In this slide give the information about Application of different types of dc generator and dc motor

1. Name :- Smit Shah -140410109096
Rehan shaikh-140410109097
S.Y electrical 2
Sem 3
Subject:-DCMT
Topic :-Application of different types of
dc generator and dc motor…..

2. Applications of DC Generators
There are various types of DC
generators available for several
types of services. The applications
of these dc generators based on
their characteristic are discussed
below:

3. Applications of Separately Excited
DC Generators
 These types of DC generators are
generally more expensive than self-
excited DC generators because of their
requirement of separate excitation
source. Because of that their
applications are restricted. They are
generally used where the use of self-
excited generators are unsatisfactory.

4.  I. Because of their ability of giving wide range
of voltage output, they are generally used for
testing purpose in the laboratories.
 II. Separately excited generators operate in a
stable condition with any variation in field
excitation. Because of this property they are
used as supply source of DC motors, whose
speeds are to be controlled for various
applications. Example- Ward Leonard Systems
of speed control.

5. Applications of Shunt Wound DC
Generators
 The application of shunt generators are very much
restricted for its dropping voltage characteristic. They
are used to supply power to the apparatus situated
very close to its position. These type of DC generators
generally give constant terminal voltage for small
distance operation with the help of field regulators
from no load to full load.
 I. They are used for general lighting.
 II. They are used to charge battery because they can be
made to give constant output voltage.
 III. They are used for giving the excitation to the
alternators.
 IV. They are also used for small power supply.

6. Applications of Series Wound DC
Generators
 These types of generators are restricted for the use of
power supply because of their increasing terminal voltage
characteristic with the increase in load current from no
load to full load. For this property they can be used as
constant current source and employed for various
applications.
 I. They are used for supplying field excitation current in DC
locomotives for regenerative breaking.
 II. This types of generators are used as boosters to
compensate the voltage drop in the feeder in various types
of distribution systems such as railway service.
 III. In series arc lightening this type of generators are
mainly used.

7. Applications of Compound Wound
DC Generators
 Among various types of DC generators, the compound wound DC
generators are most widely used because of its compensating
property. We can get desired terminal voltage by compensating
the drop due to armature reaction and ohmic drop in the in the
line. Such generators have various applications.
 I. Cumulative compound wound generators are generally used
lighting, power supply purpose and for heavy power services
because of their constant voltage property. They are mainly made
over compounded.
 II. Cumulative compound wound generators are also used for
driving a motor.
 III. For small distance operation, such as power supply for hotels,
offices, homes and lodges, the flat compounded generators are
generally used.
 IV. The differential compound wound generators, because of their
large demagnetization armature reaction, are used

8.  for arc welding where huge voltage drop and
constant current is required.
 At present time the applications of DC generators
become very limited because of technical and
economic reasons. Now a days the electric power
is mainly generated in the form of alternating
current with the help of various power electronics
devices.

9. Different Types Of DC Motors With
Their Applications:
 Type 1: DC Shunt Motor:
Applications Of DC Shunt Motor:
Reciprocating pump
Centrifugal pump
Machine Tools
Blower and Fan
Lathe
Constant speed line shaft, etc...

10. Type 2: DC Series Motor:
Applications Of DC Series
Motor:
Electric Traction
Trolley Car
Crane, Hoist
Conveyor, etc...

11.  Type 3: DC Cumulative Compound
Motor:
Applications Of DC Cumulative
Compound Motor:
Elevator, Conveyor
Heavy Planer
Rolling Machine
Air Compressor
Shearing and Punching Machine
Intermittent High Torque Load, etc...

12. Type 4: DC Differential Compound
Motor:
Applications Of DC Differential
Compound Motor:
Light Load
For Constant Speed Drive, e.g. Paper
Mill Drive, etc...