An analytical approach for fast estimation of PWM harmonic losses in the stator of a concentrated winding permanent magnet machine

It is well known that 2D finite element (FE) estimation of stator losses in machines driven by the pulse width modulated (PWM) supplies may result in highly exaggerated losses. This work presents a new simple analytical approach which can predict the PWM losses in the stator laminations of a concentrated winding permanent magnet synchronous machine. Experimental set-up is used to examin the results of 2D-FE simulation and demonstrate the validity of the analytical method.