Electrical Machines

Running head: ELECTRICAL MACHINES
ELECTRICAL MACHINES
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Table of Contents
Introduction:-...................................................................................................................................2
Discussion:-.....................................................................................................................................2
Single phase rectifier:-.................................................................................................................2
DC drives:-...............................................................................................................................3
Single Phase controller of DC Motor:-....................................................................................4
Armature Control:-....................................................................................................................10
Conclusion:-...................................................................................................................................12
References:-...................................................................................................................................13

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Introduction:-
DC servo motor is the one types of motor which is controlled by the power system. DC
servo motor is mainly identify the structure which can be realized by the system controller
design. There are different types of servo motor are there like magnet motor, brush less motor,
separate excited motor. DC servo motors are controlling the field current which is recognized by
the armature current (Natarajan 2016). DC servo motors are mainly depends on the different
types of applications and this types of applications are saturated by the magnetic power and
armature current. When the DC servo motors are powered by the electric sources then the field
controller are saturated. The range of the current source is constant and armature voltage are
shifted by the change of torque. Single phase rectifier are mainly depended on the two types of
energy flows one is positive and another is negative. In a speed generator there are important to
present the perfect approaches of the high controller generator and deliver the full torques of full
wave rectifier. The armature current are produces for high gain resistance and ripple factor which
is important for the harmonic shifting.
Discussion:-
Single phase rectifier:-
In a single phase rectifier is the one types of current flow which is limited to the one
single direction. The Alternative waveforms can passes through the diode which can efficient to
the different voltage source and average load. Two single wave rectifier contains to the diode
process and analog semi sequence voltage converter.

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Hence by using the Zero Crossing Recognition technique, the pulse applied to SCR is
derivative from the input AC voltage.
Speed control method N = Eb / φ1.
Where, Φ = Poles lines,
N = rotational speed of Armeture in rpm.
There are three different aspects like rheostat fluctuations, flux control fluctuation and voltage
control fluctuation. Rheostat fluctuations are fluctuating by the resistance of controller.
DC drives:-
DC drives is the basic speed control system which is supplies by the motor voltage and
regulate the speed of motor. DC drives are mainly used for the optimizing the high electricity
voltage and speed of the current. The DC drives are mainly categorized by the electrical grids
which is mainly connected to the three phase voltage. DC drives are mainly using the electricity
measurements and voltage regulator of supply currents (Nian, Peng and Zhang 2014). The motor
grid creates the magnetic power sources which is automatically controlled by the Ac rectifier