Configuration of DC Chopper
The configuration of chopper is done according to
direction of output voltage and output current.
Configuration of DC Chopper (Types of DC Chopper)
There are following types of DC chopper according to output voltage and output current with respect to standard input DC voltage. The configuration of chopper is done according to direction of output voltage and output current.
The
output voltage and current both
are positive in the Type A chopper. It works in the first quadrant. The
Type A chopper works as forward drive.
The
output voltage is
positive but output current negative in the Type B chopper. The power flow
from load to supply side. It works in second quadrant. This Type of chopper is
used in the regenerative braking of DC
Motor.
The
load current is either positive or negative but load voltage remains positive
in the Type
C chopper. This type of chopper works in first and second
quadrant. The Type C chopper is combination of both Type
A and Type
B chopper.
The
load voltage is
either positive or negative but load current always
positive in the Type D chopper. This chopper works in first as well as
fourth quadrant.
The
load voltage and load current are either positive or negative in the Type E
chopper. This type of chopper works in all quadrants. It is a combination
of two Type C quadrants.
Forward Drive
If the chopper works in first
quadrant, it is called as forward drive because the output voltage and current
both are positive in this quadrant.
Reverse Drive
If
the chopper works in third quadrant, it is called as reverse drive because the
output voltage and current both
are negative in this quadrant. The DC
motor works as DC
generator in the second and fourth quadrant because the power flows
from load to supply side in this quadrant.
Configuration of DC Chopper Diagram
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