OverviewModern use of motor–generatorsElectrical power handlingConversionsVariable AC voltage power supplyHigh-frequency machinesMotor–generators used to increase ride-throughModern use of the term
Motor–generator sets have been replaced by semiconductor devices for some purposes. In the past, a popular use for MG sets was in elevators. Since accurate speed control of the hoisting machine was required, the impracticality of varying the frequency to a high power AC motor meant that the use of an MG set with a DC hoist motor was a near industry-standard solution. Modern AC variable-frequency drive electronics with compatible motors have increasingly supplanted tra