'Institute of Electrical and Electronics Engineers (IEEE)'
Abstract
Direct Power Control (DPC) technique has been
widely used as control strategy for three-phase power rectifiers
due to its simplicity and good performance. The DPC uses the
instantaneous active and reactive power to control the power
converter, the controller design has been proposed as a direct
control with a look up table (LUT), and in recent works, as an
indirect control with an inner control loop with proportional plus
integral controllers for the instantaneous active and reactive
power errors. In this paper a model-based DPC for three-phase
power converters is designed, obtaining expressions for the input
control signal which allow to design an adaptive control law
minimizing the errors introduced by the parameters uncertainties
as the smoothing inductor value or the grid frequency. Controller
design process, stability study of the system and experimental
results for a synchronous three-phase power rectifier prototype
are presented to validate the proposed controller
