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Research on Model Predictive Current Control of Dual Three Phase Permanent Magnet Synchronous Motor

Release date:2021-03-24  Number of views:3772   Amount of downloads:1710   DOI:10.19457/j.1001-2095.dqcd22559

    Abstract: Six phase inverter provides abundant voltage vector resources for dual three-phase permanent

magnet synchronous motor,which can make predictive current control more accurate. However,more voltage

vectors cause the problem of too much calculation. At the same time,the harmonic current of dual three-phase motor will increase the motor loss,which needs to be suppressed. Therefore,an improved model predictive current control (MPCC)algorithm was proposed. According to the characteristic that the largest vector of the outermost region is opposite to the middle vector of the sub periphery in the z1z2 sub-plane,the two vectors were combined according to a certain proportion to act on the motor in a control cycle to suppress the harmonic current. Furthermore,the stator flux linkage position was observed and the predicted voltage vector was determined according to its sector. The predicted voltage vectors were reduced to 8.The d,q axis current error term was used as the value function to eliminate the current error term of z1z2 sub-plane,so as to avoid the setting of weight coefficient. The results show that MPCC can effectively reduce the harmonic current and has good control performance.


Key words: dual three phase permanent magnet synchronous motor(DTP-PMSM);model predictive current

control(MPCC);harmonic current suppression;predictive voltage vector


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