Power Generator

a device for converting some form of energy—for example, mechanical energy, chemical energy, heat, or luminous energy—into electric energy. The term “power generator” is a collective term. Electric generators are often called power generators. However, in a broad sense, the term “power generator” is also applied to such devices as galvanic cells, electrochemical generators, magnetohydrodynamic generators, thermionic converters, photovoltaic converters, and solar batteries.