Study on the influence of long cable on motor end overvoltage of a ship's power system

With the development of green intelligent ships, pure electric ships are expanding from small and medium-sized ships to medium and large ships, and from passenger ships and tourist ships to cargo ships. As a result, the distance between the motor and the converter equipment of some ships is relatively long. Due to the influence of long-line cable distribution parameters, overvoltage may be generated at the motor end of the motor to affect the motor insulation characteristics. Through theoretical analysis, simulation and evaluation of the side-over-voltage of Marine motor are carried out in this paper, and the correctness of the design simulation is verified by the test of a typical real ship.