Abstract-
Permanent magnet synchronous motors (PMSM) are becoming popular over Induction machines in the field of modern variable speed AC drives especially in electric vehicle (EV) and hybrid EV. Its advantages include high power density,high torque to current ratio, high efficiency and ease of control.Field Oriented Control of PMSM can be easily implemented usingdynamic model. Torque ripple in permanentmagnet synchronousmotors is generally undesirable. Superior performance of MultiLevel Inverter (MLI) over two-level inverter can be utilizedto improve the performance of the PMSM drive system. Inthis study both SPWM (Sinusoidal Pulse Width Modulation)based 2-level, 3-level and 5-level inverter fed PMSM drive wereconsidered. These techniques are studied through simulation in MATLAB/SIMULINK environment and the performances of both the techniques are compared. The effectiveness of MLI fed driveover 2-level are verified from the sim ulation results.
Permanent magnet synchronous motors (PMSM) are becoming popular over Induction machines in the field of modern variable speed AC drives especially in electric vehicle (EV) and hybrid EV. Its advantages include high power density,high torque to current ratio, high efficiency and ease of control.Field Oriented Control of PMSM can be easily implemented usingdynamic model. Torque ripple in permanentmagnet synchronousmotors is generally undesirable. Superior performance of MultiLevel Inverter (MLI) over two-level inverter can be utilizedto improve the performance of the PMSM drive system. Inthis study both SPWM (Sinusoidal Pulse Width Modulation)based 2-level, 3-level and 5-level inverter fed PMSM drive wereconsidered. These techniques are studied through simulation in MATLAB/SIMULINK environment and the performances of both the techniques are compared. The effectiveness of MLI fed driveover 2-level are verified from the sim ulation results.
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