The present invention relates to an apparatus for economically charging an electric vehicle, the apparatus including: an input unit configured to receive an input of charge state information of a vehicle from a charger; a control unit configured to calcula...

The present invention relates to a client suitability test apparatus for a substation automating system with regard to IEC 61850 service between virtual intelligent electronic devices (IEDs) and clients for a plurality of IEDs, wherein the apparatus compri...

The solid oxide fuel cell according to the present invention is directed to a support type or self-support type single cell in which four sides or opposite two sides of comers of the single cell are downwardly bent in an inverted U shape and have gas chann...