DC Motor, Generators and Energy Conversion Devices Lecture Notes
Advertisement
DC Motor, Generators and Energy Conversion Devices Lecture Notes
DC Motor, Generators and Energy Conversion Devices Lecture Notes
This note explains the following topics: Introductory Concepts, Magnetic Circuits-
Quantities and Definitions, Solving Magnetic Circuits, Solving Magnetic Circuits
with Electrical Analogies, Mechanics For Motors and Generators, Electromagnetic
Induction and Magnetic Forces, Construction of Elementary Dc Generators, Induced
Voltage In Practical Dc Machines, Power Balance And Efficiency in Dc Generators,
Separately Excited Dc Motors, Shunt Connected Dc Motors, Starting Dc Motors, Dc
Motor Control Components and Diagrams, Computing Resistive Starter Values, Other
Dc Motor Connections, Series Dc Motor Torque-Speed Characteristics, Non-Linear
Operation of Dc Motors, Non-Linear Operation of Compound Motors, Operation and
Control of Dc Motors, Self-Excited Dc Generators, Solar Energy and Photocells,
Photocell Electrical Characteristics and Circuit Model, Solar Panels and
Economics of Solar Power.
This note covers the following topics: Elementary
Direct-Current Machine, Windings in Relative Motion, Voltage and Torque
Equations, Basic Types of Direct-Current Machines,Separate Winding Excitation,
Shunt-Connected DC Machine, Series-Connected DC Machine, Compound-Connected DC
Machine, Actuators and Sensors in Mechatronics, Brushed DC Motors,Time-Domain
Block Diagrams, State Equations, andTransfer Functions ,Elementary Approach to
Permanent-Magnet, DC Motor Modeling, Control of DC Motors, Geared Systems,
Optimum Gear Ratios, and Motor, Motor Selection Considerations.
DC power systems are not very common in the contemporary
engineering practice. However, DC motors still have many practical applications,
such automobile, aircraft, and portable electronics, in speed control
applications. The topics in this lecture presentation are as follows : DC
motors, The simplest DC machine, Commutation in a simple 4-loop DC machine,
Problems with commutation in real DC machines, Solutions to the problems with
commutation, Power flow and losses in DC machines, The losses in DC machines,
The power-flow diagram, Equivalent circuit of a DC motor, Magnetization curve of
a DC machine, Motor types: Separately excited and Shunt DC motors, Shunt motor,
Motor types, Series motor, Cumulatively compounded motors: torque-speed
characteristic, Differentially compounded motors: torque-speed characteristic,
Compounded DC motor, DC motor starters.