Giovanni fcb
giovanni fcb

Synchronous Motor Operation

When acting as a synchronous electric motor, electric power is supplied to the machine by the application of three-phase alternating voltages to the terminals of the stator windings, in addition to the rotor field windings being fed by a DC voltage source.

Since the voltages applied to the stator windings can be alternated and three-phase, they will travel in them, a three-phase set of alternating currents of the same frequency as the voltage, thus enabling these three-phase currents to generate alternating magnetic fields capable of varying in time.

bell gosset slingle phase

However, through the spatial arrangement found in the stator windings, the time-varying magnetic fields can also cross the stator so that the resulting magnetic field rotates around the circumference of the stator at angular velocity according to the alternating voltage frequency Applied in the windings. The field that circulates around the entire circumference of the stator is also called the rotating field.

Thus, if one of the poles of the constant time magnetic field produced by the rotor field winding communicates with the resulting rotating field of the stator, it will tend to align with the opposite signal pole.

Comments Off on Synchronous Motor Operation
Categories: Uncategorized

Electromagnetism and Methods of Departure

The moment an electric current passes through a conductor, a kind of magnetic field will be generated around it. The principles of magnetism are considered as an extremely important part of electricity, since in addition to electric motors, electromagnets are used in numerous electrical components.

The electric motor is a machine that converts electrical energy into mechanical energy, rotating motion. This machine has a simplified construction and a low cost, besides being very versatile and non-polluting. In the course of its technological development, the electric motor has become one of the most important inventions of man.

Its purpose is basically the drive of machines, mechanical equipment and appliances, among others, no less important. Its fundamental principles of operation, construction and starting methods must be analyzed and respected to ensure an application.

The motors T169436 are controlled by means of starters, the most used are direct or reversing starter, which drives small motors; The start star triangle, which acts in the drive of large motors without load; The compensating start, which drives large motors with load; Starting with soft-starter, to drive large motors with load; And starting with frequency inverter, for small and large motors.

Comments Off on Electromagnetism and Methods of Departure
Categories: Uncategorized