Modeling, analysis and design of SPWM current controlled multilevel inverter fed PMSM drive

This paper deals with the modeling, analysis and design of SPWM (Sinusoidal Pulse Width Modulation) controlled multilevel inverter fed PMSM (Permanent Magnet Synchronous Motor) drive. The concept of vector control is applied in PMSM to obtain linear dynamics similar to DC motor and the concept of SPWM is applies to produce the controlled switching pulses to multilevel inverter. The five level cascaded inverter fed PMSM drives are developed in MATLAB/SIMULINK environment using simpower system toolboxes. The performance of the proposed drive system is obtained under various operating conditions.