Do you know the history of the development of the motor? Dalan Motor takes you to understand the budding and development of DC motors and AC motors!
DC motor development history:
In 1820, the Danish physicist Oster discovered the current magnetic effect, and then Ampere established Ampere's law by summarizing the mechanical forces of the current in the magnetic field.
In September 1821, Faraday discovered that the energized wire could rotate around the permanent magnet and the movement of the magnet around the current-carrying conductor. For the first time, the conversion of electromagnetic motion to mechanical motion was realized, thus establishing a laboratory model of the motor, which is considered to be the world. The first motor.
In 1822, France's Arago G. Lussac invented an electromagnet, which used a current to wind the iron in it.
In 1829, the American electrician Henry made some innovations on the Sterling electromagnet device. The insulated wire replaced the bare copper wire, which greatly improved the ability to convert electrical energy into magnetic energy.
In 1826, the German GS ohm proposed the circuit experiment law - Ohm's law.
In 1831, shortly after Faraday discovered the phenomenon of electromagnetic induction, he invented the world's first true motor, the Faraday disk generator, using electromagnetic induction. In the summer of the same year, Henry improved Faraday's motor model and made a simple device (oscillating motor).
In 1832, Sterkin invented the commutator, which improved Henry's oscillating motor and produced the world's first rotating motor capable of producing continuous motion.
In 1832, France AH Pixie opened a permanent magnet type rotary alternator in Paris, as shown in Figure 5. A year later, he installed a commutator on the generator to turn the alternating current into direct current. In the same year, the Russian-born German HFE proposed the principle of “motor-generator†– the law of 楞, which proved that the generator and the motor were reversible.
In 1845, the British Whiskey universal electromagnet replaced the permanent magnet, which is an important measure to enhance the output power of the generator.
In 1854, Danish Hert invented a self-excited motor. In 1857, British Stonestone invented a self-excited electromagnet generator.
In 1860, Italy's A. Pacinotti invented the toothed armature. In 1865, the Italian physicist Pachinu invented the ring generator armature.
In 1866, Siemens founder W. von Siemens (1816 ~ 1892) made a DC self-excited, parallel generator.
In 1870, Gram (ZTGr omme, 1826 ~ 1901) changed the T-shaped armature winding to a ring-shaped armature winding, invented the DC generator, which was hailed as the "father of the generator".
In 1873, Atene, a German engineer who studied generators, made a better-performing generator with a "drum". Siemens is well known for its invention of Atene. Therefore, Germany took Siemens as the core, vigorously developed various generators, and began to study the vehicles driven by electric motors, so Siemens made the world tram. But the motors at the time were all DC motors, only limited to driving the tram.
In 1873, the British Jan Maxwell completed the classical electromagnetic theory foundation "Electric and Magnetic" motor windings developed into drum windings, DC motors have the basic type of modern DC motors.
In 1880, Edison observed that the use of laminated iron cores could reduce temperature rise and energy consumption. In 1880, Hopkinson established the Ohm's law of magnetic circuits.
In 1882, people turned their attention to AC motors. Gordon in the United States has produced a two-phase giant generator with an output of 447 kW, a height of 3 meters and a weight of 22 tons.
In 1891, Arnold established the theory of DC armature windings.
AC motor development history:
In 1824, Nikola Tesla invented a one-way alternator.
In 1876, the original type of synchronous generators and transformers appeared in 1882. In 1885, the Hungarian engineer Dai Li and others started the transformer. In 1884, a transformer with a closed magnetic circuit was made and promoted.
In 1886, Tesla (N. Tesla, 1856 ~ 1943) also made a two-phase wound AC asynchronous motor model. In 1888 Tesla invented the AC motor. It is made according to the principle of electromagnetic induction, also known as induction motor. This type of motor is simple in structure, uses alternating current, does not need rectification, and has no spark. Therefore, it is widely used in industrial household appliances. AC motors are usually powered by three-phase AC.
In 1889, Dolly Dobrovoliski proposed a three-phase system and made a squirrel-cage AC asynchronous motor.
In 1890, the German Michael von Dorivo-Dobruwowski made a three-phase current transformer.
In 1902, Swedish engineer Danielson first proposed the concept of synchronous motor.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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