In the era of electrification, heat, energy, wind, and atomic energy are all inseparable from the conversion of energy into electrical energy. These energy conversion processes cannot be separated from the application of magnetic fields.
1. Application of generator:
The generator is composed of a magnet system, an armature with a current coil wound on a magnetic material, and a rotating machine that makes the armature rotate. When the generator works, the rotating machinery makes the armature rotate, and the coil on the armature rotates in the magnetic field generated by the magnet system. When the magnetic field lines of the magnetic field are cut, due to the principle of electromagnetic induction, an induced electromotive force is generated in the coil. The current coil is Electric current is generated when it is connected. Then the generator starts to generate electricity.
2. Application of the motor:
The structure of the motor is similar to that of the generator. It is also composed of a magnet system, an armature with a current coil wound on a magnetic material, and a rotating machine that makes the armature rotate. Constituted. However, when the motor is working, current is passed through the current coil of the armature from an external power source. According to the principle of the motor, the armature will be rotated by the action of the magnetic field.
3. Application of transformer:
The structure of the transformer is to wind two sets of current-carrying coils on a magnetic core made of magnetic materials, called windings, one of which is the input current, called the input winding or primary winding; the other is the output current, called It is the output winding or secondary winding. The input voltage and current magnetize the transformer core through electromagnetic induction, and the magnetized transformer core causes the secondary winding to generate output voltage and current through electromagnetic induction. According to the principle of electromagnetic induction, the ratio of input voltage to output voltage is proportional to the number of turns of input winding and output winding, and the ratio of input current to output current is inversely proportional to the number of turns of input winding and output winding. The loss of distribution transformers is the biggest problem. At present, amorphous distribution transformers are widely used abroad to replace silicon steel distribution transformers. The no-load loss of the former is 70%-80% lower than that of the latter, which greatly improves power distribution. It also reduces the loss in power distribution and saves a lot of power generation. The saving of power generation means the saving of power generation fuel, which correspondingly reduces the emission of greenhouse gases, thereby protecting the environment.