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Fundamental study and optimization of outer-rotor hybrid excitation flux switching generator for grid connected wind turbine applications

Mohamud Arab, Abdifatah (2016) Fundamental study and optimization of outer-rotor hybrid excitation flux switching generator for grid connected wind turbine applications. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Effective generation of energy enables commercial and industrial facilities to minimize production costs, increase profits, and stay competitive. Most of electrical energy consumed in industrial facilities is received from electrical generators. Therefore it is necessary to perform research in order to develop advanced electric generators with less cost and high efficiency.There has been a recent interest in flux switching generators (FSG) in which all the flux sources are positioned in the stator that make the rotor simple, robust and brushless. Hence, this project presents an operating principle of a new proposed outer-rotor hybrid excitation flux switching generator. In this Generator a combination of a permanent magnet (PM) and field excitation coil (FEC) are used as the main flux sources. Additional FEC can be used to control the flux so that constant voltage can be produced at various wind conditions. Moreover, twelve coil tests, Three Phase coil test flux excited by PM only, Back-EMF at various speed and stack-length conditions, magnetic flux strengthening at various current densities and flux distribution are investigated by using JMAG software. The result shows that the generated voltage is directly proportional with the change of speed and stack-length and the size of the improved stack-length design has incremented 7.4 times of the initial design. Moreover, another technique of improving induced B-EMF was proposed which is deterministic optimization method (DOM).The parameters of the design are optimized one at a time starting from the rotor dimensions followed by the stator parts such as PM, FEC and AC and the improved design indicated a higher output voltage.

Item Type: Thesis (Masters)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2000-2891 Dynamoelectric machinery and auxiliaries
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 23 Jan 2017 02:38
Last Modified: 23 Jan 2017 02:38
URI: http://eprints.uthm.edu.my/id/eprint/8753
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