Selection of Voltage Vectors in Three-Level Five-Phase Direct Torque Control for Performance Improvement

Yogesh N. Tatte; Mohan V. Aware

Selection of Voltage Vectors in Three-Level Five-Phase Direct Torque Control for Performance Improvement

Yogesh N. Tatte

Mohan V. Aware

Vol. 16, No. 6, pp. 2162-2172, Nov. 2016

10.6113/JPE.2016.16.6.2162

Current distortion

Three-level five-phase DTC

Torque ripple

x-y stator flux

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Abstract

This paper presents a Direct Torque Control (DTC) strategy for the five-phase induction motor driven by a three-level five-phase inverter in order to improve the performance of the five-phase induction motor. In the proposed DTC technique, only 22 voltage vectors out of 243 available voltage vectors in a three-level five-phase inverter are selected and are divided in 10 sectors each with a width of 36º. The four different DTC combinations (DTC-I, II, III and IV) for a three-level five-phase induction motor drive are investigated for improving the performance of five-phase induction motor. All four of the DTC strategies utilize a combination of the same large and zero voltage vectors, but with different medium voltage vectors. Out of these four techniques, DTC-II gives the best performance when compared to the others. This DTC-II technique is analyzed in detail for improvements in the performance of five-phase induction motor in terms of torque ripple, x-y stator flux and Total Harmonics Distortion (THD) of the stator phase current when compared to its two-level counterparts. To verify the effectiveness of the proposed three-level five-phase DTC control strategy, a DSP based experimental system is build. Simulation and experimental results are provided in order to validate the proposed DTC technique.

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Cite this article

[IEEE Style]

Y. N. Tatte and M. V. Aware, "Selection of Voltage Vectors in Three-Level Five-Phase Direct Torque Control for Performance Improvement," Journal of Power Electronics, vol. 16, no. 6, pp. 2162-2172, 2016. DOI: 10.6113/JPE.2016.16.6.2162.

[ACM Style]

Yogesh N. Tatte and Mohan V. Aware. 2016. Selection of Voltage Vectors in Three-Level Five-Phase Direct Torque Control for Performance Improvement. Journal of Power Electronics, 16, 6, (2016), 2162-2172. DOI: 10.6113/JPE.2016.16.6.2162.