This paper presents the design and construction of a proto-
type thyristor converter based on a Digital Signal Controller.
The converter control system is based on a digital signal
controller, in which are developed real time tasks such as
signal sampling, digital filtering, zero crossings detection and
calculation of control actions. A signal conditioning stage for
bidirectional communication between the DSC and converter
was implemented using digital potentiometers and current
sensors. Furthermore, stability and dynamic behavior of the
converter when operated in closed-loop were analyzed by
simulation and in the laboratory. A closed-loop digital control
was designed with a PI digital controller, which showed an
excellent performance during the step changes of reference
and disturbances. The implementation of digital controller
based on Digital Signal Controllers paves the way for the
development of intelligent thyristor-based power converters.