This article proposes two generalized multilevel inverter configurations that reduce the number of switching devices, isolated DC sources, and total standing voltage on power switches, making them suitable for renewable energy sources. The main topology is a handles sources by ten switches to create twenty-five levels. Based proposed inverters are introduced indicate flexibility in designing al...

A micro grid consists of cluster of loads and distributed generators that operate as a single controllable system. As an integrated energy delivery system micro grid can operate in parallel with or isolated from the main power grid. The micro grid concept introduces the reduction of multiple reverse conversions in an individual AC or DC grid and also facilitates connections to variable renewabl...

In the process of integrating renewable energy sources into DC microgrids, isolated bidirectional bridge plays a crucial role. Under load disturbances, voltage fluctuations in microgrid can affect system stability. This study focuses on using Genetic Algorithm to optimize parameters three typical DAB controllers (PI controller based pole placement, sliding mode controller, and model predictive ...

To make full use of the power microgrid and improve reliability supply system, a flexible interconnection control strategy for DC cluster based on isolated bid...

In this paper, a new two-input isolated boost dc-dc converter based on a distributed multi-transformer structure which is suitable for hybrid renewable energy systems is investigated and designed. With a novel transformer winding-connecting strategy, the two input ports can be decoupled completely, so the proposed converter can draw the power from the two different dc sources, which have low ou...

Power electronic converter systems for applications such as telecom, automotive, and space can have dc voltage buses that are backed up with batteries or super-capacitors. These batteries or super-capacitors are connected to the buses with bidirectional dc–dc converters which allow them to discharged or charged, depending on the operating conditions. Bidirectional dc–dc converters may be isolat...

A new form of magnetically coupled DC/DC converter is proposed for medium power applications (250 W to 2 kW), requiring a high-voltage gain, short inductive charging time and galvanic isolation. The proposed converter can be realised using a unique Y-source impedance network and a two-switch push–pull circuit with voltage-doubling rectification. The converter’s voltage gain is presently not mat...

To my family i ACKNOWLEDGMENTS The research presented in this thesis was conducted at Delft University of Technology, the Netherlands, in the Electrical Power Processing (EPP) group headed by Professor Braham Ferreira. This is the place where I spent six memorable years towards my Master and Ph.D. degrees. Many people have been involved during this time and this thesis would not be completed wi...

In this paper, several optimum structures of a cascaded multilevel inverter is proposed. This optimization is based on generation a constant number of output voltage levels by using minimum number of power switches or dc voltage sources or minimum amount of blocked voltage by power switches. In addition, the optimum structure for a constant number of dc voltage sources by using minimum number o...

Hybrid electric vehicles (HEVs) offer many advantages, such as high fuel economy, low emissions, and silent operation. In HEVs, there are two or more different voltage buses for different purposes of the vehicle operation. There are needs of galvanically isolated bidirectional DC-DC converter to link different DC voltage bus and transfer energy back and forth. For example, on of the DC-DC conve...