Sanjeevikumar Padmanaban

Bio: Sanjeevikumar Padmanaban is an academic researcher from Aarhus University. The author has contributed to research in topics: Photovoltaic system & Boost converter. The author has an hindex of 34, co-authored 367 publications receiving 5244 citations. Previous affiliations of Sanjeevikumar Padmanaban include Sathyabama University & National Institute of Technology, Puducherry.

Configurations of Modified SEPIC Converter with Switched Inductor Module (MSC sI ) for Photovoltaic Application: Part-II

Abstract: The proposed work is extended configurations of Modified SEPIC Converter (MSC) and Modified SEPIC Converter with Switched Module (MSC SI ). The proposed three configurations are derived by replacing two inductor of MSC by two Switched Inductor (SI) modules, namely Modified SEPIC Converter with XYL configuration (MSC SI -XYL), Modified SEPIC Converter with LYZ configuration (MSC SI -LYZ) and Modified SEPIC Converter with XLZ configuration (MSC SI -XLZ) to improve or increase the overall gain of the converter. The key feature of proposed configuration is: (i) single switch topologies, (ii) no reverse current flow from load to source due to large inductor at the input side, (iii) high voltage conversion ratio. The detailed analysis of three configurations is done in terms of component count, voltage conversion ratio and efficiency. The mathematical analysis and simulation results validates the functionality of three configurations.

A Bibliographical Survey on Software Architectures for Smart Grid System

Abstract: Smart grid software interconnects multiple Engineering disciplines (power systems, communication, software and hardware technology, instrumentation, big data etc.). The software architecture is an evolving concept in smart grid systems in which systematic architecture development is a challenging process. The architecture has to realize the complex legacy power grid systems and cope up with current Information and Communication Technologies (ICT). The distributed generation in smart grid environment expects the software architecture to be distributed and to enable local control. Smart grid architecture should also be modular, flexible and adaptable to technology upgrades. In this paper, the authors have made a comprehensive review on architecture for smart grids. An in depth analysis of layered and agent based architectures is presented and compared under various domains.

Practical experience with control of drives of an accumulator in a web processing continuous line

Abstract: The paper contributes to a study of web a vertical type accumulator in a continuous line. It is focused on control of parallel drives driving the looper car and is pointing out key problems the engineer meet at tuning controllers of the accumulator drives. Although the control structure is well known, practical hints to estimate empirically some parameters of the systems are presented. The accumulator mechanics was modelled and simulated results are presented. They are compared with the results obtained by measurement on the real accumulator system. The results obtained by both methods show a good agreement that confirm correctness of the simulation model.

Conducted Electro Magnetic Interference Spectral Peak Mitigation in Luo Converter Implementation Using FPGA Based Chaotic PWM Technique

Abstract: Chaotic switching is a newly evolve randomization method which can suppress conducted electromagnetic interference generated within the DC-DC converter. It can suppress the spectral peaks present in the frequency band effectively by spread spectrum technique and can spread it over the wide range of frequency band implying EMI suppression. In this paper, a chaotic PWM technique based on RCFMFD scheme is generated through Field programmable gate array (FPGA) for suppressing the conducted electromagnetic interference (EMI) generated within the Luo converter. A hardware prototype of Luo converter was developed in order to analyze EMI reduction through FFT analysis by comparing both traditional periodic PWM switching and chaotic PWM switching. The results obtained from the hardware setup shows significant reduction of EMI with Chaotic switching as compared to traditional PWM switching for both boost and buck operation of Luo converter.

I and i

Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

Exoelectrogenic bacteria that power microbial fuel cells

Abstract: The use of microbial fuel cells to generate electrical current is increasingly being seen as a viable source of renewable energy production In this Progress article, Bruce Logan highlights recent advances in our understanding of the mechanisms used by exoelectrogenic bacteria to generate electrical current and the important factors to consider in microbial fuel cell design There has been an increase in recent years in the number of reports of microorganisms that can generate electrical current in microbial fuel cells Although many new strains have been identified, few strains individually produce power densities as high as strains from mixed communities Enriched anodic biofilms have generated power densities as high as 69 W per m2 (projected anode area), and therefore are approaching theoretical limits To understand bacterial versatility in mechanisms used for current generation, this Progress article explores the underlying reasons for exocellular electron transfer, including cellular respiration and possible cell–cell communication