Modeling Capacitors, Inductors, Insulators, Coils, Motors, and Sensors The AC/DC Module is used for simulating electric, magnetic, and electromagnetic fields in static and low-frequency applications. Typical applications include capacitors, inductors, insulators, coils, motors, actuators, and sensors, with dedicated tools for extracting parameters such as resistance, capacitance, inductance, impedance, force, and torque. Materials and constitutive relations are defined in terms of permittivity, permeability, conductivity, and remanent fields. Material properties are allowed to be spatially varying, time-dependent, anisotropic, and have losses. Both electric and magnetic media can include nonlinearities, such as B- H curves, or even be described by implicitly given equations. Boundary Conditions and Infinite Elements The AC/DC Module grants you access to a set of essential boundary conditions such as electric and magnetic potential, electric and magnetic insulation, zero charge, and field and current values as well. In addition, a range of advanced boundary conditions are included, such as terminal conditions for connection with SPICE circuits, floating potentials, conditions for symmetry and periodicity, surface impedance, surface currents, distributed resistance, capacitance, impedance, and contact resistance.
For modeling unbounded or large modeling domains, infinite elements are available for both electric and magnetic fields. When an infinite element layer is added to the outside of a finite-sized modeling domain, the field equations are automatically scaled. This makes it possible to represent an infinite region with a finite-sized model and avoids artificial truncation effects from the model boundaries. For electrostatics and magnetostatics modeling, the boundary element method is available as an alternative method of modeling large or infinite regions. MAGNETIC PROSPECTING: Underground iron ore deposits result in magnetic anomalies. This model computes the disturbances in the background magnetic field of the earth due to the presence of an ore deposit. The Reduced Field formulation solves for small perturbations in the background field.
AC/DC Module User’s Guide and the AC/DC Module Model Library, and this. Exceed 3d 2008. All COMSOL manuals use a set of consistent typographical conventions that should. Mach3 Serial Port Control. Introduction to AC/DC Module. Introduction to the AC/DC Module 1998–2011 COMSOL. This manual guides you through an example that gives you a. Comsol ac dc module manual. This course allows current and potential users of COMSOL Multiphysics and the AC/DC Module to quickly get acquainted with the software.
Combine Circuits and Layouts with 2D and 3D Simulations When considering your electrical components as part of a larger system, the AC/DC Module provides an interface with SPICE circuit lists where you choose circuit elements for further modeling. More complex system models can be exploited using circuit-based modeling while maintaining links to full field models for key devices in the circuit, allowing for design innovation and optimization on both levels. Electronic layouts can be brought in for analysis with the AC/DC Module via the. Simulation of such layouts is not limited to electromagnetics. Connect with CAD, MATLAB ®, and Excel ® In order to make it easy for you to analyze electromagnetic properties of mechanical CAD models, COMSOL offers the ECAD Import Module, the, and LiveLink™ products for leading CAD systems as part of our product suite. The LiveLink products make it possible to keep the parametric CAD model intact in its native environment but still control the geometric dimensions from within COMSOL Multiphysics ®, as well as produce simultaneous parametric sweeps over several model parameters. For repetitive modeling tasks, for allow you to drive COMSOL ® simulations with MATLAB ® scripts or functions.
Any operation available in the COMSOL Desktop ® can alternatively be accessed through MATLAB commands. You can also blend COMSOL commands in the MATLAB environment with your existing MATLAB code. For electromagnetic simulations operated from spreadsheets, offers a convenient alternative to modeling from the COMSOL Desktop with synchronization of spreadsheet data with parameters defined in the COMSOL environment. Nonlinear Magnetic Materials Database A database of 165 ferromagnetic and ferrimagnetic materials is included in the AC/DC Module.