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- W624717420 abstract "The interest in wind energy system is growing worldwide to reduce dependency onfossil fuel and to minimize the adverse impact of climate change. Currently, doubly fedinduction generator (DFIG) based variable speed wind turbine technology with gearboxis dominating the world market share. However, the problems associated with inductiongenerator based wind turbines are reactive power consumption, mechanical stress andpoor power quality. Moreover, the gearbox requires regular maintenance as it suffersfrom faults and malfunctions. Therefore, it is important to adopt technologies that canenhance efficiency, reliability and reduce system cost of wind based power generationsystem. The performance of a variable speed wind turbine can be enhanced significantlyby using a low speed permanent magnet synchronous generator (PMSG) without agearbox. The main features of PMSG based wind turbines are; gearless operation,higher efficiency, enhanced reliability, smaller size, reduced cost and low losses. Themain aim of this thesis is to develop improved control strategies for an efficient andreliable grid interface system for a gearless, direct drive variable speed wind turbine.This thesis focuses on several aspects of modelling and control of interior permanentmagnet (IPM) synchronous generator based grid connected variable speed wind turbinewith maximum power extraction (MPE). Both the indirect and direct control strategiesare addressed for IPM synchronous generator based variable speed wind turbines. Themain contributions of this thesis are; (i) development of parameter measurementmethods to determine the parameter of an IPM synchronous generator, (ii) developmentof an improved indirect vector control scheme for the IPM synchronous generator baseddirect drive variable speed wind turbine, incorporating maximum torque per amperetrajectory (MTPA) and maximum power extraction (MPE) algorithm (iii) developmentof direct torque and flux (DTFC) control scheme for the IPM synchronous generatorbased direct drive variable speed wind turbine, and (iv) development of control andpower management strategy for a three level converter based STATCOM with Supercapacitorenergy storage to enhance the performance of the proposed wind energyconversion system under various disturbances." @default.
- W624717420 created "2016-06-24" @default.
- W624717420 creator A5052288177 @default.
- W624717420 date "2014-06-01" @default.
- W624717420 modified "2023-09-27" @default.
- W624717420 title "Modelling and control of direct drive variable speed wind turbine with Interior Permanent Magnet Synchronous Generator" @default.
- W624717420 hasPublicationYear "2014" @default.
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