A generator is a mechanical device that converts mechanical energy into electrical energy, powered by turbines, steam turbines, diesel engines, or other power mechanisms. It transforms the energy from flowing water, air, fuel combustion, or nuclear fission into mechanical energy, which is then transmitted to the generator and converted into electrical energy.

Generators have extensive applications in industrial and agricultural production, technology, and everyday 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 principles of their construction are: to form magnetic and electrical circuits with appropriate magnetic and conductive materials for mutual electromagnetic induction, in order to produce electromagnetic power and achieve the purpose of energy conversion.