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The modular multilevel converter (MMC) has become an attractive option for dc/ac conversion in many power system applications, in particular, for HVDC transmission. Due to its parallel arrangement of phase legs, the MMC is known to be a wye-configured architecture. In this paper, the equivalent delta formulation of the conventional wye architecture is introduced. The delta-configured MMC, enabled...
This paper presents the characterization of inversion coefficient and technology current for 14nm FinFET. Analog performance parameters, their variability and controlability, including transconductance effieincy, intrinsic gain, gain-bandwidth product, flicker noise and current mismatching, are then characterized in terms of inversion coefficient. These characterized relations are used for sizing...
Real-time measurement of rat/guinea pig spinal cord mechanics during ex vivo experiments remains a nontrivial task due to the small size of the cord and the short impulse duration. To address this issue, we present an inexpensive strain measurement platform. It consists of an array of flexible, Parylene-C-passivated, pointed cantilevers of polyvinyl fluoride (PVDF) that penetrate the wall of an acrylic...
This paper studies the dynamic impacts of fast-charging process of battery stacks in the electric vehicles (EVs) on the active distribution networks with the integration of medium-scale wind energy systems. Firstly, the fast-charging model of battery stacks is proposed for dynamic stability analysis. Secondly, the control strategies for IGBT-based AC-DC rectifier and DC-DC converter in the charging...
The verification of mixed-signal SoC is emerging as the most significant challenge, and with its cost surpassing the chip design cost. This paper presents a new automated verification methodology namely RVM (recursively verifying and modeling) and a set of supporting electronic design automation tools. The RVM methodology is built on the existing design flow and environments but with three major innovations...
There is a great deal of information, which is pertinent to geographical location and difficult to manage using traditional management methods during the course of managing radio station. Web geographical information system (WEBGIS) can organize and deal with the above information effectively. Consequently, the WEBGIS of managing radio station, which is one of the sub-systems of the whole information...
This paper introduces an accumulative prediction method to predict the eye diagram for high speed signaling systems. We use the step responses of pull-up and pull-down to extract the worst-case eye diagram, including the eye height and jitter. Furthermore, the method produces the input patterns of the worst-case intersymbol interference. The algorithm handles signals of either symmetric or asymmetric...
Efficient solar-energy harvesting is fundamental to solar cell technology. Much research effort has been devoted to the construction of new light-harvesting structures, including the use of semiconductor quantum dots (QDs), to improve the widespread availability of solar cells. In this paper, a new light-harvesting architecture is considered, which utilizes quantum dots. The proposed architecture...
A new graph reduction approach to symbolic circuit analysis is developed in this paper. A Binary Decision Diagram (BDD) mechanism is formulated, together with a specially designed graph reduction process and a recursive sign determination algorithm. A symbolic analog circuit simulator is developed using a combination of these techniques. The simulator is able to analyze large analog circuits in the...
Passivation cracking is one of the main failures of integrated circuits (ICs) and thermo-mechanical failures are the root cause. A major cause for these failures is due to the mismatch of thermal and mechanical parameters while manufacturing or working, especially stress concentration at the interface and the edge. The ICs for different fixing position endure different thermal cycles, overload and...
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