Brushless DC, Stepper and Switched Reluctance Motors

The field distribution at various positions can be considered independent of previous positions. A snapshot approach can be used to determine the characteristics of the machine. In BLDC motors the torque vs. position and back EMF vs. position, and for switched reluctance and stepper motors, flux vs. current vs. position can all be computed with Opera-2d/ST and Opera-3d/TOSCA.

The rotating modules Opera-2d/RM and Opera-3d/CARMEN may be useful for considering eddy currents induced in the permanent magnets of BLDC and hybrid steppers. The external circuit and mechanical coupling options in Opera-2d/RM enable the dynamic behaviour to be determined more precisely.

For more information on brushless DC, stepper and switched reluctance motor design within Opera or the machines environments please visit our applications site at: motor-design-software.com