Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation

Cogging is an attraction of magnetism between permanent magnets and soft ironcore lamination in a conventional electric ironcore generator. The presence of cog in the generator is seen somehow restricted the application of the generator in an application where low rotational torque is required. Cog...

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Main Authors:	A. R., Razali, F. R. M., Romlay, Syaiful, Azlan, Mohd Razali, Hanipah, Mohd Azri Hizami, Rasid
Format:	Conference or Workshop Item
Language:	English
Published:	The Institute of Physics 2018
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/23117/ http://umpir.ump.edu.my/id/eprint/23117/ http://umpir.ump.edu.my/id/eprint/23117/1/Open%20circuit%20V-I%20characteristics%20of%20a%20coreless%20ironless%20electric%20generator%20for%20low%20density%20wind%20power%20generation.pdf

id	ump-23117
recordtype	eprints
spelling	ump-231172019-02-08T01:29:44Z http://umpir.ump.edu.my/id/eprint/23117/ Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation A. R., Razali F. R. M., Romlay Syaiful, Azlan Mohd Razali, Hanipah Mohd Azri Hizami, Rasid TJ Mechanical engineering and machinery Cogging is an attraction of magnetism between permanent magnets and soft ironcore lamination in a conventional electric ironcore generator. The presence of cog in the generator is seen somehow restricted the application of the generator in an application where low rotational torque is required. Cog torque requires an additional input power to overcome, hence became one of the power loss sources. With the increasing of power output, the cogging is also proportionally increased. This leads to the increasing of the supplied power of the driver motor to overcome the cog. Therefore, this research is embarked to study fundamentally about the possibility of removing ironcore lamination in an electric generator. This research deals with removal of ironcore lamination in electric generator to eliminate cog torque. A confinement technique is proposed to confine and focus magnetic flux by introducing opposing permanent magnets arrangement. The concept is then fabricated and experimentally validated to qualify its no-load characteristics. The rotational torque and power output are measured and efficiency is then analyzed. Results indicated that the generator produced RMS voltage of 416VAC at rotational speed of 1762 RPM. Torque required to rotate the generator was at 2Nm for various rotational speed. The generator has shown 30% lesser rotational torque compared to the conventional ironcore type generator due to the absent of cogging torque in the system. Lesser rotational torque required to rotate has made this type of generator has a potential to be used for low wind density wind turbine application. The Institute of Physics 2018 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23117/1/Open%20circuit%20V-I%20characteristics%20of%20a%20coreless%20ironless%20electric%20generator%20for%20low%20density%20wind%20power%20generation.pdf A. R., Razali and F. R. M., Romlay and Syaiful, Azlan and Mohd Razali, Hanipah and Mohd Azri Hizami, Rasid (2018) Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation. In: IOP Conference Series: Materials Science and Engineering: International Conference On Innovative Technology, Engineering And Sciences (ICITES 2018), 01-02 April 2018 , UMP Library, Pekan. pp. 1-7., 342 (1). ISSN 1757-8981 http://iopscience.iop.org/article/10.1088/1757-899X/342/1/012010/meta
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery A. R., Razali F. R. M., Romlay Syaiful, Azlan Mohd Razali, Hanipah Mohd Azri Hizami, Rasid Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
description	Cogging is an attraction of magnetism between permanent magnets and soft ironcore lamination in a conventional electric ironcore generator. The presence of cog in the generator is seen somehow restricted the application of the generator in an application where low rotational torque is required. Cog torque requires an additional input power to overcome, hence became one of the power loss sources. With the increasing of power output, the cogging is also proportionally increased. This leads to the increasing of the supplied power of the driver motor to overcome the cog. Therefore, this research is embarked to study fundamentally about the possibility of removing ironcore lamination in an electric generator. This research deals with removal of ironcore lamination in electric generator to eliminate cog torque. A confinement technique is proposed to confine and focus magnetic flux by introducing opposing permanent magnets arrangement. The concept is then fabricated and experimentally validated to qualify its no-load characteristics. The rotational torque and power output are measured and efficiency is then analyzed. Results indicated that the generator produced RMS voltage of 416VAC at rotational speed of 1762 RPM. Torque required to rotate the generator was at 2Nm for various rotational speed. The generator has shown 30% lesser rotational torque compared to the conventional ironcore type generator due to the absent of cogging torque in the system. Lesser rotational torque required to rotate has made this type of generator has a potential to be used for low wind density wind turbine application.
format	Conference or Workshop Item
author	A. R., Razali F. R. M., Romlay Syaiful, Azlan Mohd Razali, Hanipah Mohd Azri Hizami, Rasid
author_facet	A. R., Razali F. R. M., Romlay Syaiful, Azlan Mohd Razali, Hanipah Mohd Azri Hizami, Rasid
author_sort	A. R., Razali
title	Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
title_short	Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
title_full	Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
title_fullStr	Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
title_full_unstemmed	Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation
title_sort	open circuit v-i characteristics of a coreless ironless electric generator for low density wind power generation
publisher	The Institute of Physics
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/23117/ http://umpir.ump.edu.my/id/eprint/23117/ http://umpir.ump.edu.my/id/eprint/23117/1/Open%20circuit%20V-I%20characteristics%20of%20a%20coreless%20ironless%20electric%20generator%20for%20low%20density%20wind%20power%20generation.pdf
first_indexed	2023-09-18T22:34:31Z
last_indexed	2023-09-18T22:34:31Z
_version_	1777416505873399808

Open circuit V-I characteristics of a coreless ironless electric generator for low density wind power generation

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