Permanent magnet brushless DC motors (PMBLDC) are used in a wide range of applications thanks to their high-power density and ease of control. In particular, outer runner PMBLDC is utilized in direct drive wind turbines and small electric vehicles such as golf cars and electric bikes to mitigate the need for mechanical transmission or gearboxes. This can improve the efficiency of the whole system which results in a longer battery lifetime. In this application note, the performance of an out-runner radial flux BLDC motor, with surface-mounted permanent magnets, is assessed using EMWorks2D software.

A transformer can cost millions of dollars. That’s why the simulation and validation of all performance aspects of a transformer can save you money and time. The popular EMWorks’s low frequency software package, EMS, is the preferred simulations platform for many transformer’s designers and manufacturers because it addresses all aspects of a transformer’s design.

Since magnetostriction effect is directly related to the magnetic force density and the displacement, i.e., related to stress, in the core and tank, in the following paragraphs will present such results using EMS and SolidWorks. The total rigid body force acting on the windings is equally important because it can cause the windings to vibrate or even break altogether.