Mainstream’s variable frequency drive is a liquid cooled motor drive with an integrated active PFC rectifier for meeting the strict requirements of MIL-STD 461. It can be powered by a 208/230 Vac, 50/60 Hz source (such as the AC grid, a generator, or a tactical microgrid) or modified to operate from a DC source. The motor drive can be used with fluid inlet temperatures from -40° to 70°C and drive AC induction motors or AC permanent magnet synchronous motors using advanced sensorless field-oriented control.