What is leakage flux in a magnetic circuit?
Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. Most of the flux is set up in the core of the solenoid and passes through the particular path that is through the air gap and is utilised in the magnetic circuit.
What is leakage flux and leakage coefficient in magnetic circuit?
The ratio of the total flux produced to the useful flux set up in the air gap of the magnetic circuit is called leakage coefficient or leakage factor. It is denoted by (λ). λ = ϕ a ϕ g.
What is leakage flux and how do you represent in equivalent circuit?
The flux Ф1 would induce emf in primary given by. (1) and (2) show that induced emf is proportional to the rate of change of current and leads current by 900. But these are the properties of an inductor. Hence, leakage flux is represented by an inductive reactance in transformer equivalent circuit.
What causes flux leakage?
The principle of flux leakage is used to detect casing corrosion, since flux leakage is caused by rapid changes in the thickness of the casing and by pits and holes in either the internal or external wall. Flux leakage distorts the magnetic-flux lines and induces a signal into an electric coil moving past it.
What is meant by magnetic leakage?
Magnetic Leakage. The lines of force in a field magnet which pass through the air and not through the armature are useless and represent a waste of field. Such lines constitute magnetic leakage.
What is magnetic leakage and magnetic fringing explain?
Magnetic Leakage and Fringing – Figure 10.28 shows a magnetized iron ring with a narrow air gap, and the flux which crosses the gap can be regarded as useful flux. 10.28 and is known as leakage flux. The flux while crossing the air gap bulges outwards due to variation in reluctance. This is known as fringing.
What is the function of the leakage flux *?
What is the function of the leakage flux? Explanation: The leakage flux produced due to the low reluctance path does not transfer the energy produced. The leakage flux also does not convert the energy in the system.
What is slot leakage flux?
SLOT LEAKAGE • Leakage flux associated with stator and rotor conductors flowing across the slots having path from tooth to tooth. • Flux path is perpendicular to path of the main flux • Leakage depends on the shape of the slot 6Kongunadu College of Engineering & Technology LEAKAGE FLUX IN ROTATING MACHINE.
What is the effect of leakage flux?
The effect of leakage flux in a transformer is to: Cause voltage drop in winding. Increase copper losses. Decrease copper losses.
What is the magnetic flux linkage?
Flux linkage is the linking of the magnetic field with the conductors of a coil when the magnetic field passes through the loops of the coil, expressed as a value. The flux linkage of a coil is simply an alternative term for total flux, used for convenience in engineering applications.
What is leakage flux in induction motor?
The Leakage flux in an Induction motor is basically due to the air gap between the stator and rotor which leaks out through the machine which is also said to be unuseful flux. The presence of an air gap between the stator and rotor of an induction motor increases the reluctance of the magnetic circuit.
What do you mean by leakage flux?
Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. Taking an example of solenoid you can explain the leakage flux and the fringing both.
What does magnetic leakage mean?
Magnetic leakage can be defined as the passage of magnetic flux outside the path along which it can do useful work . The passage of useful and leakage magnetic fluxes is diagramed in Figure 1.
What is leakage flux and fringing?
Leakage flux: Some flux while passing through the magnetic circuit, leaks through the air surrounding the core. This flux is called as leakage flux. Useful flux: The flux in the air gap which is actually utilized for various purposes depending upon the application is called as useful flux. Fringing: When the magnetic flux passing or crossing an air gap then it tends to bulge outwards the iron ring, this effect is called as “Fringing”.
What is armature leakage flux?
When armature carries a current, it produces its own flux . Some part of this flux completes its path through the air around the conductors itself. Such a flux is called leakage flux. This is shown in the Fig. 1. Note : This leakage flux makes the armature winding inductive in nature.