DC Machines and Transformers Lecture Notes
This note explains the following topics: Electromechanical Energy Conversion, Forces and torque in magnetic systems, DC Generators, types of DC generators, voltage buildup, critical field resistance and critical speed, DC Motors And Testing, Single Phase Transformers, Three Phase Transformers.
Author(s): Dr. P Sridhar and P Mabu Hussain
138 Pages 
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.
Author(s): Dr. Gleb V. Tcheslavski
53 Pages
DC Machines and Transformers Lecture Notes
This note explains the following topics: Electromechanical Energy Conversion, Forces and torque in magnetic systems, DC Generators, types of DC generators, voltage buildup, critical field resistance and critical speed, DC Motors And Testing, Single Phase Transformers, Three Phase Transformers.
Author(s): Dr. P Sridhar and P Mabu Hussain
138 Pages
