A Variable Structure System (VSS) formulation and bond graph approach are used to develop a novel scheme for synthesizing reduced order models of switched systems. Switches are physical mechanisms that discontinuously redirect power, and switched systems employ switches for more efficient power conversion and/or to incorporate a control structure. A variety of power converters including electro...

this paper proposes a flexible power electronic transformer (fpet) for the application in the micro-grids. the low frequency transformer is usually used at the point of common coupling (pcc) to connect the low voltage grid and utility network to each other. the conventional 50hz transformer results in enhanced low voltage-grid power management system during grid-connected operation. in this pap...

This paper is concerned with behavior analysis and improvement of wind turbines with Doubly Fed Induction Generator (DFIG) when using a new fractional-order control strategy during wind variations. A doubly fed induction generator, two types of variable frequency power electronic converters and two input wind waveforms are considered. A fractional-order control strategy is proposed for the wind...

We are going to present here a number of results on open research issues in the area of Modeling, Simulation and Optimization in Electrical Systems. The results range from methodologies to applications and include: power quality problems in electronic converters, control of power in complex computing environment, optimization methods for power control systems.

The application of sliding mode, a non-linear robust and self-contained approach, to the control problem of electronic power converters, is outlined and illustrated. On-line sliding mode control is suited to multilevel power converters as they are inherently variable structure systems. Obtained controllers are robust concerning parameter variation and perturbations and provide "Just In Time" sw...

The utilization of photovoltaic energy becomes an important source of electrical energy with the advancement in power electronic technology. The dc-dc converters is one of inevitable part of renewable energy system, for connecting the PV panel to the grid or AC load through an inverter. MPPT (Maximum Power Point Tracking) maximizes the power production of the PV panel. The advantages of high st...

Power electronics have been and will continue to be an enabling technology for energy production, storage, transmission, distribution, consumption. electronic converters are usually the critical links in electrical systems, affecting system security, safety, efficiency, cost-of-ownership. As a result, reliability requirements power components converter systems generally become more stringent, e...

For medium-voltage power electronic applications, multilevel converters have become a popular option. While conventional twolevel converters utilize a direct series connection of switches to meet medium-voltage requirements, multilevel converters allow a higher voltage handling capability with reduced harmonic distortion and lower switching power losses. One of the most important requirements i...

DC/DC boost converters are usually used to interface the DC output of modern distributed generation resources with the AC system. Distributed generation modules are aggregated to yield the necessary power using either parallel or cascaded architecture. Detailed modeling of an interconnection system incorporating cascaded architecture has not been considered in previous researches. In this paper...