Electrical and Computer Engineering ETDs

Publication Date



This problem is concerned with the transient analysis of a DC machine with constant field excitation. By using the generalized circuit concept and Thevenin's Theorem applied to this concept, the transient behavior of this type of machine can be found from an analysis of a lumped circuit model of the machine. The lumped circuit model is a three port device and as such, the terminal equations describing the relationship between the difference and flow signals at the various ports are nonlinear. The nonlinear terms due to the products of signals in the terminal equations can be eliminated by requiring that the signals at any one port be held constant. In this problem the flow signal (field current) at the field port is held constant. With this restriction the DC machine is termed an electromechanical transducer.

Document Type




Degree Name

Electrical Engineering

Level of Degree


Department Name

Electrical and Computer Engineering

First Committee Member (Chair)

Donald Childress Thorn

Second Committee Member

Arnold Herman Koschmann

Third Committee Member

James Vernon Lewis