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 flowing water, air currents, 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 circuits with appropriate magnetic and conductive materials for mutual electromagnetic induction, in order to produce electromagnetic power and achieve the purpose of energy conversion.