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The purpose of this paper is to design and control the load's current of a Matrix Converter (MC) using both Fuzzy-PI and RST controllers in terms of tracking the reference and robustness. RST controllers present a time delay on the system's transient response. This technique is known to offer lower performance when it is used in complex and nonlinear systems. On the other hand, fuzzy-PI control offers...
This paper presents a robust voltage control intended for a photovoltaic system, the main objectives of the proposed control is to adapt with the parameter variations and load disturbances. Second order sliding mode controller, based on super twisting algorithm for DC-DC Buck converter is proposed. Applying SOSMC can improve the transient response of the system for a wide range of reference voltage...
This article discusses the modeling and control wind energy conversion system WECS, equipped by a double fed asynchronous generator, which use the topology that stator is connected direct to the grid while the rotor is connected to grid through a back-to-back converter. The control strategy is applied to control active and reactive powers of the rotor side converter RSC with linear PI controller....
In this paper, a nonlinear flatness and sliding mode controllers of a Fuel Cell and Supercapacitor (FC/SCs) DC-link voltage are proposed and validated by the simulation results. The nonlinear flatness strategy provides a simple way to achieve a linearizing feedback control law, which allows giving an exponential tracking of the desired energy references of FC and SCs. The ideas behind the proposed...
This paper presents advanced power management strategy for a stand-alone hybrid power system. The proposed system consists of a photovoltaic panel, Proton exchange membrane fuel cell and a battery-electrolyzer-super capacitor energy storage system. All the system components are connected to the same DC voltage bus through appropriate Dc-Dc power converters and supposed to be controlled by independent...
This paper deals with the power generation in variable speed wind turbine systems. In this context, the wind energy conversion system (WECS) is equipped with a doubly-fed induction generator (DFIG) and two back-to-back five-level Neutral-Point-Clamped (NPC) converters in the rotor circuit. The modeling and the control of the five-level converter is presented. For controlling the DC-link voltage of...
This paper presents a new Structured H∞ Design Method of proportional-integral (PI) controllers for Grid Feeding Connected Voltage Source Converters, based on MATLAB tools for tuning linear control systems in the frequency domain. The study consists in elaborating optimization of an H∞ robust control strategy for a Voltage Source Inverter (VSI) connected to the grid through a LCL filter. The PI controller...
This paper presents a comprehensive modeling of a three-phase cage induction machine used as a self-excited squirrel-cage induction generator (SEIG), and discusses the regulation of the voltage and frequency of a self-excited SEIG based on the action of the static synchronous Compensator (STATCOM). The STATCOM with the proposed controller consists of a three-phase voltage-sourced inverter and a DC...
This paper proposes a sliding mode controller for air supply subsystem on a PEM Fuel Cell system in order to regulate and replenish the oxygen depleted from the Fuel Cell cathode during stack current demands. According to the stack current, a reference value of air flow was obtained with the steady-state analysis of oxygen excess ratio (OER). To ensure the system working in the reference value of...
This paper integrates a suitable controller in DC-bus voltage regulation loop of the direct current control (DCC) algorithm for three-phase grid-connected PV system. The proposed controller named fractional order PI (FO-PI) controller adjust the integration order from integer to real value. The FO-PI controller provides a faster settling time and stands the parameters variation and the external disturbances...
This work is a study, analysis and implementation of the indirect space vector modulation for three to three phase matrix converter. The input factor is fixed to zero, an over modulation is presented. The algorithm is implemented on dSPACE 1104 with real voltage sensors and an acquisition of the results using control desk and oscilloscope is presented.
This paper presents the control of a photovoltaic distributed generation system based on dual-stage topology of DC-DC boost converter and three-level neutral-point-clamped (NPC) voltage source inverter (VSI). Decoupling control strategy of three-level VSI is proposed to control the current injected into the grid, reactive power compensation, and DC-link voltage. The resulting system is able to extract...
In this paper, μ-synthesis is used to design a robust voltage controller for the cascaded boost dc-dc converter in continues conduction mode. The open loop is analyzed using a nominal frequency transfer function. The state space averaging technique and a structured uncertainty modeling approach are used to develop the controller model. The D-K iteration method is used to design a robustly performing...
This paper proposes a contribution to control strategy for hybrid power source based on fuel cells as the main energy source and supercapacitors as the auxiliary power source for vehicle applications. First, 3-phase parallel boost converters and 3-phase parallel bidirectional converters are proposed with a switching interleaving technique as controls. Mathematical models of the FC and the supercapacitor...
This paper deals with the design of a new robust controller to solve automatic generation control (AGC) problems in interconnected multi-area power system using the meta-heuristic Bat Inspired Algorithm (BA). The novel design approach based on Bat algorithm is proposed to reach the optimal values of the Proportional-Integral-Derivation (PID) controller parameters in order to improve the load frequency...
A new structure of paralleling four leg shunt active power filters is presented in order to compensate the four-wire electrical network supplying the high power of non-linear singlephase loads. An effective selectivity of control with fuzzy logic and Three Dimensional Space Vector Modulation (3D-SVM) introduced in this configuration of SAPFs to maintain the same amplitude and frequency of output current...
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