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AC microgrids are a convenient approach to integrating distributed energy systems with utility power systems. On the other hand, DC micro-grids can lead to more efficient integration of distributed generation. They are the preferred topology for present shipboard, aircraft and automotive power systems and hold promise for future environmentally friendly(More)
The benefits of variable-frequency drives (VFDs) have not been fully realized in many applications because they compete in the power density of legacy equipment, such as electromechanical motor controllers. This is particularly the case in Navy shipboard systems where sensitive equipment is in close proximity to VFDs. This paper compares the power(More)
Although the operation of a three-phase current source rectifier (CSR) for ac-to-dc conversion using phase control or low-frequency pulse control is well established in a wide variety of applications, CSR realization using high-frequency pulsewidth-modulation control has been recently studied as a potentially competitive alternative to a voltage source(More)
This paper identifies the characteristics of a current source inverter operating in discontinuous conduction mode, and proposes a new multiobjective pulse-width modulation (PWM) method to mitigate voltage boosting and harmonic distortion effects. The method takes into account load impedance effects. Controls are also developed to enable transition between(More)
The opportunities for both power density and efficiency improvements of photovoltaic (PV) inverter have come with the development of commercially available wide bandgap (WBG) devices such as Gallium Nitride (GaN), and Silicon Carbide (SiC). The focus of this paper is to demonstrate a methodology for achieving a minimum volume of the differential and common(More)
The motivation toward the application of DC microgrids is increasing as a result of the increasing number of electronic loads. DC microgrids decreases the number of conversions, avoids the voltage harmonics and reactive power associated with AC microgrids, is a lower cost solution and is capability of supplying a high quality voltage to sensitive dc loads.(More)
Recent developments in the design of power electronic elements with higher voltage and power rating and medium/high frequency enable the use of solid state transformer at different voltage levels for microgrid design. In this study, the concept of a Multi-Port Solid State Transformer (MPSST) for distribution network application is introduced to achieve the(More)
Community DC microgrid is considered as an efficient solution for providing clean energy for residential areas. Connection of the DC microgrid to the AC utility grid would need a power electronic based rectifier. Voltage Source Rectifier (VSR) and Current Source Rectifier (CSR) are considered as the two options for such application. This study compares the(More)
A community DC microgrid is proposed that is embedded within an urban neighborhood in an underserved community in Milwaukee, Wisconsin. This community microgrid will be a proving ground for residential DC power distribution and sharing of renewable energy resources between homes. The system will be built into existing homes that have been vacated as a(More)
20 years as an Engineering Manager, developing high performance and standard drive products, with Rockwell Automation's Drives Division, in Mequon, Wisconsin. Mr. Weber received a BSEE degree (1978) from the University of Wisconsin, Madison, and is a member of IEEE. He is currently working on his MBA. He has developed power conversion systems and drives for(More)