Electrical Engineering Services

ATOA's ELECTRICAL ENGINEERING SERVICES

Electromagnetic radiation spans across Gamma rays to Radio waves. The wave nature of electromagnetics allows us to spread the learning from one type of wave physics to other. Solution to Maxwell equation is the foundation to solve electromagnetic problems. Electromagnetic wave interaction with structure also changes as function of wavelength to interacting feature size. This phenomenon is used to solve electromagnetic equations with appropriate approximation for solving real life problems.  Length and nano scale engineered miniaturization, energy efficient and connected devices are growth trends for innovative electrical and electronics devices. We provide Electrical Engineering services to safeguard continuous, reliable and efficient electrical and electronic devices by simulating static, low frequency, transient and high frequency effects.  We specialise on the coupled electromagnetic with structural, thermal, acoustical, chemical and flow effects.

Electrical Engineering Simulations Solutions

We offer, static, transient, harmonic, resonance, frequency domain and time explicit electromagnetic simulations. The various type of electromagnetic simulations offered by ATOA include :

• Ray tracing analysis with Rectilinear Propagation, Reflection, Refraction and  Dispersion effects.

• Electro and magneto statics

• Conductive media DC

• low frequency electromagnetics and Electromagnetic wave propagation.

• Wave propagation analysis with Interference, Diffraction, Polarization, refraction, Diffusion (Scattering) and Fluorescence effects.

• Rotating Electrical Machinery

• Nano and Microelectromechanical devices (NEMS and MEMS)  Simulations.

Multiphysics Electrical Engineering Simulations Solutions

Our Specialty coupled MULTIPHYSICS CAE for Electrical Engineering includes,
Coupled Electro thermal: Laser, Joule, Induction, RF, microwave and Solar Heating.
Coupled electrical and flow problems: Flow battery, Nanochannels.
Coupled electrical, chemical, thermal and flow problems: Lead Acid, Lithium Battery, Fuel cells.
Coupled Electrical, Thermal and Structural problems: Electrothermal actuation, expansion
Electrical + Structural coupling: Piezoelectric, Piezoresistive, electro magnetostriction.

Emerging Electrical Engineering
Our focus on emerging technologies related to Electrical and Electronics Engineering are,
Modelling the length scale effects for innovative nano engineered electrical and electronic devices.
Engineered surfaces for functional optical surfaces, Photonic band gaps, meta surfaces and transparent conductive films.

• Metamaterial for unusual properties for innovative electrical and electronic devices.

• High energy density battery for renewable energy storage, smart phones and electrical vehicles

• Renewable Energy products: Solar and Wind

ATOA’s  New addition to  Electrical Engineering Solutions,

• 3D Printing of scaledown functional models of electrical devices.

• Engineering apps to calculate electrical power, voltage, load, transmission, material properties and energy saving.

The electromagnetic static services are targeted towards, Electric Motors, Generators, circuit breakers, Induction/ RF/ Dielectric heating applications development. The electromagnetic wave propagation simulations are aimed to solve problems related to Antennas Waveguide and resonator, Optical fibres, Photonic structures and Transmission lines.

Simulation services for Material design for higher electrical conductivity, ultra low dielectricity is also on offer. Optimal Material with high thermal conductivity combined with low electrical insulation design is also possible. Electromagnetic Metamaterials for engineering unusual properties is latest offering from our Research and innovation.

The interaction physics of the solar electromagnetic waves with engineering structure depends on the size. The ray optics or analytical approximation governs most of the device design, however, we  specialize on interference, diffractive, photonic and meta interactions for innovative electrical and electronic devices.

Electromagnetic Mechanics Key words:  

Electrical Engineering: Direct Current(DC), Alternating Current (AC), Electromagnetics, Electrostatics, Magnetostatics, Low Frequency, Transient, High Frequency, Radio Frequency, Time domain, Frequency Domain, Maxwells Equation

Multiphysics: Piezoelectric, Piezoresistive, Thermoelectric, Joules heating, Microwave heating, RF heating, Laser heating, Induction heating

Electrical Application: EV, Electrical Motors, Generators, Circuit breakers, Computers, Transmission lines, Stabilizer, Transformer, Powerstation, Electronics, Semiconductor, Battery, Power Electronics, Consumer Electronics, Electrical

Computational Electromagnetic Mechanics

Introduction to Electromagnetic Mechanics

Electromagnetic mechanics is a vital field within engineering that deals with the interactions between electric and magnetic fields and the forces they exert on charged particles and current-carrying conductors. This discipline plays a crucial role in various applications, including telecommunications, electronics, medical devices, and renewable energy systems. By understanding and modeling these interactions, engineers can develop innovative solutions and optimize system performance.

Use Cases in Electromagnetic Mechanics

Electromagnetic mechanics is utilized across a wide array of industries and applications, including:

·             Telecommunications: Designing antennas and communication systems that rely on electromagnetic waves for signal transmission and reception.

·             Electronics: Developing components such as capacitors, inductors, and transformers, where electromagnetic principles govern their behavior.

·             Medical Devices: Employing electromagnetic fields in imaging technologies like MRI and in therapeutic devices like electromagnetic field therapy.

·             Renewable Energy: Designing magnetic components in wind turbines and generators, where electromagnetic principles facilitate energy conversion.

·             Transportation: Implementing electromagnetic propulsion systems in trains and advanced vehicles, optimizing energy efficiency and performance.

Basics of Electromagnetic Mechanics

Electromagnetic mechanics is based on fundamental principles derived from Maxwell’s equations, which govern the behavior of electric and magnetic fields. Key concepts include:

·             Electric Field (E): A vector field around charged particles that exerts force on other charges.

·             Magnetic Field (B): A vector field that describes the magnetic influence of electric currents and magnetic materials.

·             Lorentz Force: The force experienced by a charged particle moving through electric and magnetic fields, given by the equation:

F = q(E + v × B) 

Where:  F: is the Lorentz force , q: is the charge of the particle, E: is the electric field vector, v: is the velocity vector of the charged particle, B: is the magnetic field vector, ×: denotes the cross product of vectors.

Types of Electromagnetic Analysis

Electromagnetic analysis can be categorized into several types:

·             Static vs. Dynamic Fields: Static fields are time-independent, while dynamic fields vary with time, often involving wave propagation and resonance phenomena.

·             Electrostatics vs. Magnetostatics: Electrostatics focuses on stationary charges, while magnetostatics deals with steady currents and magnetic fields.

·             Electromagnetic Waves: Analyzing the propagation of electromagnetic waves in different media, including reflections, refractions, and absorptions.

Computational Models in Electromagnetic Mechanics

Computational models are essential for analyzing complex electromagnetic phenomena. Common methods include:

·             Finite Element Method (FEM): A numerical technique used to solve electromagnetic problems by discretizing the domain into smaller, simpler parts. FEM is widely used in simulating electric fields, magnetic fields, and wave propagation.

·             Boundary Element Method (BEM): A technique that reduces the dimensionality of the problem by focusing on boundaries, making it effective for infinite or semi-infinite domains.

·             Method of Moments (MoM): An approach used for solving integral equations that arise in electromagnetics, particularly in antenna design and scattering problems.

Partial Differential Equations (PDE) in Electromagnetic Mechanics

The behavior of electric and magnetic fields is governed by partial differential equations (PDEs), particularly Maxwell’s equations. These equations can be expressed as:

·             Gauss’s Law: Relates the electric field to charge density:

·             div(E) = ρ / ε0

·             Gauss’s Law for Magnetism: States that there are no magnetic monopoles:

·             div(B) = 0

·             Faraday’s Law of Induction: Describes how a changing magnetic field creates an electric field:

·         curl(E) = - ∂B/∂t

·             Ampère-Maxwell Law: Relates magnetic fields to current density and changing electric fields:

·             curl(B) = μ0 J + μ0 ε0 ∂E/∂t

Characterizing Material Properties

Typical required material properties in electromagnetic mechanics include:

·             Permittivity (ε): A measure of how much electric field is reduced in a medium; it influences how electric fields interact with materials.

·             Permeability (μ): A measure of how easily a magnetic field can penetrate a material, crucial for understanding magnetic materials and inductive components.

·             Conductivity (): A measure of a material’s ability to conduct electric current; it affects the efficiency of electrical devices and systems.

·             Loss Tangent: A parameter that quantifies energy loss in dielectric materials due to heat dissipation when subjected to an electric field.

Typical Product Performance Characteristics

The performance characteristics of electromagnetic systems designed using computational mechanics include:

·             Field Strength: The intensity of electric or magnetic fields, critical for ensuring the proper functioning of devices like motors, generators, and antennas.

·             Impedance Matching: The ability of a device to match the impedance of the source or load, essential for efficient energy transfer in electrical circuits.

·             Radiation Patterns: The distribution of electromagnetic energy emitted by antennas or sources, influencing signal quality and coverage in communication systems.

·             Signal Integrity: The ability of a system to maintain the quality of signals over distances, impacted by electromagnetic interference and loss characteristics.

Summary of Electromagnetic mechanics

Electromagnetic mechanics within computational domains is essential for designing and analyzing systems that utilize electric and magnetic fields. With advancements in computational models, numerical methods, and innovative materials, engineers can create products that perform effectively in diverse electromagnetic environments. Continuous evolution and integration of new technologies will further enhance the potential for innovation in electromagnetic mechanics, ensuring that engineering solutions meet the challenges of modern applications.