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Section 1 - Introduction
Course Introduction
DC Machines_ Course Feedback
Section 2 - DC Generator
Principle of DC Generator
Components required to produce voltage
Generating an AC Voltage
Converting AC into DC
Improving the wave shape
Induced Voltage / EMF Equation
Neutral Zone / Magnetic Neutral Axis
Armature Reaction
Effects of Armature Reaction
Brush Shift
Interpoles or Commutating poles
Commutation (Ideal Commutation)
Practical Commutation
Methods to Improve Commutation
Equivalent circuit of DC Generator
Types of DC Generator
Separately Excited DC generator & it’s characteristics
Self Excited DC generator & it’s characteristics
Compound generator & it’s characteristics
Construction of DC Generator
Practical construction of DC generator
Specifications of Generator
Section 3 - DC Motor
Principle of DC motor
Construction of DC motor
Diagram : DC Machine construction
Back EMF or Counter EMF
Acceleration of DC Motor
Solving a Numerical
Mechanical power & torque of DC motor
Equivalent circuit of DC motor
Diagram : Equivalent ckt
Speed of DC Motor
Armature speed control
Diagram : Armature speed control
Rheostat speed control
Diagram : Rheostat Speed control
Field speed control
Diagram : Field speed control
Summary of Speed control methods
Types of DC Motor
Shunt motor and it’s characteristics & application
Diagram : Shunt Motor
Series motor and it’s characteristics & application
Diagram : Series Motor
Compound motor and it’s characteristics & application
Diagram : Compound Motor
Diagram : Characteristics of DC Motor
Speed Regulation of DC Motor
Summary of Types of DC Motor
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Starting of DC Motor | Why do we need starter?
Three Point Starter
Diagram : Three point Starter
Four Point Starter
Diagram : Four Point Starter
Stopping of DC Motor
Dynamic Breaking
Diagram : Dynamic breaking
Plugging or Reverse Current Breaking
Diagram : Plugging
Losses in DC Machines
Power Stages in DC Machines (Power Flow)
Congrats on Completing the course!