DC Machines & Synchronous Machines Notes VTU | DCMSM Notes VTU

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Here you can download the DC Machines & Synchronous Machines Notes VTU (DCMSM Notes VTU) of as per VTU Syllabus. Below we have list all the links as per the modules.

DC Machines & Synchronous Machines Notes VTU – DCMSM Notes VTU of Total Units

PART – A

UNIT – 1

DC GENERATOR-Review of basics of DC machines, classification of DC generator, types of armature winding, EMF equation, no-load characteristic, armature reaction, load characteristics.

UNIT – 2

DC Motors- (a) Classification, Back EMF and its significance, Torque equation, Characteristics of shunt, series & compound motors, speed control of shunt, series and compound motors. Application of motors.

UNIT – 3

LOSSES AND EFFICIENCY- Losses in DC machines, power flow diagram, efficiency, condition for maximum efficiency.

UNIT – 4

TESTING OF DC MACHINES- Direct & indirect methods of testing of DC machines-Brake test, Swinburn’s test, Hopkinson’s test, Retardation test, Field’s test, merits and demerits of tests.

PART – B

UNIT – 5

SYNCHRONOUS MACHINES- the Basic principle of operation, construction of salient & nonsalient pole synchronous machines, generated EMF, the effect of distribution and chording of winding, harmonics-causes, reduction, and elimination. Armature reaction.

UNIT – 6

VOLTAGE REGULATION: Voltage regulation by EMF, MMF, ZPF & ASA method. Short circuit ratio and its importance. Two reaction theory-direct and quadrature axis reactances, phasor diagram.

UNIT – 7

Synchronizing to infinite bus bars, parallel operation of alternators. Operating characteristics, power angle characteristics excluding armature resistance, the operation for fixed input and variable excitation.

UNIT – 8

SYNCHRONOUS MOTOR: Principle of operation, phasor diagrams, torque and torque angle, Blondal diagram, the effect of the change in load, the effect of the change in excitation, V and inverted V curves.