Project center kumbakonam

International School in Kumbakonam

project center in Tirunelveli  Wireless internet and cellular mobile services are essential part of our life infect modern world fully relies on wireless communication. Due to increase of users all around the world and rapid developments in different wireless technologies we may face crisis in future because continues increases in demand of data transmission could not be full fill in future keeping in mind the lack of radio frequency bandwidth . This project aims to demonstrate that Li-Fi which is an emerging branch of optical wireless communication can provide us matured solution of this fundamental problem. Professor Harald Haas who is recognized worldwide as a creator of Li-Fi technology gives his concept of transmission of data with the help of illumination .This procedure consists of sending bundles of information through visible light spectrum via LED light bulb .Now a day’s Wi-Fi (Wireless Fidelity) is most commonly use for Wireless indoor communication, which requi...

project center in Tirunelveli  Objective of this project is helping the blind/old persons travelling easy and illiterate people as well as pedestrian people using an interactive embedded Wireless Sensor Networks. The term blindness refers to the people who have no vision at all or people who have less vision. Most of the blind people take support from guide dogs to walk. We are explaining about the GPS and voice navigation system for blind people. In this blind people issues the commands and then receive the response using audio signals. GPS receiver is used to receive the values of the latitude and longitude continuously. With the advancement in technology usage of voice recognition is easier to send commands regarding directions to the blind people. As an application of this GPS technology here GPS based voice alert system for the blind persons are very useful, compact and simple system to handle. Today the increase in traffic cause pedestrian to the road harder. The t...

project center in trichy A hybrid battery power module composed of lead acid and LiFePO4 batteries for BLDC motor drive is proposed in this study. The lead acid batteries are used as the basic power source and directly connected to the motor drive without any power conversion losses. In addition, to enhance the instant power supply capability to the motor drive, the LiFePO4 batteries are integrated into the proposed hybrid battery power module. A two-phase interleaved dc converter is adopted to control the power flow among the LiFePO4 batteries, lead acid batteries and the motor drive. The common power requirement from the motor drive is designed to be totally provided by the lead acid batteries. Once the power demand became higher than the common level, the additional part would be instantly provided by the LiFePO4 batteries through the interleaved dc converter. The life of the lead acid batteries can therefore be enhanced by the high charging/discharging capability of the in...

project center in trichy This paper proposes a new single-phase single-stage switched-boost inverter with four switches. Like the quasi-Z-source inverter (qZSI) and quasi-switched boost inverter (qSBI), the proposed inverter has the main features as continuous input current, buck/boost voltage with single-stage conversion and shoot-through immunity. Compared to the qSBI, the proposed inverter uses one more capacitor and one less switch. This paper presents the operating principles, PWM control strategy, parameter design guidelines, and simulation results for the proposed inverter. To verify the performance of the proposed inverter, an 800 W prototype was built with an 110 V/50 Hz output voltage in stand-alone and grid-connected modes. The simulation and experimental results matched those of the theoretical analysis.

project center in trichy This paper presents a dual Modular Multilevel Converter (MMC) topology that utilizes energy exchange between adjacent arm Sub-Modules (SM), operating with out-of-phase modulation. The proposed configuration is applicable to medium-voltage, high-power variable-speed drives incorporating open-end stator winding machines. A novel concept of power redistribution between adjacent SMs in the dual MMC topology is realized through high-frequency transformer-based dc-dc converter modules. This concept offers a significant reduction in the sizing requirement of the SM capacitance and the stored energy in the MMC system, while avoiding the problem of wide voltage fluctuations of SM capacitors, especially at low operating frequencies. The proposed configuration can produce dc voltage; therefore, a machine speed-range from zero speed to the rated speed is possible under the rated torque operating condition. The operating principles of the proposed dual MMC configurati...

project center in trichy A hybrid battery power module composed of lead acid and LiFePO4 batteries for BLDC motor drive is proposed in this study. The lead acid batteries are used as the basic power source and directly connected to the motor drive without any power conversion losses. In addition, to enhance the instant power supply capability to the motor drive, the LiFePO4 batteries are integrated into the proposed hybrid battery power module. A two-phase interleaved dc converter is adopted to control the power flow among the LiFePO4 batteries, lead acid batteries and the motor drive. The common power requirement from the motor drive is designed to be totally provided by the lead acid batteries. Once the power demand became higher than the common level, the additional part would be instantly provided by the LiFePO4 batteries through the interleaved dc converter. The life of the lead acid batteries can therefore be enhanced by the high charging/discharging capability of the int...