A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by turbines such as water turbines, steam turbines, diesel engines, or other power mechanisms. These turbines convert the energy from water flow, air flow, fuel combustion, or nuclear fission into mechanical energy, which is then transmitted to the generator and converted 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 law of electromagnetic induction and the law of electromagnetic force. Consequently, the general principles of their construction are: to form magnetic and electrical circuits by using appropriate magnetic and conductive materials, which interact through electromagnetic induction to produce electromagnetic power and achieve the purpose of energy conversion.