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Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Characteristics and application of multi-phase space vector PWM (SVPWM) technology based on multi-phase permanent magnet synchronous motor (PMSM) variable speed system with high performance are presented, and experimental performances for motor and inverter are evaluated. The special PWM-Cycle of each interregnum for field oriented control (FOC) is be analyzed, and the improved strategies for performances of PWM are implemented possibly according as the noise spectrum of each switching frequency. Moreover, the study and experiment results based on a six phase PMSM show that the preponderance of efficiency and variable speed capability for multi-phase PMSM variable speed system than corresponding three phase.