Operating principle:
1. Diesel Generator
The diesel engine drives the generator to operate and convert diesel energy into electrical energy.
In the cylinder of the diesel engine, the clean air filtered by the air filter is fully mixed with the high pressure atomized diesel fuel injected by the injector. Under the upward pressure of the piston, the volume decreases and the volume decreases. the temperature rises rapidly, reaching the ignition point of diesel. Diesel ignites, the gas mixture burns violently, rapidly expands in volume and pushes the piston down, which is called "work".
2. Gasoline Generator
The gasoline engine runs the generator, converting gasoline energy into electrical energy.
In the cylinder of the gasoline engine, the mixed gas burns violently, expands rapidly in volume, and pushes the piston down to do work.
Whether it is a diesel generator or a gasoline generator, each cylinder performs work in a certain order. The thrust acting on the piston becomes the force that causes the crankshaft to rotate through the connecting rod, thus driving the engine. crankshaft to rotate.
If the brushless synchronous alternator is installed coaxially with the crankshaft of the electric machine, the rotation of the electric machine can be used to drive the generator rotor using the principle of "electromagnetic induction" . The generator will produce an induced electromotive force. The charging circuit can generate current.
Detailed information:
When the generator is not connected to the load, the armature current is zero, called no-load operation. At this time, the three-phase winding of the motor stator only has the no-load electromotive force E0 (three-phase symmetry) induced by the currentt of excitation If, and its size increases with the increase in If. However, due to the saturation phenomenon in the core of the motor magnetic circuit, the two are not proportional. The curve reflecting the relationship between the no-load electromotive force E0 and the excitation current If is called the no-load characteristic of the synchronous generator.
When the generator is connected to a symmetrical load, the three-phase current in the armature winding will produce another rotating magnetic field, called the armature reaction magnetic field. Its speed is exactly equal to the speed of the rotor and the two rotate synchronously.
The armature reaction magnetic field and the excitation magnetic field of the synchronous generator rotor can be approximately considered to be distributed according to the sinusoidal law. The spatial phase difference between them depends on the temporal phase difference between the no-load electromotive force E0 et the armature current I. The armature reaction magnetic field is also linked to the state of charge.
When the generator load is inductive, the armature reaction magnetic field acts as a demagnetizer, which will cause the generator voltage to decrease; when the load is capacitive, the armature reaction magnetic field acts as a demagnetizer; a magnetizer. This will increase the output voltage of the generator.
References:
Nowadays, solar panels, wind turbines, small hydroelectricity, etc. are available. are also used.
Generators come in many forms, but their operating principles are all based on the law ofelectromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is: using suitable magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction among themselves to generate electromagnetic energy and achieve the conversion goal of energy.
The generator converts the energy form, converting potential energy, chemical energy, thermal energy, nuclear energy, etc. into electromagnetic energy
When oil is burned, chemical energy is converted into thermal energy and electromagnetic energy;
Hydroelectric energy is the conversion of energy potential in kinetic energy then in electromagnetic energy;
Heavy water extracted from water is the raw material for atomic weapons. and can release nuclear energy. After a series of conversions,electrical energy is obtained.