What is the history of the synchronous motor and its？
History of synchronous generators：
Synchronous motors have a history of over one hundred years. The real beginning was in the 1880s. First, a fixed pole was used, with the pole surrounding a rotating annular armature. This was called the external pole type. An important milestone was the “three-phase generator” derived from a DC motor with a Thomson-Houston armature. The three armature coils and their common internal neutral no longer carry a three-stage commutator, but on three slip rings. The reversal of this structure, i.e. the inner pole type with rotating field and stationary armature, was also considered as a possible form and was subsequently studied. It was soon seen that the best value was found by combining three phases to form the so-called ‘rotating current system’ of the transformed AC system. These machines were equipped with ‘triple coil pairs’ in the armature, whose inner ends were connected in a star shape and whose outer ends were simply connected to three ‘long distance’ transmission lines. Hasselwand was credited with identifying the rotating currents in the function of synchronous motors, and he was the first to try it in practice. 1887 he built the first three-phase synchronous generator, which produced a power of about 2.8 kW 960 revolutions per minute, corresponding to a frequency of 32 cycles per second, known today as Hertz, or Hertz. This machine had a stationary, toroidal, three-phase armature and a rotating “inner pole magnet” with four wound convex poles, which provided the rotating field. 1891 was the year when the three-phase synchronous motor made its real breakthrough with the first big test. This is when the synchronous generator came into being.
Definition of synchronous generators：
Synchronous motors have always been the most important electromechanical power conversion devices, playing a key role in the production of electricity and in some special drive applications. And what exactly is a synchronous generator?
A synchronous motor is a type of AC motor in which the shaft rotates at the same frequency as the applied current. In other words, a synchronous motor works in the same way as an AC motor, but differs in that the total number of revolutions produced by a synchronous type of shaft is equal to an integer multiple of the frequency of the applied current. The synchronous motor does not depend on the induction current for its operation. In this type of motor, unlike induction motors, there is a multi-phase AC solenoid on the stator that generates a rotating magnetic field. In synchronous, the rotor consists of a permanent magnet that is synchronized with the rotating magnetic field and rotates synchronously with the frequency of the current applied to it.
In this article, we have tried to show you the history of synchronous motors. For your clarity, we present the definition of a synchronous motor. If you want to know more about it, you can click here.
