Application Pages

Electric Field Due to a Pulsed Voltage Source

The 3D transient electric field simulation of a simple copper strip on a dielectric layer over a ground plane is described in this example. The analysis is in 3D since the copper strip is short and there is fringing of the electric field at the end of the strip.

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Electric Field Transient Analysis of a Conductive Shield

Transient phenomena may be present in many devices containing components that are kept at a fixed voltage. Before steady state is reached, it may be necessary to model and understand the nature of the transients. Using ElecNet, it is possible to model and capture this phenomenon. Here, using a three dimensional, axis-symmetric model of a conductive shield, the transient aspect of the device is captured.

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Ensuring Electric Machine Efficiency

An IPM (interior permanent magnet) machine is optimized to minimize the torque ripple while maintaining a minimum running torque, ensuring that the back EMF does not exceed the supply voltage, with the additional constraints that the efficiency be at least 80% at both 1800 and 4000 rpm.

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Field Loss in Power Transformer (T.E.A.M. Problem 21)

Presented here is MagNet’s analysis of a power transfomer in which two exciting coils directed in opposite directions and shielded by magnetic steel plates. The simulated nonlinear eddy current and hysteresis losses are compared to measured results.

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Field Loss in Power Transformer (T.E.A.M. Problem 21a)

Presented here is MagNet&r analysis of the second set of configurations from the family of benchmarks involving two exciting coils directed in opposite directions and shielded by a non-magnetic steel plate. The steel plate has four configurations; no slot, one slot, two slots and three slots. The eddy current losses are compared in all configurations to measured results.

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Field Oriented Control of an IPM

Field oriented control of an interior permanent magnet machine is presented in this example. A 70 KW IPM designed using MotorSolve BLDC is used as an example here; a summary of the motor characteristics, the PI control scheme, the integrated system that includes the motor model and SIMULINK interface and results of some test simulations for controlloing the speed of the motor.

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Flowmaster with MotorSolve

The use of MotorSolve to characterize the thermal performance of an electric motor for use in the thermal-fluid system simulation of electric and hybrid electric vehicles using Flowmaster. (This was originally presented at Engage 2015).

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Flux Weakening of Variable Speed Drives

Variable speed drives generally require electric machines to deliver constant power over a wide speed range and IPMs are known to have the best extended CPSR characteristics

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