A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. Its composition is complex and precise, mainly including the following parts:

　　1、 Power system

　　Core power sources, such as diesel engines, gasoline engines, water turbines, steam turbines, etc., are the power sources of generator sets. Taking a diesel engine as an example, it generates high-temperature and high-pressure gas through the combustion of fuel, which drives the piston to move and then drives the crankshaft to rotate, achieving the output of mechanical energy.

　　2、 Generator body

　　1. Stator and rotor: The generator is mainly composed of two parts: stator and rotor. The stator includes a stator core, wire winding, etc., used to generate a fixed magnetic field; The rotor includes the rotor core, windings, etc., which cut magnetic field lines in the stator magnetic field by rotation, generating induced electromotive force.

　　2. End caps and bearings: The end caps are used to fix and support the stator and rotor, while the bearings ensure that the rotor can rotate smoothly in the stator.

　　3、 Control system

　　1. Automatic switch: used to automatically switch the working state of the generator set when needed, such as switching from standby to power generation.

　　2. Excitation regulator: used to regulate the excitation current of the generator to control the output voltage and current of the generator.

　　3. Monitoring and protection system: Real time monitoring of the operating status of the generator set, such as voltage, current, temperature and other parameters, and automatic protection operation in case of abnormal situations, such as shutdown or alarm.

　　4、 Auxiliary system

　　1. Silencing system: Reduce noise pollution during the operation of the generator set.

　　2. Shock absorption system: reduces the vibration generated during the operation of the generator set, protects the equipment, and extends its service life.

　　3. Exhaust system: Exhaust the exhaust gas generated by the generator set to ensure a clean and safe operating environment for the equipment.

　　4. Cooling system: such as fan water tank cooler, used to dissipate the heat generated during the operation of the generator set and prevent equipment overheating.

　　In addition, the generator set may also include auxiliary equipment such as fuel tanks, starting batteries, charging indicator lights, starting relays, no-load/load conversion switches, as well as battery packs and their charging and discharging protection devices, collectively forming a complete power station automation control system.

　　In general, a generator set is a complex mechanical equipment composed of multiple parts such as a power system, generator body, control system, and auxiliary system. These parts work together to achieve the function of converting other forms of energy into electrical energy.