidance of electro-mechanical devices, PCB’s, antennas in a truly multi-physics environment.

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Opera Simulation Software is a Finite Element Analysis software suite which, with its strength in low frequency simulation, is extremely useful for the design of magnets, electric motors and other electrical machines.

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