Shaft Generator

Basic Introduction to Shaft Generator
Shaft generators are widely used in various types of merchant ships, such as oil tankers, bulk carriers, container ships, etc., as well as some large yachts and engineering vessels. During ocean voyages, the main engines of ships are usually in a stable operating state, and the shaft generators can fully utilize their advantages of energy conservation and economy to provide reliable power supply for the ships.
Main working principle: the generator is equipped with a vice stator magnetic pole coil at the tail end, the rotor tail with a vice rotor power generation coil, when the vice rotor rotates, the magnetic field in the magnetic pole of the vice stator magnetic field line cuts the vice rotor winding power generation through the diode to generate DC power directly into the main rotor excitation, the main rotor magnetic pole magnetic inductance line cuts the main stator coil power generation output.
Structural Composition
Generator Body: It consists of two parts, the stator and the rotor. The stator is the fixed part, which is composed of an iron core and windings. The rotor is the rotating part, equipped with magnetic poles. It is supported at the center of the stator by bearings and rotates within the stator to generate electrical energy.
Transmission Device: It is used to connect the output shaft of the main engine and the rotating shaft of the generator. Commonly seen ones include gear transmission devices, belt transmission devices, or hydraulic couplings, etc. Its function is to smoothly transmit the power of the main engine to the generator and adjust the rotational speed and torque as required.

Control and Protection System: It includes a voltage regulator, a frequency regulator, protection relays, etc. The voltage regulator is used to maintain the stability of the generator's output voltage. The frequency regulator ensures that the output frequency meets the requirements of the ship's electrical power system. The protection relays provide protection for the generator against faults such as overload, short circuit, and undervoltage.

The advantages of the shaft generator

Ship Energy Conservation: Save fuel oil and enhance the operational efficiency of ships.
Constant Power Generation Voltage: It completely solves the embarrassing situation where the generator voltage is too low when the main engine runs at low speeds like idling speed, making it impossible to even ensure the lighting.
Reduction of Equipment Maintenance Costs: Extend the maintenance cycle of the auxiliary generator set.
Space Saving: Improve the space utilization rate of the engine room.
Compatibility with the Shore Power Systems of Ports Worldwide