RSO: Journal Articles

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https://hdl.handle.net/20.500.14437/127

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Browsing RSO: Journal Articles by Subject "AC MHD generation"

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    Publication
    Fundamental of an AC MHD generation with singlesideexciting winding
    (Scopus, 2011)
    Intani, P.
    ;
    Buttapeng, C.
    ;
    Sasaki, T.
    ;
    Kikuchi, T.
    ;
    Harada, N.
    ;
    University of the Thai Chamber of Commerce. Research Support Office
    This paper presents the possibility to generate the alternating current (AC) electrical power by using a linear MHD generator.The singlesided exciting winding of the generator is considered. Its structure consists of a channel, an insulator and stators. The channel type is a flat rectangular and the liquid flows along the channel as a conductor. The channel wall acted as an insulatorseparates the metal fluid and stator coil. The top stator winding of the generator is connected to polyphase systems. Under this condition, it can produce a magnetic field by means of time harmonics function in the same direction of the metal fluid. Energy in the channel is extracted by inductive coils at the bottom stator. An interaction between traveling wave and metal fluid isexplained by finite element technique. The distributions of magnetic vector potential and magnetic field throughout channel are evidently shown in xyplane.Power flow in an AC MHD generator is reported with magnetic Reynolds number and slip value.The optimized value of active power is suggested by small slip value as s < 0 and small magnetic Reynolds number.
      2  20
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    Publication
    Numerical study of an AC MHD generation with doublesideexciting winding
    (Scopus, 2011)
    Intani, P.
    ;
    Buttapeng, C.
    ;
    Sasaki, T.
    ;
    Kikuchi, T.
    ;
    Harada, N.
    ;
    University of the Thai Chamber of Commerce. Research Support Office
    This paper studies physical phenomena, performance and optimal operating point of an AC MHD generator under the slip value by using a numerical simulation. The doubleside exciting winding of the generator is considered. Its structure consists of a channel, an insulator and stators. Channel type is a flat rectangular and the liquid flows along the channel as a conductor.Channel wall acted as an insulator separates metal fluid and stator coils. The top and bottom stator winding of the generator is connected to polyphase system. Under this condition, it can produce a magnetic field by means of time harmonic function in the same direction of the metal fluid. An interaction between traveling wave and metal fluid is explained by finite element method under Maxwell's equation and Ohm law. The distribution of magnetic vector potential and magnetic flux density throughout channel is evidently shown in xyplane.Power flow in AC MHD generator is evaluated by slip value. The optimal operating point of an AC MHD generator performance is reported by active power 0.99 kW, reactive power 50 kVAR, mechanical power 1.58 kW, power dissipation 0.59 kW and electrical efficiency 62.5%.
      3  14