Posted inDesign of electrical machines
Overall dimensions – Design of Transformers
The main dimensions of the transformer are (i) Height of window(Hw) (ii) Width of the…
Posted inDesign of electrical machines
Window space factor Kw
Window space factor is defined as the ratio of copper area in the window to…
Posted inDesign of electrical machines
Output Equations and Main Dimensions- Design of Transformers
Single phase core type transformer, Three phase core type transformer : Unless otherwise specified, LV…
Posted inDesign of electrical machines
Design features of power and distribution type transformers
 Power transformer  1.         Load on the transformer will be at or near the full load through…
Posted inDesign of electrical machines
Design of commutator and brushes
 The Commutator is an assembly of Commutator segments or bars tapered in section. The segments…
Posted inDesign of electrical machines
Design of Armature
 The armature winding can broadly be classified as concentrated and distributed winding.  In case of…
Posted inDesign of electrical machines
Selection of number of poles
 As the armature current increases, cross sectional area of the conductor and hence the eddy…
Posted inDesign of electrical machines
Real & Apparent flux densities
 Although a detailed description of the design of a DC machine is beyond the scope…
Posted inDesign of electrical machines
Carter’s Coefficient
 Carter’s gap expansion coefficient Where Kgs is called the Carter’s gap expansion coefficient for slots…
Posted inDesign of electrical machines
Magnetic Circuit Calculations:
Normally magnetic circuit calculations involve two types of problems. In the first type of problem it is…