The drop of water forms kinetic energy under the action of gravity. Water is diverted from high-level water sources such as rivers or reservoirs to low-level locations. The pressure or flow of water is used to impact the turbine. and rotate it, thereby converting the energy of the water into mechanical energy. The water turbine drives the generator to rotate, cutting the magnetic field lines to generate alternating current.
Actually, the water energy you are referring to refers to gravitational potential energy.
When we build a dam and store water, we accumulate a large amount of gravitational potential energy. Open a gate on the dam and install a generator. The water flowing through the gate turns the generator turbine. At this moment, the potential energy of gravity is converted into kinetic energy. Kinetic energy inelectric energy. At this time, convert the gravitational potential energy of the water into electrical energy.
Why does water at high altitudes have gravitational potential energy to drive a generator to produce electricity?
Generators are usually composed stators, rotors, end covers, bearings and other elements. Components. The stator consists of the stator core, wire windings, machine base and other structural parts that secure these parts. The rotor is composed of rotor core winding (or magnetic pole, magnetic yoke), retaining ring, center ring, slip ring, fan and a rotating shaft.
The stator and rotor of the generator are connected and assembled by the bearings and end covers, so that the rotor can rotate in the stator and perform the kick movemente magnetic lines of force, thus generating an induced effect. electric potential, which is discharged through the terminals and connected to the circuit, an electric current is generated.
A general generator first converts the energy contained in various primary energy sources into mechanical energy through the main engine, then converts it into electrical energy through the generator, and then sends it to various places of energy consumption via the power supply. transport and distribution networks.
Type
Due to the different forms of primary energy, different generators can be manufactured.
1. Hydraulic generators can be made using hydraulic resources and hydraulic turbines of different capacities and speeds can be made using the position difference. As for the downward flow, the energy of the water flow drives the turbine to produce electricity. However, the disadvantage is that if theposition difference is too small and the flow speed is not fast enough, stable power supply cannot be provided.
At present, there is a way to generate electricity using ocean currents, but the generator is often damaged due to too strong ocean currents or excessive pressure under the surface of the sea.
2. Using coal, oil and other resources, combined with boilers and steam turbines, turbogenerators can be made. Most of these generators are high speed motors (3000 rpm).
3. Additionally, there are different types of generators that use wind energy, atomic energy, geothermal energy, tides and other energies.
? Detailed information:
Development history
When electr inductionomagnetic was discovered, the method of generating alternating current was known. The first finished products were developed by Michael Faraday and Polit Pixie.
In 1866, Werner von SiemensHe proposed the principle of operation of the generator and an engineer from Siemens made humanity's first alternator.
In 1882, British electrician James Gordon built a large two-phase alternator. Lord Kelvin and Sebastian Ferranti developed the first alternators with frequencies between 100 Hz and 300 Hz.
In 1891, Nikola Tesla patented a “high frequency” alternator (15,000 Hz).
After 1891, polyphase alternators were used to provide power. The alternating current frequency of later alternators was generally designed between 16 Hz and 100 Hz and was used with arc lamps, incandescent lamps or electric motors.
When the magnetic field around a conductorctor changes, an induced current is generated in the conductor. Typically, the rotating magnet is called a rotor, and the stationary group of conductors wound in a coil around an iron core, called a stator, produces an electric current when it passes through a magnetic field.
(1) The purpose of building a river dam is to increase the water level upstream. The mass of water remains unchanged, the height increases, and the gravitational potential energy increases when the mass of water remains unchanged. As water falls, gravitational potential energy is converted into kinetic energy. The kinetic energy increases, thus causing the generator to produce electricity.
(2) The generator works based on the principle of electromagnetic induction. It consumes mechanical energy and obtains electrical energy. It is a device that converts mechanical energy into electrical energy.
So the answer is: movement; linenelectromagnetic induction.