Marine electrical equipment - Introduction to marine generator sets

A: Composition and classification

Marine generator sets are mainly composed of engines (usually diesel engines), generators (electric bulbs), controllers, and auxiliary systems (such as cooling systems, lubrication systems, etc.). 

According to different functions and uses, marine generator sets can be divided into many types, including common marine diesel generator sets, emergency marine diesel generators, etc.

B: Working principle

The working principle of marine generator sets is based on the working principle of internal combustion engines. 

When the diesel engine is started, its piston reciprocates in the cylinder and drives the crankshaft to rotate through the connecting rod. The crankshaft is connected to the generator through a transmission device to drive the generator armature to rotate. Due to the residual magnetism of the magnetic pole core of the generator, the armature coil cuts the magnetic lines during rotation, generates current according to the principle of electromagnetic induction, and outputs it through carbon brushes. In this process, the rotor and stator of the generator interact with each other to convert mechanical energy into electrical energy.

C: Application range

Marine generator sets are widely used in various types of ships, including passenger ships, cargo ships, fishing boats, warships, etc. 

They can be used as the main power supply or backup power supply to provide power support for the ship's navigation, lighting, communication, navigation and other systems. At the same time, marine generator sets can also be used in offshore drilling platforms, offshore wind power generation and other fields as backup or auxiliary power supplies.

D: Maintenance and care

In order to ensure the normal operation and extend the service life of marine generator sets, regular maintenance and care work is required. 

This includes checking whether the various components of the generator set are intact, clean and tightened; checking whether the cooling system, lubrication system and fuel system are working properly; checking whether the electrical system and control system are sensitive and reliable, etc. In addition, regular inspections and replacement of wearing parts are required according to the requirements of the instruction manual.