Numerical Analysis of Energy Conversion


Electromagnetic field distribution in an IPM machine


Vibration analysis of an electric machine for PHEV traction

Efficient energy conversion has commanded significant interest for several years. Accurate prediction of the electromagnetic force components is an integral part of modeling, control, and performance optimization in electromechanical energy converters.

Conventional control strategies typically use a system-level approach, i.e. machines are treated as electromechanical devices, which are provided with current and voltage excitations having known shapes. While this is an effective approach, it does not optimize performance by exploiting the magnetic field distribution inside the machine. Having the knowledge of force distribution, one can calculate the force components as well as the profile of local forces and their contribution to noise, vibration, deformation, and aging of the machine.

At EDEC, we have conducted detailed analysis on electromagnetic energy conversion in electric machines. We have worked on different machine topologies including Permanent Magnet Synchronous Machines, Induction machines, and Switched Reluctance Machines. These concepts are being applied towards improving efficiency of the machine, enhancing the torque and power density of the machine, analyzing vibration, thermal and acoustic noise and reducing cost and weight by optimizing active material in the machine without impacting performance.