What is a wave winding?
Definition of wave winding : an armature winding in which the coils are laid in two layers and follow each other on the surface of the armature in the form of waves with the coils being so connected in series that there are only two paths for the flow of current whatever the number of poles in the machine.
What are the uses of lap and wave windings?
The lap winding is used in low voltage, high current machines, whereas the wave winding is used in high voltage, low current machines.
What is wave winding in DC motor?
A wave winding (also known as a series winding) is a type of armature winding. Along with a lap winding, wave windings form one of the two types of armature windings in DC machines. In a wave winding, we connect the end of one coil to the start of another coil of the same polarity.
What is lap winding machine?
Lap Winding is a form of two-layer winding for electric machines in which each coil is connected in series with the one adjacent to it. lap winding is used for high current and low voltage machines.
What is the difference between lap and wave winding?
The main difference between these two is, in the lap winding, One of the major difference between them is that in a lap winding, the last part of every coil is associated with the nearby sector while in the wave winding the last part of armature coil is associated with the commutator sector at a distance apart.
Why lap winding is used in dc machines?
In wave winding, the number of parallel paths is two….4.6.
| Lap Winding | Wave Winding |
|---|---|
| The efficiency of the lap winding is less | The efficiency of the wave winding is high. |
| The lap winding is used for high current, low voltage machines | The applications of wave winding include low current and high voltage machines. |
What are the advantages of lap winding?
The advantages of lap windings include: This winding is necessarily required for large current applications because it has more parallel paths. It is suitable for low voltage and high current generators.
What is wave and lap winding?
The lap winding can be defined as a coil which can be lap back toward the succeeding coil. The wave winding can be defined as the loop of the winding can form the signal shape. The connection of the wave winding is, the armature coil end is connected to commutator sections at some distance apart.
What is the difference between simplex and duplex lap winding?
A winding in which the number of parallel path between the brushes is equal to the number of poles is called simplex lap winding. A winding in which the number of parallel path between the brushes is twice the number of poles is called duplex lap winding.
What is the advantage of lap winding over wave winding?
What is lap winding formula?
The back pitch and front pitch must be odd. Resultant pitch (YR) = YB – YF = 2m. YR is even because it is the difference between two odd numbers. Commutator pitch (YC) = ±m. Number of parallel path in the Lap winding = mP.
What factor determines the difference between lap and wave winding?
The wave winding requires the dummy coil for giving the mechanical balance to the armature. In lap winding, the number of brushes is equal to the number of parallel paths whereas in wave winding the number of brushes is two. The efficiency of the lap winding is less as compared to the wave winding.
What is the difference between lap winding and wave winding?
The armature winding is mainly classified into two types, i.e., the lap winding and the wave winding. One of the major difference between them is that in a lap winding the end of each coil are connected to the adjacent segment whereas in the wave winding the end of armature coil connected to commutator segment at a distance apart.
What is duplex lap winding?
Duplex Lap Winding – In duplex lap winding the number of parallel paths is twice to the number of poles. The one end of the coil is connected to the starting end of the other coil which has the same polarity as that of the first coil. The coils are connected in the wave shape and hence it is called the wave winding.
How are conductors joined in lap winding?
In lap winding, the conductors are joined in such a way that their parallel paths and poles are equal in number. The end of each armature coil is connected to the adjacent segment on the commutator.
What is the commutator pitch for lap winding and wave winding?
The commutator pitch for lap winding is always 1. The commutator pitch for wave winding is almost equal to 2 pole pitch i.e. 360 electrical degree. Wave winding is more advantageous over lap winding. It is more costly due to requirement of equalizer ring and more carbon brushes.