High-power density underwater electric propulsion control device

The utility model relates to a high-power density underwater electric propulsion control device, which comprises an outer cylinder, an inner cylinder and a driver tank, wherein the driver tank comprises a front end cap and a rear end cap which are fixedly connected with the end face of the outer cylinder. A driving control system is mounted in the driver tank and comprises a radiating cushion block, a frequency converter and a variable-frequency drive controller, wherein the radiating cushion block is mounted on the inner cylinder, and the frequency converter and the variable-frequency drive controller are mounted on the radiating cushion block. The front end cap is connected with a front end cap watertight plug, and the rear end cap is connected with a rear end cap watertight plug. The high-power density underwater electric propulsion control device is compact and reasonable in structure, small in size, high in power density and capable of being applied to deep-sea detection or underwater rescue submarines and improving endurance ability of the submarines and detectors by being mounted outside cabins.