- Electrical Machines Tutorial
- Electrical Machines - Home
- Basic Concepts
- Electromechanical Energy Conversion
- Energy Stored in a Magnetic Field
- Singly-Excited and Doubly Excited Systems
- Rotating Electrical Machines
- Faraday’s Laws of Electromagnetic Induction
- Concept of Induced EMF
- Fleming’s Left Hand and Right Hand Rules
- Transformers
- Electrical Transformer
- Construction of Transformer
- EMF Equation of Transformer
- Turns Ratio and Voltage Transformation Ratio
- Ideal and Practical Transformers
- Transformer on DC
- Losses in a Transformer
- Efficiency of Transformer
- Three-Phase Transformer
- Types of Transformers
- DC Machines
- Construction of DC Machines
- Types of DC Machines
- Working Principle of DC Generator
- EMF Equation of DC Generator
- Types of DC Generators
- Working Principle of DC Motor
- Back EMF in DC Motor
- Types of DC Motors
- Losses in DC Machines
- Applications of DC Machines
- Induction Motors
- Introduction to Induction Motor
- Single-Phase Induction Motor
- Three-Phase Induction Motor
- Construction of Three-Phase Induction Motor
- Three-Phase Induction Motor on Load
- Characteristics of 3-Phase Induction Motor
- Speed Regulation and Speed Control
- Methods of Starting 3-Phase Induction Motors
- Synchronous Machines
- Introduction to 3-Phase Synchronous Machines
- Construction of Synchronous Machine
- Working of 3-Phase Alternator
- Armature Reaction in Synchronous Machines
- Output Power of 3-Phase Alternator
- Losses and Efficiency of 3-Phase Alternator
- Working of 3-Phase Synchronous Motor
- Equivalent Circuit and Power Factor of Synchronous Motor
- Power Developed by Synchronous Motor
- Electrical Machines Resources
- Electrical Machines - Quick Guide
- Electrical Machines - Resources
- Electrical Machines - Discussion
Applications of DC Machines
At present, a large amount of electrical energy is generated in the form of alternating current. Consequently, the use of DC machines (motors or generators) has become limited. However, dc machines are still used in several applications like for supplying excitation systems of alternators, in electrolytic processes, welding processes, etc.
Applications of DC Generators
The applications of different kinds of DC generators are listed below −
Separately-Excited DC Generator
Generators are mainly used in laboratories for experiments and testing purposes.
They are also used as a source of DC power for supplying DC motors.
Series DC Generator
Series DC generators are used in DC locomotives for regenerative braking for supplying field excitation current.
Series DC generators are also used as a booster in distribution systems.
Differentially compounded series generators are used for arc welding.
Over compounded cumulative series generators are used for lighting and heavy power supplies.
Flat compounded series generators are used for supplying power to offices, houses, and the other commercial buildings.
Shunt DC Generator
Shunt DC generators are mainly used for lighting purposes.
Shunt DC generators are used for charging batteries.
These generators are also used for supplying field excitation current to alternators.
Applications of DC Motors
The applications of different types of DC motors are given below −
Series DC Motor
Series DC motors are used in applications where high starting torque is required.
Series DC motors are used in cranes and hoists.
Series DC motors are used in electric tractions.
They are used in air compressors.
They are also used in vacuum cleaners.
Series DC motors are also used in sewing machines, etc.
Shunt DC Motor
Shunt DC motors are used in applications that require constant speed.
Shunt DC motors are used for driving lathe machines.
These are also used in centrifugal pumps and blowers.
These are used in fans, conveyors, and spinning machines.
These DC motors are also used in lifts.
Compound DC Motor
Compound DC motors are used in those applications which require high starting torque and constant speed.
Used in printing presses.
They are also used in shears.
They are used in elevators and lifts.
Compound DC motors are also used in rolling mills and heavy planners, etc.