What is the construction of synchronous motor?
The Construction of Synchronous Motors A synchronous motor is generally made up of two parts, a stator the stationary part of the machine that carries the armature winding in which the voltage is generated, and a rotor the rotating part of the machine that produces the main field flux.
How does a synchronous machine work?
A synchronous motor is one in which the rotor normally rotates at the same speed as the revolving field in the machine. The stator is similar to that of an induction machine consisting of a cylindrical iron frame with windings, usually three-phase, located in slots around the inner periphery.
How is a synchronous generator constructed?
In general, synchronous generator consists of two parts rotor and stator. The rotor part consists of field poles and stator part consists of armature conductors. The rotation of field poles in the presence of armature conductors induces an alternating voltage which results in electrical power generation.
What are the applications of synchronous machine?
Synchronous motors are normally used in applications in which a constant and precise speed is required. Typical applications of these low power motors are positioning machines. They are also used in robot actuators. Synchronous motors are also used in ball mills, watches, record players, and turntables.
What are the main parts of synchronous generator?
… do so, the synchronous generator is divided into 6 separate parts (nodes) including the stator, stator winding, rotor, shaft, field winding, and frame. Figure 4 shows these parts corresponding to the electrical arrangement.
Where are synchronous machines used?
What are the two types of synchronous machines?
According to the shape of the field, synchronous machines may be classified as cylindrical-rotor (non-salient pole) machines (Figure 1) and salient-pole machines (Figure 2).
Is synchronous machine AC or DC?
AC
A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles.
What is the construction of synchronous machines?
Construction of synchronous machines The rotor of a synchronous machine is a large electromagnet. The magnetic poles can be either salient (sticking out of rotor surface) or non- salient construction. Non-salient-pole rotor: # of poles: 2 or 4. Salient-pole rotor: # of poles: large number Rotors are made laminated to reduce eddy current losses.
How does an AC synchronous motor work?
That machine used a rotating armature coil, which means the power to run the motor or the power from the generator must be transmitted through the brushes and slip rings. For large machines, that is not very efficient, so AC synchronous machines are built with the armature on the stator and the field on the rotor.
What is the working principle of rotating field type synchronous machine?
In rotating field type synchronous machine, filed winding is wound on the rotor. DC supply is extended to the field winding by assembly of slip ring and carbon brush. Electrical power is supplied to the load using stationary terminals mounted on the stator.
How does a synchronous rotor work?
Instead of a permanent magnet, this machine (as do the overwhelming majority of synchronous machines) uses an electromagnet to create the field. A DC voltage is applied to the coils on the rotor, creating north and south poles. This particular rotor is called a salient-pole rotor because the rotor is not symmetric.