The doubly-excited machine can be used as a variablespeed
generator or as a variable-speed-drive motor. In
this thesis the focus is on the aspects associated with
generating electric power (real and reactive) from erratic
energy resources such as water or wind. In such cases,
the power input to the prime...
An important task of a Variable Speed Generation (VSG)
system is the capability to maintain and control the terminal
voltage at some desired value as determined by the
reactive power dispatch strategy.The main objective is to
design a sub-optimal fixed-parameter controller in the
sense that constraints with respect to practical...
An EMCON-D distributed process controller is evaluated
for control and monitoring of an experimental doubly-fed
machine system. A closed-loop control circuit is
implemented to operate the doubly-fed machine with
constant rotor current. A standard PID algorithm as well
as an algorithm tailored to the doubly-fed machine are
evaluated.