Application Pages

Cogging torque in a skewed brushless DC motor

The predicted cogging torque in a brushless DC motor is compared between two different stator geometries: a straight stator and a skewed stator. MagNet makes it easy to set up multiple problems for solution at different rotor angles. And MagNet’s Static 3D solver reports the magnetic forces and torques experienced by each body in the model, so it is easy to create a torque-angle curve.

Link to example

Coil Size Optimization - Induction Heating

In the multiple-coil configuration shown in this figure, the work piece is surrounded by six coils (coils are shown partially so that the workpiece can be seen). The objective of this optimization is to find the inner radii of the coils in order to obtain a uniform temperature in the upper portion of the workpiece.

Link to example

Computing the Lumped Parameters of Induction Machine Models

MotorSolve IM performs no-load saturation, locked-rotor and impedance test simulations to evaluate the circuit parameters. The tests are based on FEA solves and include accurate estimation of core losses. In this analysis mode, computation of the lumped parameters allows the user to specify the leakage ratios between the rotor and stator. This example demonstrates the equivalent circuit based analysis of a 17 bar - 24 slot machine.

Link to example

Core Loss and Efficiency Calculations

Infolytica's products have adopted an advanced core loss model. This can be used to accurately determine the efficiency of a permanent magnet machine, or when coupled with ThermNet, provide a better simulation of temperature changes in a permanent magnet voice coil.

Link to example

Co-simulating the current vector control of an IPM motor

The current vector control of an IPM (interior permanent magnet) motor is simulated here using the combined power of the PSIM circuit and systems simulator from PowerSim and MagNet. This is a co-simulation in which both PSIM and MagNet run their transient solvers simultaneously, with a constant data exchange between the two to keep the shared quantities (voltages and currents) synchronized.

Link to example

Creating a Response Surface Model of an Actuator for Multi-Discipline Design in SystemVision

A response surface model of an actuator is created by performing several magnetostatic analyses at different currents and positions in MagNet. The RSM can then be used in system simulators, such as SystemVision from Mentor Graphics.

Link to example

Creating a VHDL-AMS model of a claw-pole alternator

A VHDL-AMS model of a claw-pole alternator is created using the System Model Generator. The SMG creates a Response Surface Model (RSM) of the claw-pole by driving MagNet to execute a number of static solves at different phase currents and rotor positions. This RSM is embedded in the VHDL-AMS file to create a component which is functionally equivalent to the original MagNet model, but which can be evaluated extremely quickly in a transient circuit simulation.

Link to example

Current distribution in a Claw-pole Alternator

The device is a claw-pole automobile alternator with a three-phase output winding on the stator. A field coil around the rotor core is used to induce flux in the output windings as the rotor spins.

Link to example