Hakim Denoun

This work presents a new three-phase PWM rectifier control technique, the latter is based on the direct control of instantaneous power using Super-Twisting Sliding mode control (STSMC-DPC). The results obtained are very relevant for the control of the PWM rectifier without sensor, namely a decoupled control of the power, unit power factor and a low THD of the currents is ensured.

This paper presents a comparative evaluation study about the application of four control methods to a Parallel multilevel DC-DC converter, for purpose to achieve better currents and voltage regulation. Proportional-integral, Fractional Proportional-integral, Fuzzy logic and sliding mode controllers are applied. Fast dynamic response of the output current, voltage, and robustness to load variation are obtained with the sliding mode controller.

A new super-twisting sliding mode control (STSMC) based direct instantaneous power control (DPC) of pulse width modulation (PWM)-rectifier connected to grid is studied in this paper. The new STSMC-...

Several applications have recently been found in renewable energy systems, industrial applications and active filters that utilize flying capacitors converters. Thanks to their unique ability to generate multiple voltage levels. These converters reduce voltage constraints among cells. This reduces the transmission losses, high switching frequencies and provides a better harmonic content. However, it is necessary to choose a good control to reach all these advantages. To ensure optimum operation of the multicellular converter it is essential to keep the voltages of the flying capacitors at their target operating levels. This paper proposes a fuzzy logic-feedback linearization control for three cells flying capacitor chopper. This control maintains simultaneously the capacitor’s voltages and the output current to their references. Simulation results carried out accomplished utilizing Matlab / Simulink software verify the robustness of the suggested law during disturbances. The command law is compared to the natural balanced control based on pulse width modulation (PWM) control to confirm its good performances.

A two-cell power chopper system will be studied in this paper. The topology of this chopper is based on a combination of two cell switching interconnected via a flying capacitor. The system is a particular hybrid dynamical one which induces new and difficult control problems. In this paper, such problem is tackled by a new control concept based on Petri Nets modeling. The main advantage of this control is to use a discrete event algorithm for both current tracking and capacitor voltage balancing with the ability to drive directly the chopper switching components, by respecting the tolerance errors of load current and capacitor voltage. Simulation and experiment tests are carried out to verify the feasibility and effectiveness of the proposed control. The obtained results show that; the proposed controller presents good performances, in terms of both current tracking and voltage balancing compared to conventional existing controls according to the variation of the tolerance errors.