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Motors & Generators
BLDC
Iron Loss Calculations in Laminated Structures
Most core loss calculation approaches apply Epstein frame data neglecting a number of significant factors such as drive types and differences between flux density. MagNet takes into account the histories of flux density in various parts of the machine, the drive type and separates the loss sources at the component level. Using the example of an interior permanent magnet motor, this novel approach is demonstrated.
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Iron loss separation - trends in high-torque BLDC Motors
Using MotorSolve BLDC, the iron loss trends in a high-torque BLDC motor with respect to electrical loading, drive types (sinewave and six-step drive) and rotor back iron depth are computed. The need for FEA based analysis is demonstrated here, as well as a simple application of the results that helps the engineer set electrical loadings for this machine.
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Studying the Demagnetization Characteristics of Machines containing Permanent Magnets
MagNet's demagnetization analysis features allow the user to study the demagnetization characteristics of machines containing permanent magnets. It includes three probes of this phenomenon: the Demagnetization field, Demagnetization prediction field and Demagnetization proximity field. This example demonstrates how demagnetization properties are set in MagNet, and then apply this to a BLDC motor.
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Using MotorSolve to Investigate the Complex Characteristics of an Hybrid Electric Vehicle Motor
MagNet's demagnetization analysis features allow the user to study the demagnetization characteristics of machines containing permanent magnets. It includes three probes of this phenomenon: the Demagnetization field, Demagnetization prediction field and Demagnetization proximity field. This example demonstrates how demagnetization properties are set in MagNet, and then apply this to a BLDC motor.
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PWM analysis using MotorSolve BLDC
MotorSolve BLDC's features include obtaining performance results using PWM drive circuits, some examples of which are presented here. The figure shown here is an example of a wye-connected 3 phase drive circuit used in such simulations. PWM capabilities of MotorSolve BLDC include delta connected circuits and sinusoidal and six-step drive types. Also, switching losses are taken into account in the simulations.
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MotorSolve: Winding Layouts, Analysis and Short Pitching
One of the most important aspects of motor design is to choose the correct winding layout. For a given pole-slot combination and winding type, MotorSolve BLDC automatically computes and gives the designer the option of choosing from a selection of balanced - all phases with same back emf and out of phase by 120 degrees. For each of these layouts the back emf, back emf harmonics and winding factors are also readily available for analysis.
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An Overview of MotorSolve
MotorSolve offers a new and enhanced user experience, a powerful geometry engine and windings editor, a simple results-driven post-processor and the capability to manage, compare and analyze multiple designs and generate reports with any combination of the dozens of graphs, values, plots and data that are available.
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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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