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DC generator is mainly composed of generator casing, magnetic pole iron core, magnetic field coil, armature and carbon brush. Working principle of power generation: when the diesel engine drives the generator armature to rotate, because there is residual magnetism in the magnetic pole core of the generator, the armature coil cuts the magnetic line of force in the magnetic field. According to the principle of electromagnetic induction, current is generated by magnetic induction and output current through carbon brush.

The alternator is mainly made of magnetic materials, several permanent magnets (called rotors) with alternating north and south poles, and armature coils (called stators) made of silicon cast iron and wound with series coils. Working principle of power generation: the rotor is driven by the diesel engine to cut the magnetic line axially. The alternating magnetic field is formed in the coil core by the alternating magnetic poles in the stator. When the rotor rotates for one circle, the direction and size of the magnetic flux are changed many times. Due to the transformation of the magnetic field, the induction current will be generated in the coil, and the current will be delivered by the stator coil. In order to protect the electrical equipment and maintain its normal operation, the current generated by the generator needs to be regulated and controlled by the regulator.

3. The first diesel engine in the world

The first diesel engine in the world was born in Germany in 1893. After the invention of the steam engine, Rudolf Diesel, the son of a German leather dealer, showed great interest in the "steam engine" when he was 34 years old (1892). At the age of 34 (1892), he obtained the invention patent for a mechanical device that can press air into the container and mix it with pulverized coal until it is compressed and fired to provide power. In the second year, man company in augusburg, Germany, based on this patent, produced the world's first prototype diesel engine, which was named diesel engine. Like all new things, diesel engine has experienced a long process from birth to continuous improvement. Mr. dessel died at the age of 55, unable to see his engine installed in a car. Ten years later, man finally launched the first diesel engine on a truck at the Berlin auto show. Later, Mercedes Benz, based in Mannheim, built the diesel engine with a precombustion chamber and installed it in its own truck. It was not until 1936, 23 years after Mr. diesel's death, that Mercedes Benz made the first car with a diesel engine.

Until now, the English name of diesel engine is still diesel engine.

4. The first diesel generator set in the world

In 1831, British physicist and chemist Michael Faraday (1791-1867) discovered in the experiment that when the magnet moves in the coil, the coil will produce current, which is the phenomenon of electromagnetic induction that we are familiar with today. According to his own research results, Faraday developed the first generator in the world, which made a great contribution to the utilization of electric energy for human beings. Because Faraday has made outstanding achievements in electrical research, later generations named the capacity unit of capacitor as "farad", which is represented by the letter "F".

In 1866, Ernst Werner von Siemens, an electrician and industrialist in Germany In 1870, Z. T. Kramer (1826-1901) of Belgium developed a self-excited DC generator. After continuous improvement, the motor technology has become mature. In 1877, the real practical generator began to enter the stage of commercial production.

2、 Precautions for operation of diesel generator set

1. Manual test run

Generator manual start: after testing the alarm system is normal, switch the control switch to the manual (man) position, the generator can start automatically. Manual shutdown of generator: switch the control switch to stop position or press the red emergency stop button to stop the generator. urgent