History of asynchronous motors

Asynchronous motor was invented by Italian physicist and electrical engineer ferraris in 1885. 1888 put forward the experimental report, and described the rotating magnetic field strictly and scientifically, which laid the foundation for the development of asynchronous motor and self-starting motor in the future. Ferraris thinks that the theory of rotating magnetic field and the new products he developed are far more valuable in science than in matter, so he deliberately did not apply for a patent for his invention, but showed these latest achievements to the public in the laboratory. He also advocates the use of communication systems. In the same year, nikola tesla obtained the patent of induction motor in the United States. A year later, Mikhail Dobrovski invented the squirrel-cage asynchronous motor. Asynchronous motors have developed rapidly. The rated power of the same size asynchronous motor is increased from 5.5kW in 1897 to 74.6kW in 1976. Squirrel cage asynchronous motor is the most widely used asynchronous motor.