The properties of the single phase magnetic electromotive force of ac motor, the amplitude of its amplitude, the position of amplitude, and the frequency of the pulsations are related to the various factors
The magnetic field generated from the electrotechnics, the three-phase alternating current (ac) is a rotating magnetic field, its speed n1 depends on current frequency f and rotating magnetic field of magnetic pole logarithmic p1, the relationship between them is: n1 = 60 f/p1
When we in the arrangement of the synchronous generator stator winding, always make it a rotating magnetic field generated by the magnetic pole logarithmic p1 logarithmic p is equal to the rotor poles, so under a certain frequency, the rotor speed n is equal to the speed of the stator rotating magnetic field n1, namely they are synchronized; In other words, there is a strict relationship between the speed and the frequency when the logarithm is certain, which is called "synchronization" in motor terms.
How do you do The frequency is the number of weeks per second of alternating current, which is an important parameter for alternating current. Synchronous generator rotor magnetic field rotates in the space of a pair of poles, the induction electric potential of the stator coil is alternating time, if the rotor has a p on the poles, the rotor rotates, the induction electric potential of the stator coil is alternating of p. According to the definition of frequency, f = pn / 60 N - generator rotor speed (RPM) P -- log of the magnetic pole. From the above, the frequency of the induction voltage of the synchronous generator has a definite relationship with the speed of the generator and the logarithmic poles of the rotor. When a generator emits an alternating current of 50Hz, the rotor is a pair of magnetic poles. When the rotor is two magnetic poles, the speed is 1500 RPM.
