A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by turbines such as hydro turbines, steam turbines, diesel engines, or other power mechanical devices, which transform the energy from water flow, air flow, fuel combustion, or nuclear fission into mechanical energy and then transmit it to the generator. The generator then converts this mechanical energy into electrical energy.

Generators are widely used in industrial and agricultural production, technology, and everyday life. There are many types of generators, but their operating principles are all based on the laws of electromagnetic induction and electromagnetic force. Therefore, the general principle of their construction is to use appropriate magnetic and conductive materials to form magnetic and electrical paths that induce electromagnetic forces on each other, thereby producing electromagnetic power and achieving the purpose of energy conversion.