Power distribution and driving system for remotely underwater operated vehicle

A power distribution and driving system for a remotely underwater operated vehicle ROV (ROV), comprises:

• a high-voltage DC power supply device, located above the water surface to provide a high-voltage DC voltage to the ROV, the high-voltage DC power supply device comprising:
• a voltage compensation module configured to:
• determine a voltage drop on a cable based on an output current of the high-voltage DC power supply device, and perform voltage drop compensation control based on the voltage drop and a target setting value of the ROV to output a stable high-voltage DC voltage;
• a DC buck conversion device, connected to the high-voltage DC power supply device through the cable;
• the DC buck conversion device being configured to:
• convert the high-voltage DC voltage to a low-voltage DC voltage to supply power to the ROV, wherein the DC buck conversion device comprises a plurality of parallel DC conversion modules, each DC conversion module equally bearing average load current to supply power to the ROV;
• and at least one thruster, the thruster comprising:
• a propeller, a synchronous motor, and a driver.