MOTOR GENERATOR

also called Motor-generator Set, apparatus for transforming or converting electric power from alternating current (AC) to direct current (DC), or vice versa, consisting of one or more motors coupled to and driving one or more generators. The motors operate from the power source available, and the generators provide power of the desired characteristics. For example, a set may be designed to convert commercially available alternating current to direct current, as in many welding applications; or it may, from the same commercial source, provide high-frequency AC power for induction heating or other purposes. Such a combination is often termed a dynamotor. The term motor generator also denotes a combination of an electric generator and a driving motor, such as a gasoline or diesel engine.