V. Meenakshi ¹, G. D. Anbarasi Jebaselvi ¹, S. Paramasivam ¹

Affiliations
1 Department of Electrical and Electronics Engineering, Faculty of Electrical and Electronics Engineering, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai - 600119, Tamil Nadu, IN

Abstract

In this paper, implementation of SVPWM switching technique for a constant frequency, variable speed wind turbine is carried out. The modeling and simulation is done using MATLAB/Simulink for doubly-fed induction generator. The total harmonic distortion for various parameters like stator current, rotor speed and electro-magnetic torque of this wind electric generator has been obtained. The reduction in distortion level is higher compared to other pulse width modulation techniques.

Keywords

Control Strategy, DFIG, SVPWM, THD

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V. K. Arun Shankar ¹, S. Umashankar ¹, S. Paramasivam ²

Affiliations
1 School of Electrical Engineering, VIT University, Vellore – 632001, Tamil Nadu, IN
2 Danfoss industries Pvt. Ltd., Chennai – 600048, Tamil Nadu, IN

Abstract

Background/Objectives: This paper presents fuzzy logic based Direct Torque Control on PMSM coupled with centrifugal pump for pumping applications and the performance evaluation of the proposed method. Methods/Statistical analysis: The proposed method is compared with the other DTC schemes such as, Conventional DTC, DTC with space vector modulation (SVM), MPDTC, DDTC and Field oriented control (FOC) for the performance evaluation. The mentioned strategy is analyzed and reviewed for centrifugal pump load under, various performance features in Mat Lab simulation. To pick the best, among all above mentioned control strategies, comparison has been done at various frequencies and speeds. Findings: It is found that the proposed DTC- FLC is having less torque ripple output among all the control strategies. Various motor control parameters analyzed are electromagnetic torque, stator current, rotor speed, stator flux etc., and pump parameters like flow rate and pressure are evaluated. Application/Improvements: The proposed DTC with FLC is having less torque ripple than existing DTC and MPDTC control strategies.

Keywords

Centrifugal Pump, Direct Torque Control, Fuzzy Logic, Permanent Magnet Synchronous Motor, VFD, Space Vector Modulation.

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