A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by turbines, steam turbines, diesel engines, or other power machines, which convert the energy from flowing water, air flow, fuel combustion, or nuclear fission into mechanical energy, which is then transmitted to the generator. The generator then converts this mechanical energy into electrical energy.

Generators are widely used in industrial and agricultural production, technology, and daily life. There are many types of generators, but their working principles are all based on the laws of electromagnetic induction and electromagnetic force. Therefore, the general principle of their construction is: to form magnetic and electrical paths with appropriate magnetic and conductive materials that interact through electromagnetic induction, to produce electromagnetic power, and achieve the purpose of energy conversion.