We are building an observation class ROV operating at 100m depth in which we have used the Blue robotics T100 and T200 thrusters with basic ESCs. The battery will be off-board. So we have a 100m tether for power transmission. Since the current consumption is huge, the voltage drop across the tether will also be more. Thus we planned to supply 24V from the supply and use voltage regulator inside the hull, but the most of the regulators have strict current ratings of about 1A -4A, but one thruster itself draws upto 20A and we use 4 of those. Can anyone please help us in this problem? We need to regulate the input voltage we are giving to the ESC with higher current rating.
Thanks in Advance