Performance of field oriented controlled open-end winding induction motor drive using nearest sub-hexagonal center pwm techniques

Mahamkali Ranjit, Teegala Brahmananda Reddy, Munagala Surya Kalavathi

Performance of field oriented controlled open-end winding induction motor drive using nearest sub-hexagonal center pwm techniques

Číslo: 2/2018
Periodikum: Acta Electrotechnica et Informatica
DOI: 10.15546/aeei-2018-0012

Klíčová slova: Field oriented control (FOC), Induction motor drive, Nearest sub-hexagonal centre PWM (NSHCPWM), Open-end winding induction motor (OEWIM).

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Anotace: In this article, performance of field oriented controlled open-end winding induction motor drive (FOCOEWIMD) using nearest sub-hexagonal centre PWM (NSHCPWM)technique is proposed. In the proposed work, two 2-level inverters are used on either side of OEWIM drive to obtain the three-level output voltage. To generate the control signals for the two inverters, NSHCPWM technique is used. In the proposed method reference vector is realized with two components, based on the tip of the reference vector location nearest sub-hexagonal centre is identified, which is one of the switching vector used to generate the control signals for inverter-I and the other component is realized using inverter-II by mapping into the inner sub-hexagon. So that one inverter is used as switching inverter and the other is as clamping inverter. Ripples in torque and stator current are also reduced in the proposed work over conventional SVPWM techniques. Proposed work is analyzed theoretically and the same can be realized using MATLAB/SIMULINK and the corresponding results are presented for different modulation index.