Simulation of PMSM electric propulsion direct torque control with twelve voltage vectors

doi:10.16411/j.cnki.issn1006-7736.2015.01.018

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Journal of Dalian Maritime University ›› 2015, Vol. 41 ›› Issue (1) : 100-103. DOI: 10.16411/j.cnki.issn1006-7736.2015.01.018

CAO Lin-bai, ZHONG Hong-ge^*, ZHANG Zhi-yuan, LI Xiao-qing

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Abstract

To solve the severe torque ripple problems for direct torque control system of permanent magnet synchronous motor in ship electric propulsion, space voltage vector and magnetic chain fans were subdivided by using twelve voltage vectors in direct torque control, which enhanced the torque control effect of each voltage vector. Compared with traditional six voltage vectors system, the proposed method can effectively reduce about 30%~40% of the torque ripple.Specific switch table was given by analyzing, and simulation model was established with MATLAB. Simulation results verify the effectiveness of the proposed control method in reducing the torque ripple.

Key words

electric propulsion / permanent magnet synchronous motor / direct torque control / twelve voltage vectors / torque ripple

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CAO Lin-bai,ZHAO Hong-ge^*,ZHANG Zhi-yuan,LI Xiao-qing. Simulation of PMSM electric propulsion direct torque control with twelve voltage vectors[J]. Journal of Dalian Maritime University. 2015, 41(1): 100-103 https://doi.org/10.16411/j.cnki.issn1006-7736.2015.01.018

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