By passing the combustion gases through magnetic field, magneto generator converts heat directly to electric power without moving parts. The inherent characteristic of high efficiency and low emission makes Coal fired MHD power generation technology attractive to be a potential alternative power generation method in the future. This paper presents the working principle of MHD generator and describes the coal fired MHD power plant systems and the key components in these systems. It also reviews the batch research of Department of Energy on coal fired MHD electric power generation—Proof of Concept Program from 1987 to 1993 and states some challenges remained on its way to commercial use.

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