Recent Control Strategies for Induction Motor Drive Assignment 2022

RECENT CONTROL STRATEGIES FOR INDUCTION MOTOR DRIVE
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Purposes of using transformers in electrical systems
Transformers also known as voltage transformers are gadgets that are used in electrical circuits
in changing electricity voltage that flows in a circuit. Transformers may either be used in
increasing or decreasing the voltage also known stepping up or stepping down voltage.
Energy tends to get lost during transmission of electricity over long distances for instance during
the move from a power plant to the final consumption. Less energy gets lost in case voltage is
high hence electrical utilities utilize high voltage in transmission over long distance wires. The
voltage is however quite dangerous for use in homes. Electrical utilities adopt transformers in
changing the voltage of electricity as it moves from the power plant to final destination
consumption. The voltage coming from power plant is then stepped with use of transformers to
required levels for transmission over long distance. At a later stage, voltage undergoes stepping
down prior to its entry to the final consumption point, still using transformers.
For proper functioning of electrical power distribution network, there has to be stepping up of
voltages prior to transmission of power over longer distances over power lines. One great
challenge is that there is loss of power between the consumers and power plants since some of
power are used by current in heating transmission lines. The power that is transmitted along line
is equivalent to the voltage multiplied by current. When the voltage is higher current has to be
lower within transmission lines to generate same amount of power. Lower currents generate
relatively less heating as well as less loss of power. The high voltages of course have to be
stepped back down prior to supply of power to the final consumption points. Transformers thus
tend to be of utmost importance in stepping and stepping down voltages at every end of line.

Types of transformers
Based on usage
These are grouped as power, protection as well as distribution transformers alongside measuring
transformers.
Power transformers are enormous in size and are suitable for power transfer applications that
transfer at high voltages. It is often used in generation stations of power as well as transmission
power stations. It comes along with high levels of insulation.
Distributing Transformer: These transformers are used in the distribution of power produced
from the power production plant to the remote regions. It is basically used in the distribution of
electrical energy at relatively lower voltages that are less than 33kV in the industrial application
and 440V-220V for domestic uses (Zhang, Yang & Xia, 2016). The major features include:
 Working at efficiencies in the range of 50 to 70%
 Easy to install
 Have low magnetic losses
 Small in size
 Not often fully loaded
Measurement transformer: Adopted in measuring the quality of electricity for instance current,
power voltage among others. These are grouped as current transformers, potential transformers
among others.
Protection transformers: These are adopted in component protection purpose. The main
difference between protection transformers and measuring transformers is level of accuracy