*Laboratoire de l’électrotechnique de Constantine LEC Article Info Article history:

Keyword: Direct power control space vector modulation switching table power quality converter control harmonics, power factor The aim of this paper is to compare two different control structures. The Simple Direct Power Control (DPC) and the Direct Power Control with Space Vector Modulation (DPC-SVM) for two level converter applications. The first strategy (DPC) has been developed to control the instantaneous active and reactive power directly by selecting the optimum switching state of the converter. Applied to the Pulse Width Modulation (PWM) converter its main feature is to improve the total power factor and efficiency, even harmonics compo-nents existence. In the second structure, the active and reactive powers are used as (PWM) control variables instead of the three-phase line currents usually used in other techniques. It is shown that DPC-SVM exhibits several properties; good dynamic response, constant switching frequency, and in particular it provides a sinusoidal line currents. Simulation and experimental results has shown that both control structures achieve good performances