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Energies 2017, 10(7), 926; doi:10.3390/en10070926

Grid Synchronization of a Seven-Phase Wind Electric Generator Using d-q PLL

1
Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Kalapet, Puducherry 605014, India
2
Department of Electrical and Electronics Engineering, University of Johannesburg, Auckland Park 2006, South Africa
3
Faculty of Engineering, Østfold University College, Kobberslagerstredet 5, 1671 Kråkeroy-Fredrikstad, Norway
*
Author to whom correspondence should be addressed.
Received: 10 May 2017 / Revised: 22 June 2017 / Accepted: 26 June 2017 / Published: 4 July 2017

Abstract

The evolving multiphase induction generators (MPIGs) with more than three phases are receiving prominence in high power generation systems. This paper aims at the development of a comprehensive model of the wind turbine driven seven-phase induction generator (7PIG) along with the necessary power electronic converters and the controller for grid interface. The dynamic model of the system is developed in MATLAB/Simulink (R2015b, The MathWorks, Inc., Natick, MA, USA). A synchronous reference frame phase-locked loop (SRFPLL) system is incorporated for grid synchronization. The modeling aspects are detailed and the system response is observed for various wind velocities. The effectiveness of the seven phase induction generator is demonstrated with the fault tolerant capability and high output power with reduced phase current when compared to the conventional 3-phase wind generation scheme. The response of the PLL is analysed and the results are presented. View Full-Text
Keywords: multi-phase induction machine; synchronous reference frame; induction generator; PWM inverter; seven phase rectifier; PLL; grid. multi-phase induction machine; synchronous reference frame; induction generator; PWM inverter; seven phase rectifier; PLL; grid.
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chandramohan, K.; Padmanaban, S.; Kalyanasundaram, R.; Bhaskar, M.S.; Mihet-Popa, L. Grid Synchronization of a Seven-Phase Wind Electric Generator Using d-q PLL. Energies 2017, 10, 926.

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