Application Examples - Brushless DC motors - SPM
Application examples with Model Files available
Minimizing the cogging torque in a 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.
Cogging torque is undesirable because it introduces vibration and noise, and also makes precise positioning of the rotor impossible because the rotor tends to lock onto a position where it is aligned with the stator poles. By skewing the stator, the cogging torque can be significantly reduced.
Simcenter MAGNET makes it easy to set up multiple problems for solution at different rotor angles. In addition, Simcenter 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.
The predicted cogging torque in a brushless DC motor is compared between two different stator geometries: a straight stator and a skewed stator.
Cogging torque is undesirable because it introduces vibration and noise, and also makes precise positioning of the rotor impossible because the rotor tends to lock onto a position where it is aligned with the stator poles. By skewing the stator, the cogging torque can be significantly reduced.
Simcenter MAGNET makes it easy to set up multiple problems for solution at different rotor angles. In addition, Simcenter 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.
Application Examples - Brushless DC motors - SPM
Other application examples (report only)
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.
Cogging torque is undesirable because it introduces vibration and noise, and also makes precise positioning of the rotor impossible because the rotor tends to lock onto a position where it is aligned with the stator poles. By skewing the stator, the cogging torque can be significantly reduced.
The predicted cogging torque in a brushless DC motor is compared between two different stator geometries: a straight stator and a skewed stator.
Cogging torque is undesirable because it introduces vibration and noise, and also makes precise positioning of the rotor impossible because the rotor tends to lock onto a position where it is aligned with the stator poles. By skewing the stator, the cogging torque can be significantly reduced.
Brushless motor design with Simcenter Motorsolve
Simcenter Motorsolve is the most powerful and intuitive package for design and analysis for rotating electric machines. Simcenter 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 analyse multiple designs and generate reports with any combination of the dozens of graphs, values, plots and data that are available.
Simcenter Motorsolve is the most powerful and intuitive package for design and analysis for rotating electric machines. Simcenter 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 analyse multiple designs and generate reports with any combination of the dozens of graphs, values, plots and data that are available.
Simulating a Halbach cylinder servo motor
Simcenter MAGNET's magnetisation 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 modelling of an external, impulse magnetisation of the Halbach cylinder. Presented below is the magnetizing fixture, the resulting magnetisation pattern and performance of the servo motor.
Simcenter MAGNET's magnetisation 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 modelling of an external, impulse magnetisation of the Halbach cylinder. Presented below is the magnetizing fixture, the resulting magnetisation pattern and performance of the servo motor.
Reducing the eddy-current losses in permanent magnets by segmentation
Permanent magnet machines are increasingly popular. When dealing with high speed applications, the eddy current losses will often cause deterioration of their magnetic properties and potentially risk thermal demagnetisation.
Segmentation of the permanent magnets helps to reduce the eddy current losses and risk of damage. In this example, Simcenter MAGNET is used to investigate the effect of segmentation in a surface mounted permanent magnet machine.
Permanent magnet machines are increasingly popular. When dealing with high speed applications, the eddy current losses will often cause deterioration of their magnetic properties and potentially risk thermal demagnetisation.
Segmentation of the permanent magnets helps to reduce the eddy current losses and risk of damage. In this example, Simcenter MAGNET is used to investigate the effect of segmentation in a surface mounted permanent magnet machine.
