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Reduction of the 6th and 12th Harmonic in the Torque Ripple of a Salient Pole Synchronous Reluctance Machine

In this paper a reduction method for torque-ripple is evaluated. Synchronous reluctance motors (SynRM)combine highly efficient operation with low initial costs of the drive system. The disadvantage of the used salient pole rotor structure is that a strong torque-ripple could occur. To deal with this unwanted torque harmonics the classical mathematical model of the SynRM has to be enhanced. With this extended model a torque-ripple suppression method was developed which does not require detailed information of the system. These theoretical approaches were experimentally tested on a prototype to verify the performance of the enhanced drive system.