Application Pages

Motion analysis of an Induction Motor

When induction machines operate under magnetic saturation, analytic approximations are unable to accurately predict performance. Fine changes may also be very difficult to model analytically. Hence, at this stage, FEA based analysis is usually the method of choice by machine engineers. An automated FEA-based dynamical simulation option has been included in MotorSolve IM for this purpose. This application page provides some details of this analysis option along with some examples.

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Motor Design Improvement by Hardware-In-Loop Simulation using MotorSolve and Opal-RT

Model-based design is a very common idea. It simply consists of using a block diagram of a system to describe it’s behavior, and then to design relative to that description. In particular design specifications are evaluated through system simulation. The big advantages are that it allows for a better integration of components so problems are identified early and also allows the design of a component to be tuned to the system as a whole.

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Nonlinear Time-Transient in Switched Reluctance Motors (T.E.A.M. Problem 24)

This is a test rig of configuration similar to that of a switched reluctance machine. It is made of solid medium-carbon steel and mounted in a nonmagnetic cage which can rotate about a stainless steel shaft. This example shows a nonlinear transient problem, which was solved by MagNet’s Transient 3D solver.

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Nonlinear Time-Transient in Switched Reluctance Motors (T.E.A.M. Problem 24)

This is a test rig configuration similar to a switched reluctance machine. It is made of solid medium-carbon steel and mounted in a nonmagnetic cage which can rotate about a stainless steel shaft. This is a nonlinear transient problem, which was simulated using MagNet for SOLIDWORKS transient solver.

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Ohmic losses in transformer clamping plates

Calculating stray losses in power transformer tanks and clamps is an important design characteristic to consider. However the standard approach requires modeling skin effects in 3D which requires a very fine mesh. This can significantly increase the solution time making the simulation impractical to perform at times. Using the proprietary formulation of the non-linear Surface Impedance boundary condition (SIBC) that is unique to MagNet, very accurate non-linear loss predictions can be achieved in time-harmonic context without the cost of using fine 3D meshes.

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Optimization Of A Die Press (T.E.A.M. Problem 25)

In this device, the objective is to find the size of the inner die mold and the shape of the outer die mold in order to obtain the desired magnetic field in the cavity shown in the figure. Using MagNet and OptiNet, the optimal radius for the inner mold and the elliptical shape for the outer mold can be determined given specified design objectives.

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Optimization of a Loudspeaker: Minimal Mass

The loudspeaker model shown here is made of two iron pieces and a permanent magnet. The permanent magnet drives the flux through the iron and the air gap. The goal of the optimization is to find a loudspeaker designer that has the minimal mass necessary to produce a flux density of 1.8 Tesla in the air gap.

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Optimizing Electromechanical and Control Circuit Parameters of Brushless Motors

Optimizing the performance of modern brushless DC motors typically requires evaluating both the electromechanical and control circuitry design factors – examining either in isolation yields only partial improvements. This example illustrates how OptiNet can be used to further refine the results obtained by co-simulations.

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