Voltage source converter based multi – terminal DC grids (VSC MTDC) are widely used for integration of renewable resources. Control these requires vector control method, which includes inner and outer current controllers, tuning controllers is very important. Conventionally methods consider approximated linear model to tune the proportional integral (PI) parameters voltage (VSC) fails produce o...

This paper proposes a new structure and control scheme for future microgrid-based power system, which is designed to achieve seamless operation in both islanded grid-connected modes, while the load appropriately shared by all units (i.e., renewable sources, energy storage systems grid). The proposed method, involves physical separation of microgrid from grid using AC/DC/AC converters, ensures s...

Abstract: Interest in DC microgrids is rapidly increasing along with the improvement of DC power technology because of its advantages. To support the integration process of DC microgrids with the existing AC utility grids, the form of hybrid AC/DC microgrids is considered for higher power conversion efficiency, lower component cost and better power quality. In the system, AC and DC portions are...

Most of the HVDC power converters with thyristor valves are assembled in a converter Bridge of Six pulse configuration. Converter transformers with one DC side winding as an ungrounded star connection and the other a delta configuration. Comparative studies of the two systems of HVDC CIGRE model without STATCOM and with STATCOM were performed. In these case, the consideration was the converter ...

In this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. In addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. In the proposed control metho...

This study examines a new approach to selecting the locations of unified power flow controllers (UPFCs) in power system networks based on a dynamic analysis of voltage stability. Power system voltage stability indices (VSIs) including the line stability index (LQP), the voltage collapse proximity indicator (VCPI), and the line stability index (Lmn) are employed to identify the most suitable loc...

Both Hybrid Electric Vehicles (HEVs) and Electric Vehicles (EVs) need a traction motor and a power inverter to drive the traction motor. The requirements for the power inverter include high peak power, optimum consumption of energy, low output harmonics and inexpensive circuit. In this paper, a new structure of multilevel inverter with reduced number of switches is proposed for electric vehicle...

The research presented in this thesis have been performed in 2012 at the Center for Advanced Power Systems (CAPS) of the Florida State University (FSU). Topic of research is the concept for the future All Electrical Ship (AES) of the U.S. Navy. Primary focus of this thesis is on a novel approach on modeling and simulation of electrical power supply system components using Scattering parameters ...

In this paper, a new embedded Z-H (EZ-H) buck-boost converter is proposed. In this topology, two identical dc voltage sources are embedded in a LC network in a series connection with the inductors. The proposed converter eliminates the shoot-through (ST) switching state and there is no need for a front-end diode. Other advantages of the proposed topology are having capability of buck and boost ...