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Motors & Generators - Induction Application Pages

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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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Three-phase induction motor startup (T.E.A.M. Problem 30A)

This is an example of a three-phase induction motor. In MagNet, this IM is simulated and analyzed using the Transient 2D with Motion solver. The method and results presented here displays the characteristics of the machine during startup. In this analysis, no load or friction is specified

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Single-phase induction motor (T.E.A.M. Problem 30B)

Presented is a half-model of a single-phase induction motor which has a periodic boundary condition on the plane of symmetry. It was simulated using the MagNet transient 2d with motion solver in a single transient run, as a velocity-driven problem..

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Thermal Analysis of an Induction Motor

In order to predict machine temperatures, the design of the electric machine needs to take thermal factors into account. In this example, a 4kW IM machine is chosen to demonstrate the new thermal analysis features within MotorSolve.

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Axial Flux Disk Induction Machine

MagNet 3D Transient with Motion solver was used to model both a run-up to synchronous speed and also to create a torque-speed curve. This particular machine provided the opportunity to compare the MagNet results against measurements made on the real device, and to also show the accuracy and value of simulation with MagNet. This type of machine is often specified when rapid changes in operating speed are required or the short axial length of the machine is crucial. The simulation results and comparison to measured date are presented.

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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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Design and Analysis of a 2 HP Wound Field Induction Motor

A 2 HP wound field induction motor example is used to demonstrate some of the design and analysis capabilities of MotorSolve IM. The motor contains 30 rotor slots and 36 stator slots. This example showcases the features of MotorSolve IM that allows the user to implement a typical design cycle. This includes automated winding selections, load point analysis, bridge simulations etc.

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Designing Induction Motors

MotorSolve IM is a comprehensive tool within which modeling, design iteration and design validation can be carried out for induction machines. To facilitate this, user friendly and powerful modeling features as well as multiple types of analysis options of varying degrees of approximation and complexity have been implemented. These include equivalent circuit based analysis, AC analysis, PWM and dynamical motion simulations. Provided below is a summary of MotorSolve IMs’ modeling and analysis capabilities.

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