Why silicon steel is used in stator?

Silicon steel is used in many electrical applications where electromagnetic fields are important, such as electrical stators/rotors and motors, coils, magnetic coils and transformers. Thus, silicon steel improves the efficiency and effectiveness of any device using steel as a magnetic core material.

Why is a stator core made of steel?

According to the laws of electromagnetism, a perpendicular magnetic field is created as a current flows through a conductor. If our stator core were made from one solid piece of steel, these currents (known as circulating currents or eddy currents) and the associated heat generated would be huge.

Why is silicon steel used in motors?

Silicon steels are ferritic alloys of iron and silicon that have magnetic properties which make them useful in motors and transformers. The silicon additions improve magnetic softness and increase the electrical resistivity.

What metal is a stator made of?

The stator frame consists of laminations of silicon steel, usually with a thickness of about 0.5 millimetre. Lamination is necessary since a voltage is induced along the axial length of the steel as well as in the stator conductors.

What is high silicon steel?

Silicon steel is a soft magnetic material that is used in electrical power transformers, motors and generators. It has a high silicon content of about 3.2 mass \%, which increases the electrical resistivity of iron and, therefore, reduces eddy current losses.

Why the stator and rotor of the synchronous machine is made by silicon steel?

The stator core is made of silicon steel material. It is made from a number of stamps that are insulated from each other. Its function is to provide an easy path for the magnetic lines of force and accommodate the stator winding.

How is stator made?

The stator core is built up of thin punched laminations of electrical grade steel, which are commonly called “punchings.” They are segmented, meaning that 12 to 24 punchings are laid side-by-side to form a complete 360° ring, comprising one layer.

Which component is usually fabricated out of silicon steel?

Which of the following component is usually fabricated out of silicon steel? Explanation: The stator core is made of silicon because it possesses high magnetic permeability and low magnetic hysteresis. Adding silicon to steel increase its resistivity and strength and it is easier to magnetize silicon added steel.

What is the composition of steel and silicon steel?

C) Steel 93\% and Silicon 7\%.

What is the composition of silicon steel?

Silicon steel is a mixture of iron with a silicon content of up to 3.2\%. The silicon addition improves the magnetization of the steel and its electrical resistivity (the opposite would be electrical conductivity). Adding silicon increases irons’ electrical resistivity up to 5 times.

What would happen if the stator core were made of solid steel?

Conversely, as the magnetic field of our energized rotor passes through our stator core, it creates a perpendicular flow of current through the stator. If our stator core were made from one solid piece of steel, these currents (known as circulating currents or eddy currents) and the associated heat generated would be huge.

What is a stator core lamination?

Stator core laminations have a very specific profile and the dimensions have exacting tolerances. Currently, laminations are manufactured by Punching/stamping dies, or Computer-controlled laser cutting machines. A stator core is built up as laminations are placed side-by-side in order to make a complete circular or ringed layer.

What is a stator frame?

The stator frame supports the stator and the end brackets. It must be strong and accurately machined to that the stator is concentric with the rotor. It can be made of cast aluminum, cast iron or fabricated steel plates.

How does a magnetic field flow through a stator?

According to the laws of electromagnetism, a perpendicular magnetic field is created as a current flows through a conductor. Conversely, as the magnetic field of our energized rotor passes through our stator core, it creates a perpendicular flow of current through the stator.