Application Pages

Position and speed of metal components measured with variable reluctance sensor

Variable reluctance sensors are used to measure position and speed of moving metal components. This sensor consists of a permanent magnet, a ferromagnetic pole piece, a pickup coil, and a rotating toothed wheel.

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Power Transformer Failure and Challenges in the Transformer Design

Transient overvoltages due to lightning strikes, switching operations in circuit breakers and ferro-resonances can cause a non-linear voltage distribution over the transformer windings, high field strengths between turns, and eventually lead to destruction of the winding insulation. (This was originally presented at Engage 2015).

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PWM analysis of an Induction Motor

The PWM feature of MotorSolve IM is designed to assist the machine engineer to gauge the performance of induction motors for realistic drive circuits. To this end, 3-phase bridge circuits with delta and space vector modulation (with Wye/Delta connection) options are offered that allow the user to calculate a large array of entities and compare results with ideal drive simulation. The methodology and some examples of results using PWM simulations are presented in this application page.

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Reducing the Eddy Current Losses in Permanent Magnets by Segmentation

In this example, MagNet is used to investigate the effect of segmentation on a surface mounted permanent magnet machine. Historically, very thin insulation layers, which were hard to model and mesh in a FEA environment, were employed to separate the permanent magnet segments. Fortunately, this no longer needs to be the case, as MagNet provides a very simple method to model the insulation layer by using a perfect electric insulator boundary condition.

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Reducing the start-up transients of an induction motor

There are a number of techniques to significantly reduce the duration of start-up transients using the right initial conditions with MagNet. These powerful features are applied to the simulation of an induction machine. These methods can all be automated by scripting as well.

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Response Surface Modeling of an Actuator in Simulink®

A response surface model (RSM) of an actuator is created using MagNet, and then placed in a system model created in Simulink. The movement of the plunger in this actuator is then simulated in Simulink using the RSM.

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Simulating a Charged Particle Entering a Quadrupole Ion Trap

Using ElecNet and the Trajectory Evaluator add-on, the trajectories of charged particles entering a Quadrupole Ion Trap can be simulated. The results presented are based on a particle with an electric charge (of value -1.6e-29) being placed at the center of the ion trap while the side electrode is subjected to a frequency of 100 Hz.

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Simulating a claw-pole alternator in an automobile electrical system environment

Since a claw-pole alternator can be found under the hood of almost any car, it is one of the most optimized of magnetic machines, balancing manufacturing costs against efficiency. Simulating its dynamic electromagnetic characteristics is challenging, but careful analysis of the results can lead to further improvements. Here, MagNet’s Transient 3d with Motion solver simulates this machine in the environment of an automobile electrical system, including a three-phase diode bridge and a resistive load.

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