Browsing by Author "Mohan Krishna, S.M."

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    A Novel PR Controller with Improved Performance for Single-Phase UPS Inverter
    (Institute of Electrical and Electronics Engineers Inc., 2021) Prabhakaran, P.; Mohan Krishna, S.M.; Febin, F.D.; Perumal, T.
    Modern uninterrupted power supplies (UPS) are gaining popularity as they can deliver clean and high-quality power under extreme load condition for sensitive devices (like medical, military and communication equipment). Traditional proportional-integral (PI) based control for UPS system provides high-quality output but suffers from the poor dynamic response. In this paper, a novel proportional resonant (PR) controller is proposed for controlling the output voltage of a single-phase inverter. The proposed controller provides a fast-dynamic response, low or zero steady-state error, and reduced total harmonic distortion (THD). A detailed step by step procedure to design the novel controller is presented based on the specific criteria (like steady-state error, overshoot, etc.). Due to the fast response, the proposed PR controller is also suitable for EV charging applications (specifically to the vehicle to load charging). Simulation and experimental results are presented to validate the feasibility and efficacy of the proposed controller. © 2021 IEEE.
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    Smart grids and microgrids: Technology evolution
    (wiley, 2022) Prabhakaran, P.; Subramaniam, U.; Mohan Krishna, S.M.; Febin, J.L.F.; Brijesh, P.V.
    The power supply is one of the most important issues of our time. In every country, all over the world, from refrigerators to coffee makers to heating and cooling, almost everyone in the world needs to have access to power. As the global demand rises, new methods of delivering power, such as smart grids and microgrids, have, out of necessity or choice, been developed and researched. In this book, modern and advanced concepts of both microgrid and smart grid technology are introduced. Beginning from the brief fundamental concepts of microgrids and its various constituents this team of experts discusses different architectures, control issues, communication challenges, measurement, stability, power quality and mitigation, protection, and power electronic aspects of the microgrid system. Through this book, tools and techniques needed to design both microgrids and smart grids are discussed. Recent and developing topics like smart meter impact, remote data monitoring, communication protocols, cybersecurity, artificial intelligence, big data, IoT, and many others are covered. Furthermore, this new volume also covers simulation and stability analysis tools pertaining to microgrids and smart grids. Throughout the book, detailed examples of microgrid and smart grid design and development strategies are provided, based on different constraints and requirements. Case studies, numerical models, and design examples are also included. Whether for the veteran engineer or student, this is a must-have volume for any library. Audience: Engineers, scientists, industry professionals, students, and other lay people involved in the business of smart grids and microgrids. © 2022 Scrivener Publishing LLC. All rights reserved.