A Novel Vector Control Strategy for a Six-Phase Induction Motor with Low Torque Ripples and Harmonic Currents

Energies

卷:12

MohammadHosein Holakooie¹  Asghar Taheri¹  Hamidreza Heidari²  Toomas Vaimann²  Anouar Belahcen²  Ants Kallaste²  Anton Rassõlkin² 

[1] Department of Electrical Engineering, University of Zanjan, Zanjan 45371-38791, Iran;

[2] Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, Estonia;

关键词: direct torque control;    duty cycle control;    harmonic currents;    six-phase induction motor;    torque ripple;   

DOI  :  10.3390/en12061102

来源: DOAJ

【 摘 要 】

In this paper, a new vector control strategy is proposed to reduce torque ripples and harmonic currents represented in switching table-based direct torque control (ST-DTC) of a six-phase induction motor (6PIM). For this purpose, a new set of inputs is provided for the switching table (ST). These inputs are based on the decoupled current components in the synchronous reference frame. Indeed, using both field-oriented control (FOC) and direct torque control (DTC) concepts, precise inputs are applied to the ST in order to achieve better steady-state torque response. By applying the duty cycle control strategy, the loss subspace components are eliminated through a suitable selection of virtual voltage vectors. Each virtual voltage vector is based on a combination of a large and a medium vector to make the average volt-seconds in loss subspace near to zero. Therefore, the proposed strategy not only notably reduces the torque ripples, but also suppresses the low frequency current harmonics, simultaneously. Simulation and experimental results clarify the high performance of the proposed scheme.

【 授权许可】

Unknown