How is motor pitch calculated?

How is motor pitch calculated?

Pole Pitch is equal to the total number of armature slots divided by the total number of poles in the machine. For example, if there are 96 slots on the armature periphery and 4 poles, the number of armature slots that come between two adjacent pole centers would be 96/4 = 24.

What is pole pitch in induction motor?

Pole pitch: The pole pitch is defined as the peripheral distance between centers of two adjacent poles in dc machine. This distance is measured in term of armature slots or armature conductor come between two adjacent pole centers.

What is stator pitch?

The winding pitch of a generator is the number of slots spanned by each coil in the stator winding divided by the number of slots per pole. For example, in a 4-pole generator with a 48-slot stator (12 slots per pole), if each coil in the stator winding spans 12 slots then the ratio is 1/1 and the winding is full pitch.

How is front pitch calculated?

Calculation of pitch values

1. Back pitch, Yb = 10 – 3 = 7.
2. Front pitch, Yf = 8 – 3 = 5.
3. winding pitch for lap winding, Y = Yb – Yf = 7 – 5 = 2.
4. winding pitch for wave winding, Y = Yb + Yf = 7 + 5 = 12.
5. Commutator pitch for lap winding, Y = Yb – Yf = 7 – 5 = 2.
6. For wave winding, Y = Yb + Yf = 7 + 5 = 12.

What is pitch in motors?

The distance between the two sides of an individual coil of an AC armature winding is termed the coil pitch. When the angular distance between the sides of a coil is exactly equal to the angular distance between the centers of adjacent field poles, the coil is termed to be a full pitch coil.

What is full pitched winding?

Definition of full-pitch winding : the winding of an armature in which the two sides of the armature coil span a distance equal to the pole pitch.

What is pole pitch?

Definition of pole pitch : the distance measured on the circumference of the armature from the center of one pole to the center of the next pole : 180 electrical degrees — compare coil, pitch sense 2b(5)

What is pitch in motor?

What is a full pitch?

A coil when placed in a slot, the distance between two coil sides of a coil is equal to the distance between the center of one pole to the center of an adjacent pole ( i.e., pole-pitch ) is known as ‘Full Pitch’.

What is pole in motor?

The pole count of a motor is the number of permanent magnetic poles, north and south, on the rotor. There is always the same number of north and south poles on the rotor. For example, in a 12 pole motor, there are 6 north poles and 6 south poles. This motor would also be considered a 6 pole-pair motor.

What is a pole pitch?

What is the difference between coil pitch and pole pitch?

A coil is said to be fully pitched when the coil span is made equal to the pole pitch of the machine. In other words, the distance between the two coil sides of a coil will be equal to the distance between the centers of two adjacent poles.

What is a 2 pole motor?

2 pole motor is a type of motor that has two magnetic poles or a pair of magnetic pole. Rotor of the 2 pole motor completes one cycle for every cycle of the source. A 2 pole motor shows a north-south configuration. 2 pole motor has high speed due to less number of poles.

What is pole pitch in DC power system?

The pole pitch is defined as peripheral distance between center of two adjacent poles in DC machine. This distance is measured in term of armature slots or armature conductor come between two adjacent pole centers.

What is the difference between 2 pole and 4 pole rotors?

Unlike 2-pole rotors, 4-pole rotors have a bolted pole tip and no retaining rings – which means mainte- nance of 4-pole rotors is fast and easy. The lower speed of 4-pole motors and generators, compared to 2-pole motors and generators, means that they are subject to less general wear and tear.

What is the speed of 2 pole induction motor on 50Hz?

If you are using 50Hz and have a two pole motor 60 x 50 / 1 = 3000 rpm. The induction motor will run at a slight less speed due to “slip” which is what gives the motor its torque. For example 5.5kW, 400v, 2 pole motor will run at approximately 2880 rpm.