Commutation in DC Machine or Generator or Motor: One coil each under an adjoining pole-pair is connected between adjacent commutator segments in a lap-wound dc armature, while in a wave-wound armature the only difference is…

Compensating Winding in DC Machine: Compensating Winding in DC Machine - It was seen from earlier section, that armature reaction causes the flux density wave to be so badly distorted that when a coil is…

Armature Reaction in DC Machine: When the armature of a dc machine carries current, the distributed armature winding produces its own mmf (distributed) known as armature reaction in DC Machine. The machine air-gap is now…

Circuit Model of DC Machine: The parallel paths of DC machine armature are symmetrical and each has an induced emf Ea and a resistance Rp. The armature can be represented by the Circuit Model of…

EMF and Torque Equation of DC Machine: EMF and Torque Equation of DC Machine - It was shown in Sec. 5.2 (Fig. 5.14 (a)) that in a dc machine the magnetic structure is such that…

Introduction of DC Motor: Introduction of DC Motor is constructed in many forms and for a variety of purposes, from the 3-mm stepper drawing a few μA at 1.5 V in a quartz crystal watch…