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Motors & Generators
BLDC
Servo motor design using MotorSolve: Sizing
The sizing feature of MotorSolve can be used to obtain an initial design of a motor model at the onset on the motor design process. It is an automated feature which uses as input, the target performance specifications and design constraints of the motor, and outputs a complete design including model dimensions and winding details including winding layout, phase coil details and end turn electrical parameters.
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Modeling and simulation of a Halbach cylinder BLDC Servo Motor
MagNet's magnetization pattern predicting capability is used to design a Halbach cylinder BLDC servo motor in this example. A four pole 12 slot, 3 phase machine is designed here including accurate modeling of an external, impulse magnetization of the Halbach cylinder.
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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
HEV motors are characterized by high power density and high output torque over a wide range of operational speeds. Field weakening and operation in the constant-power speed range (CPSR) is key to operating at a wide range of vehicle speeds without the need for excessive gearing. MotorSolve is able to provide useful results to investigate these complex characteristics.
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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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