Browsing by Author "Perumal, T."

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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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    Economic feasibility studies of simple and discounted payback periods for 1 MWp ground mounted solar PV plant at tirupati airport
    (wiley, 2022) Mohan, K.S.; Mahapatra, S.; Febin, J.L.F.; Perumal, T.; Raj, S.; Prabhakaran, P.
    Impending exhaustion of fossil fuels and concerns related to environmental pollution and climate changes have led to extensive usage of renewable energy sources in the utility grid. Among the renewable energy sources, solar photovoltaics (PVs) are gaining popularity and are considered a potential solution for future electrical energy crises. Despite the technical benefits of solar PV, an economic feasibility analysis is critical in assessing the viability of a long-term solar PV project. In this chapter, the economic feasibility of a ground-mounted solar PV system at Tirupati Airport, India, is carried out considering two leading economic indices-simple payback period (SPP) and discounted payback period (DPP). The performance analysis between the two payback periods and a comparison table is presented. Finally, better energy-efficient measures like replacing the existing CFLs with LEDs are highlighted in this chapter to reduce operational costs and energy consumption, resulting in direct monetary benefits. © 2022 Scrivener Publishing LLC. All rights reserved.