Patent ID: 9728968
Date: 2017-08-08
CPC Classifications: H02J,H02M,H02P,Y02E

Claim:
1. A device for operative connection between a subsea step out cable far end and subsea loads such as pumps, compressors and control systems, the device comprising: a motor operatively connected to the step out cable; a generator operatively connected to subsea motors of the subsea loads, wherein the motor and the generator are operatively connected so that the motor drives the generator; at least one gas and/or liquid filled vessel into which at least one of the motor and generator are arranged; wherein a length of the subsea step out cable is long enough to cause problems at frequency and power levels feasible for subsea pump and compressor motors; and wherein the device is a rotating frequency step up device and is configured to, via the step out cable, receive input electrical power at a low enough frequency to have stable transmission and the device, operatively connected to the subsea motor, deliver an output electrical frequency, amperage and voltage feasible for operation of the connected motors.