Ship electric propulsion system

Abstract

The invention discloses a ship electric propulsion system. The ship electric propulsion system is characterized in that a speed regulation control device control signal of a speed regulation control module is supplied to a driving operation control module by a speed setup device and a console controller through a field bus, and information can be controlled to be displayed in a display unit; the speed regulation control device control signal of the speed regulation control device is supplied to an engine room operation control module by an engine room in-place controller through the field bus, and information can be controlled to be displayed in an indicating unit; a magnetic coupler of the speed regulation control module is controlled by the speed regulation control device through a speed regulation actuator; and a power propulsion module is formed by a steering controller, an electric motor, a propulsion device and a speed sensor, the electric motor is connected with the propulsion device through the magnetic coupler, and the speed sensor is used for detecting the rotating speed and feeding back the rotating speed to the speed regulation control device. According to the ship electric propulsion system disclosed by the invention, the electric motor is flexibly connected with the propulsion device, the regulation on load rotating speed and torque is realized, vibration transmission and noise superposition are avoided, the service life of components is prolonged, the maintenance cost is reduced, and the stable running of the ship electric propulsion system is ensured.

Description

technical field [0001] The invention relates to a ship electric propulsion system. Background technique [0002] Compared with traditional mechanical propulsion, ship electric propulsion system uses electric motor to directly drive the propulsion device, which can effectively reduce the installed power of the ship, reduce fuel consumption, and reduce emissions. Excellent performance, strong operational flexibility, high reliability and less maintenance, small size and flexible layout, low vibration and noise, and convenient installation and maintenance. Therefore, ship electric propulsion is the direction of future development. [0003] A general marine electric propulsion system mainly consists of a generator set, a transformer, a frequency converter, an electric motor, a propulsion device and a control system. The generator set provides power to the motor through the transformer, the frequency converter and the control system control the operation of the motor, and the mo...

AI Technical Summary

Problems solved by technology

However, in most marine electric propulsion systems, the motor is rigidly connected to the propulsion device, resulting in high vibration and noise. The service life of the motor and transmission system components (such as bearings, seals, etc.) is short, the adaptability to harsh environments is poor, and the maintenance cost is high; at the same time The control system using frequency converter will generate harmonic interference to the motor, reducing the working efficiency of the motor. When the voltage drops, the frequency converter may not work, affecting the normal control of the ship

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