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How would the inductance of the field winding affect the motor operation under steady state?
If the motor is in a steady state then the inductance should not make a difference other than it’s normal operation. The EM field generated by the field coil is necessary as to it’s operation. Since the motor is in a steady state any mutual inductance would either be desirable or just wouldn’t make any difference.
How does armature windings affect the system?
The armature reaction changes the distribution of the magnetic field, which affects the operation of the machine. The effects of the armature flux can be offset by adding a compensating winding to the main poles, or in some machines adding intermediate magnetic poles, connected in the armature circuit.
What is armature inductance?
Armature inductance — Armature inductance Inductance of the conducting portion of the motor. If you do not have information about this inductance, set the value of this parameter to a small, nonzero number.
What are the properties that determine the inductance of a coil?
Inductors or coils are very common in electrical circuits and there are many factors which determine the inductance of a coil such as the shape of the coil, the number of turns of the insulated wire, the number of layers of wire, the spacing between the turns, the permeability of the core material, the size or cross- …
What is armature reaction and its effect?
Definition: The armature reaction simply shows the effect of armature field on the main field. In other words, the armature reaction represents the impact of the armature flux on the main field flux. The armature reaction distorted the main field flux. It reduces the magnitude of the main field flux.
What are the main effects of armature reaction?
The adverse effects of armature reaction: Armature reaction weakens the main flux. In case of a dc generator, weakening of the main flux reduces the generated voltage. Armature reaction distorts the main flux, hence the position of M.N.A. gets shifted (M.N.A. is perpendicular to the flux lines of main field flux).
How does an armature winding work in a generator?
When operating as a generator, the armature winding is rotated through the field, generating a DC voltage that is delivered to the load. For motor operation, the armature winding draws current from the source, and the current in the armature coils interacts with the field to create an electromagnetic torque that drives a mechanical load.
Why does armature current increase when load on the DC motor increase?
The generator voltage opposes the driving voltage. With a lower overall voltage across motor’s internal resistance as the motor turns faster, the current flowing into the motor decreases. The faster the motor spins the less current it draws. Why does armature current increase when load on the DC motor increase?
Why is the armature inductance important to motor operation?
The smoothing effect of the armature inductance is important in achieving successful motor operation: the armature acts as a low-pass filter, blocking most of the ripple, and leading to a more or less constant armature current.
How does armature reaction affect separately excited generator?
Effect of armature reaction on separately excited generator terminal voltage. As the load current increases armature reaction may lower the flux per pole causing an additional reduction in the terminal voltage. The terminal voltage of a separately excited DC generator will actually decline nonlinearly when the armature current is increased. 18