This thesis describes an investigation into the design
of an optimal control system for an A.C. -D. C. Power Transmission
The steady-state operation of the plant is considered first,
and the relationships between some important parameters in the
system are established. The dynamic performance of the system is
then considered, and an optimal controller for the system is
designed using Pontryagin's Principle.
Several computer programs were written to analyse and confirm
the mathematical models developed in the thesis and good agreement
was obtained between the computed values and the results obtained
from the literature, over a range of operating and transient
A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.