Development and fundamental characteristics of co-axial MHD energy conversion device

Innovative electro-magnetic energy conversion device has been developed. This device has co-axial configuration with liquid metal filled inside under applied magnetic field. The azimuthal liquid metal flow is decelerated by Lorentz force acting as a body force. The rotational torque continuously inc...

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Autores principales:	Hidemasa TAKANA, Akira TANIDA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	functional fluid mhd power generation torque control regenerative brake wind turbine Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/1f63c2f86e234bc8a40cc781fbe4658c
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spelling	oai:doaj.org-article:1f63c2f86e234bc8a40cc781fbe4658c2021-11-26T07:00:24ZDevelopment and fundamental characteristics of co-axial MHD energy conversion device2187-974510.1299/mej.16-00500https://doaj.org/article/1f63c2f86e234bc8a40cc781fbe4658c2016-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/1/4_16-00500/_pdf/-char/enhttps://doaj.org/toc/2187-9745Innovative electro-magnetic energy conversion device has been developed. This device has co-axial configuration with liquid metal filled inside under applied magnetic field. The azimuthal liquid metal flow is decelerated by Lorentz force acting as a body force. The rotational torque continuously increases with excessive kinetic energy converted into electric energy by increasing magnetic field. The static and dynamic characteristics of the device have experimentally investigated with AC servo-motor as a driving source. The experimental results show that the rotational torque can be controlled with electric power extraction by applied magnetic field and external load resistance. The liquid metal inside the device is driven in the azimuthal direction directly by the electrically insulated propeller on the shaft and the electric power is extracted with proportionally to the square of shaft rotational speed. The required rotational torque increases with applied magnetic flux density due to dominant eddy current induced by non-uniform magnetic field in azimuthal direction. The constant rotational speed can be maintained with power generation by controlling applied magnetic flux density even for increasing input torque. It was clarified that the time constant for the control of the rotational speed becomes smallest when the changing time of applied magnetic flux density and that of input torque are equal.Hidemasa TAKANAAkira TANIDAThe Japan Society of Mechanical Engineersarticlefunctional fluidmhd power generationtorque controlregenerative brakewind turbineMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 1, Pp 16-00500-16-00500 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	functional fluid mhd power generation torque control regenerative brake wind turbine Mechanical engineering and machinery TJ1-1570
spellingShingle	functional fluid mhd power generation torque control regenerative brake wind turbine Mechanical engineering and machinery TJ1-1570 Hidemasa TAKANA Akira TANIDA Development and fundamental characteristics of co-axial MHD energy conversion device
description	Innovative electro-magnetic energy conversion device has been developed. This device has co-axial configuration with liquid metal filled inside under applied magnetic field. The azimuthal liquid metal flow is decelerated by Lorentz force acting as a body force. The rotational torque continuously increases with excessive kinetic energy converted into electric energy by increasing magnetic field. The static and dynamic characteristics of the device have experimentally investigated with AC servo-motor as a driving source. The experimental results show that the rotational torque can be controlled with electric power extraction by applied magnetic field and external load resistance. The liquid metal inside the device is driven in the azimuthal direction directly by the electrically insulated propeller on the shaft and the electric power is extracted with proportionally to the square of shaft rotational speed. The required rotational torque increases with applied magnetic flux density due to dominant eddy current induced by non-uniform magnetic field in azimuthal direction. The constant rotational speed can be maintained with power generation by controlling applied magnetic flux density even for increasing input torque. It was clarified that the time constant for the control of the rotational speed becomes smallest when the changing time of applied magnetic flux density and that of input torque are equal.
format	article
author	Hidemasa TAKANA Akira TANIDA
author_facet	Hidemasa TAKANA Akira TANIDA
author_sort	Hidemasa TAKANA
title	Development and fundamental characteristics of co-axial MHD energy conversion device
title_short	Development and fundamental characteristics of co-axial MHD energy conversion device
title_full	Development and fundamental characteristics of co-axial MHD energy conversion device
title_fullStr	Development and fundamental characteristics of co-axial MHD energy conversion device
title_full_unstemmed	Development and fundamental characteristics of co-axial MHD energy conversion device
title_sort	development and fundamental characteristics of co-axial mhd energy conversion device
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/1f63c2f86e234bc8a40cc781fbe4658c
work_keys_str_mv	AT hidemasatakana developmentandfundamentalcharacteristicsofcoaxialmhdenergyconversiondevice AT akiratanida developmentandfundamentalcharacteristicsofcoaxialmhdenergyconversiondevice
_version_	1718409705058992128

Development and fundamental characteristics of co-axial MHD energy conversion device

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