Zero Voltage Switching Converters

In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and qua si-resonant DC link converters is discussed. One of the most promising quasi-res onant DC links reported in the literature is implemented and tested in a battery charge r application. Simulated resonant link voltage and current waveforms are analyzed. IGBT swi tching waveforms under zero voltage conditions are investigated. Measured waveforms are s hown and the converter and the overall battery charger efficiency are measured

An Overview of Wind Power Generation and Design Asp Ects in India

There is huge activity in wind power, pan-India with the instal led capacity increasing to 10,000MW. India today has the fifth largest installed capacity of wind power in the world w ith 11087MW installed capacity and potential for on-shore capabilities of 65000MW. However the plant load factor (PLF) in wi nd power generation is very low, often in the single digits. The increase in interest in wind energy is due to inves tment subsidies, tax holidays, and government action towards renewable energy playing a big part in nation's energy system. T here is a need to generate environment friendly power that not only raises energy efficiency and is sustainable too. The time has come for moving to generation based subsidies and understanding the drawbacks associated with wind power in India. The capital cost of wind power is third higher than Conventional thermal power; further electrical problems like v oltage flicker and variable frequency affect the implementation of wind farm. However advances in technologies such as offshore construction of wind turbines, advanced control methodologies, and simulation of wind energy affecting over all grid performance are making a case for wind energy

Automatic Visual Inspection System for Pcbs

In the modern world of technology, all the technologies are moving towards the digital implementation of product. In which the heart of this electronic production is the PCB. So there is need of producing zero defects PCBS. The defect in the PCBs are detected using the MATLAB Image Processing. We are using morphological operations such as erosion, dilation, opening, closing which helps in finding certain type of defects. This paper presents Automatic visual inspection system for producing PCBS with minimum errors or zero defects which will increase efficiency of the product

Vehicle Tracking System Using GPS And Android Os

An efficient vehicle tracking system is designed and implemented for tracking the movement of any equipped vehicle from any location at any time. The proposed system made good use of a popular technology that combines a Smartphone application with a . This will be easy to make and inexpensive compared to others. The designed in-vehicle device works using Global Positioning System (GPS) and Global system for mobile communication / General Packet Radio Service (GSM/GPRS) technology that is one of the most common ways for vehicle tracking. The device is embedded inside a vehicle whose position is to be determined and tracked in real-time used to control the GPS and GSM/GPRS modules. The vehicle tracking system uses the GPS module to get geographic coordinates at regular time intervals. A Smartphone application is also developed for continuously monitoring the vehicle location. The Google Maps API is used to display the vehicle on the map in the Smartphone application. Thus, users will be able to continuously monitor a moving vehicle on demand using the Smartphone application and determine the estimated distance and time for the vehicle to arrive at a given destination. In order to show the feasibility and effectiveness of the system, this paper presents experimental results of the vehicle tracking system and some experiences on practical implementations