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- W2372920295 abstract "In order to enhance the output power of permanent magnet synchronous motor(PMSM) and reduce voltage and current level of the per phase winding,the multi-phase or multi-unit windings have been often used in the superpower machine designs.Looking a five-unit direct drive low-speed and high-torque PMSM as research object,the multi-unit PMSM voltage and electromagnetic torque equations were established.Nevertheless,when only part of units were operating,analytical expressions of torque ripple produced by the multi-unit PMSM under different quantities and positions were deduced through co-magnetic energy method.The injected 3rd harmonic current was applied to reject torque ripple.Through the numerical analysis and experiments,the results can be seen that mathematical model of this multi-unit motor is accurate and the torque ripple reduction method is effective.The torque ripple can be reduced up to 3.5% when part of units is running.Finally the mathematical model and the torque ripple and its reduction can be conditionally extended to the analysis of multi-unit PMSM with different number of units." @default.
- W2372920295 created "2016-06-24" @default.
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- W2372920295 date "2012-01-01" @default.
- W2372920295 modified "2023-09-28" @default.
- W2372920295 title "Mathematical model and torque ripple reduction for multi-unit permanent magnet synchronous motor" @default.
- W2372920295 hasPublicationYear "2012" @default.
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