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High Quality Performance of Three Level Inverter Based AC Drives

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2016

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Abstract (2. Language): 
Direct torque control (DTC) is one of the most important control techniques used in induction motor drives to obtain high-performance torque control and speed response. However, the classical DTC-SVM has disadvantage through transient, steady state and low speed. One of the most important defects is a high torque ripple and harmonics in stator current. In this paper, the proposed control system for solve these problems by utilizing space vector modulation upon the reference torque and flux. In this proposed control technique, PI flux and PI torque controller are designed to investigation estimated flux and torque with good tracking and fast response with reference torque and there is no steady state error. In addition, design PI flux and PI torque controller are utilized to improve voltage in d-q axis which applied to SVM. Also, the power factor is improved in input side to reduce distorts in input current and voltage waveform. Therefore, reduce power quality associated with it. A dual boost converter is implemented on the front side circuit of the proposed system for improving power factor. The DTC-SVM is applied to the three-phase three-level neutral point clamped diode inverter (NPC) which fed the induction motor drive. This paper confirms using the Space Vector Pulse Width Modulation (SVPWM) technique for derivation of switching states. The proposed control is implemented using MATLAB/Simulink software package. Resulting tests which obtain from the proposed control is corrector of the power factor into near unity and improved overall performance induction motor.
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REFERENCES

References: 

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International Journal of Science and Engineering Investigations, Volume 5, Issue 58, November 2016 103
www.IJSEI.com Paper ID: 55816-15
ISSN: 2251-8843
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