Electric Motor Stator Winding

In an electric motor, the stator provides a magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.

What are the 3 different types of stator windings?

Three types of stator windings were considered in the analysis: concentric single layer winding, concentric double layer winding and fractional concentric winding.

How much winding does a stator have?

The stator is fitted with a three-phase winding.

What causes stator winding failure?

Stator winding failures are generally attributed to groundwall or turn insulation failures. The failure mechanism involves the gradual development of a weakness in the insulation.

What are the two types of stator windings?

There are two main methods for coil winding: concentrated and distributed winding. For concentrated winding, each coil is wound on its own pole face, whilst in distributed winding, each coil is spread over several pole faces.

What is 3-phase stator winding?

In its simplest form, the three-phase, random wound stator winding process consists of removing an existing winding from a stator and replacing it with a winding that duplicates the original winding performance characteristics.

Is a stator AC or DC?

The stator is the coil of wire housed inside the engine case. A magnet on a shaft spins within the stator, creating alternating current (AC). That current travels along fairly heavy gauge wire through the case and into the rectifier/regulator which converts it to DC power, and at a consistent output.

Why field winding is placed on stator?

Reasons for placing field winding on the rotor, not on the stator: Armature winding deals with the high levels of voltages, hence it is easier to insulate a stationary winding as compared to rotating winding. The stationary 3-phase armature can be directly connected to load without slip rings and brushes.

What is the purpose of the windings in the stator?

It has an additional stator winding, called compensating winding. This purpose is to improve power-factor and to provide better speed regulation. This winding is much smaller than the stator winding and is usually wound in the inner slots of each main pole.

How do you calculate stator windings?

You'd need to be able to get from cross-sectional area to diameter, and also to figure out how many conductors are necessary to create a single turn in the winding. The equation to get from diameter (in units) to cross-sectional area (in same units^2) is: (diameter) = 2 * [ ( area ) / 3.14159 ]^0.5.

How many ohms should a stator put out?

How Many Ohms Should A Stator Have? A good stator is expected to have between 0.2 to 0.5 ohms.

How many volts should come out of a stator?

Tests on the alternator/stator coil with the engine on: You now can test the voltage between the terminals of the stator coil at 3,000 rpm. Depending on your motorcycle, you should get a reading of anywhere between 20 and 50 volts.

What are the main types of stator winding faults?

Different types of stator winding faults are (i) short circuit between two turns of same phase—called turn-to-turn fault, (ii) short circuit between two coils of same phase—called coil to coil fault, (iii) short circuit between turns of two phases—called phase to phase fault, (iv) short circuit between turns of all

How do you clean stator windings?

Re: Cleaning Stator Winding Remove stator and clean coil properly with smooth fine(soft) brush using Tina spirit or fuel in light application for quick dry than water. After cleaning or brushing off oil stains,deposits and or dirts,allow to dry up as it usually dry up fast(evaporation).

How do you know if motor winding is good or bad?

Start by completely disconnecting the spindle motor from all power sources. Check each wire, including T1, T2, T3 and the ground wire. If the reading is infinite, your motor should be fine. If you get a zero reading or any continuity reading, you have either a motor problem or a cable problem.

Why stator winding is mostly Delta Connection?

Starting torque should be large, as motors are of small capacity and hence Stator should be connected in Delta to have more current and hence more starting torque.

What is rotor and stator winding?

The rotor is the rotating part of a machine. In electrical motors or generators, the whole linear synchronously rotating part of the machine is termed the rotor. The stator is the non-moving, fixed counterpart in a machine.

What is the purpose of stator windings and rotor windings?

The rotor is placed inside the core of the stator. The three-phase is supplied to the stator winding which produces the rotating magnetic field. The rotor rotates inside the rotating magnetic field. Thus, an emf is induced because of the interaction of magnetic field of rotor and stator.

How does a 3-phase stator work?

This will force the rotor to rotate inside the induction motor we have three separated coils which

How much winding does a 3-phase motor need?

The most basic 3-phase induction motor has three sets of windings, with each phase connected to a differ- ent set of windings, Figure 16-4. The current in each winding is 120 electrical degrees out of phase with the urrent in the other windings.