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Indian Institute of Technology (IIT) Patna 
Dielectric elastomer annular diaphragm based micro hydroelectric generator 
Dr. Karali Patra, Mr. S. K. Sahu, Mr. A. R. Jithin, Mr. V. J. G. Bharadwaj 
Indian Institute of Technology (IIT) Patna 
Application type:
Applied - 2017-12-19 
Application Number:
Applied at:
Entered by:
Indian Institute of Technology (IIT) Patna 
The present disclosure relates to a dielectric elastomer diaphragm based micro hydroelectric generator to convert hydraulic energy to electrical energy. In one embodiment, the hydro-generator includes a fixed frame, and a movable frame including a dielectric elastomer transducer unit, the movable frame is positioned at a predetermined distance from the fixed frame. The hydro- generator further includes a transmission mechanism system which is attached to the fixed frame, the transmission mechanism system including a water wheel, a power shaft and a moving link. The dielectric elastomer transducer unit of the movable frame and the movable link of the transmission mechanism system are coupled via a flexible cable or sting. During the flow of water from any ambient source impacts on water wheel of the transmission mechanism system, the combination of water wheel, powering shaft and movable link converts rotary motion of water wheel into translatory motion of the moving link, the dielectric elastomer stretches and relaxes as it is directly connected to movable link by the help of flexible cable thereby converting hydraulic energy 20 into electrical energy. 

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