synchronous condenser(In electrical engineering, a synchronous condenser (or synchronous compensator) is a device identical to a synchronous generator or motor, but whose shaft is not connected to anything.[1] Its purpose is not to convert mechanical power to electric power, or vice versa, but to adjust conditions on the transmission system. Its field is controlled by a voltage regulator to either generate or absorb reactive power as needed to adjust the grid's voltage or to improve power factor. wiki Alexander Demidov)
