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6 results on '"Govindaraju, Chinnathambi"'

1. Hydroponic‐based smart irrigation system using Internet of Things.

Author

Lakshmiprabha, Kakkanallur Ethirajan and Govindaraju, Chinnathambi

Subjects
*INTERNET of things, *IRRIGATION, *HYDROPONICS, *CROP yields, *AGRICULTURE, *AGRICULTURAL productivity
Abstract

Summary: Agriculture is a science that deals with the cultivating the soil, growing crops, and raising livestock. In India, the agricultural sector contributes GDP of around 16% and 10% of export earnings. Due to the advancement in smart technologies, the different types of irrigation techniques such as hydroponics and aeroponics are utilized for higher crop yields in a small area. In this work, the smart irrigation system using Internet of Things (IoT) is proposed for hydroponic system. Further, the experimental prototype is developed, and real‐time physical data such as temperature, humidity, and water flow are monitored, controlled, and logged with the help of ThingSpeak IoT platform. Results demonstrate that the proposed system is capable of monitoring and controlling the hydroponic environment and can be able to yield higher crop production. [ABSTRACT FROM AUTHOR]

Published
2023
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2. Design and Realization of Ultra Gain Boost Seven Level Inverter for Solar PV System

Author

Palanisamy Sellappa Gounder and Govindaraju Chinnathambi

Subjects
Total harmonic distortion, Maximum power principle, Computer science, business.industry, Photovoltaic system, Electrical engineering, Inverter, Electrical and Electronic Engineering, Switched capacitor, business, Pulse-width modulation, Maximum power point tracking, Voltage
Abstract

A new triple gain boost seven-level inverter is proposed for solar photo voltaic (PV) system suitable for standalone and grid-connected operations. The system is developed with a boost cascaded two-stage configuration. The principal stage comprises of a high gain DC–DC converter to boost and normalise the input DC voltage with a single switch high gain converter (SSHGC), and the subsequent stage comprises of new multilevel inverter (MLI) topology with triple voltage gain to produce seven level AC. Proposed SSHGC is suitable for a wide conversion range. The switched capacitor techniques were employed to gain the voltage in MLI. The maximum voltage gain of the DC–DC converter is twelve and the voltage gain of the MLI is three, the resultant voltage DC–DC–AC is achieved up to 36. Modified Perturb and Observe (P&O) based maximum power point tracking (MPPT) algorithm is applied in SSHGC to achieve maximum power utilisation in PV module and sinusoidal pulse width modulation (SPWM) is realistic in MLI control. A prototype model of 200 Watts is developed to analyze the proposed system. The overall converter system efficiency reaches up to 92% with a total harmonics distortion (THD) of 0.18%.

Published
2021

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