Working principle of synchronous generator

Working Principle of Synchronous Generator

The working principle of synchronous generator is to convert mechanical energy into electrical energy. Its basic principle is to use electromagnetic induction to convert rotating magnetic field into electrical energy. Its working process is as follows:

The rotor is provided with a magnetic field through DC excitation, so that the magnetic fields of the rotor and stator are synchronized.

When the rotor rotates, the magnetic field inside the rotor also rotates, and at the same time, an induced electromotive force is generated in the stator coil.

The induced electromotive force in the stator coil causes current to flow, forming an electromagnetic field.

Under the action of the electromagnetic field, electric energy is output from the synchronous generator to the power grid. The speed of the synchronous generator is synchronized with the frequency of the power grid, so the speed is constant. During operation, by adjusting the DC excitation current, the output voltage and power factor of the synchronous generator can be adjusted to meet the needs of the power system. At the same time, the synchronous generator also has the function of automatically adjusting voltage and frequency. The automatic adjustment of the synchronous generator can be achieved through devices such as automatic voltage regulators and automatic frequency regulators to ensure the stability and reliability of the power system. In general, the working principle of the synchronous generator is to convert mechanical energy into electrical energy using electromagnetic induction. Its output voltage and frequency are stable, the power factor is adjustable, and it has the function of automatically adjusting voltage and frequency. It is one of the common power conversion devices in the power system.

The same principle of synchronous generator operation applies to multiple generators in large power plants. In this case, the generators need to be synchronized with the grid. This is achieved by matching the frequency and phase angle. After all generators are installed, they can be connected to the grid by synchronizing them.

In general, synchronous generators are key elements that make power systems work. By monitoring their behavior, stable operation of large power plants can be ensured.

Synchronous generator function

Synchronous generator is one of the commonly used power conversion devices in power systems. Its main functions are as follows:

Power supply: Synchronous generators can convert mechanical energy into electrical energy and supply it to the power grid.

Power factor adjustment: The power factor of the synchronous generator can be achieved by adjusting the excitation current, which can meet the power factor requirements of the power system and ensure the stability and reliability of the power grid.

Voltage regulation: Synchronous generators can regulate voltage by adjusting the excitation current to meet the voltage requirements of the power system.

Frequency regulation: The operating speed of the synchronous generator is synchronized with the grid frequency, and the grid frequency can be regulated by adjusting the speed of the mechanical input.

System stability: The output voltage and frequency of synchronous generators are stable, which has an important impact on the stability and reliability of the power system. In general, synchronous generators play an important role in the power system. They can supply electric energy to the power grid to ensure the stability and reliability of the power grid. At the same time, they can also meet the needs of the power system by adjusting parameters such as power factor, voltage and frequency.