Introduction

In major applications like major computer installations, process control in chemical plants, safety monitors, IC units of hospitals etc., even a temporary power failure may lead to large economic losses. For such critical loads, it is of paramount importance to use UPS systems.

But all UPS equipments should be completely de-energized for preventive maintenance at least once per year. This limits the availability of the power system. Now there are new UPS systems in the market to permit concurrent maintenance.

High-Availab ....etc

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what type of file is c:\39b62b410e8a447f78d3 ....etc

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Almost all firms use UPS systems. They maintain the continuity of supply in case of power outages. But all UPS equipments regardless of manufacturer should be completely de-energized for preventive maintenance at least once per year. This limits the availability of the power system.

But now a ?days certain configurations of the UPS systems are there to permit concurrent maintenance so that we can overcome the above problem.

Each of the system configurations described in this paper has its own advantages and disadva ....etc

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Real Time Operating Systems for Networked Embedded Systems


Fire Alarm System

Problem
Hundreds of sensors, each fitted with Low Range Wireless
Sensor information to be logged in a server & appropriate action initiated
Possible Solution
Collaborative Action
Routing
Dynamic – Sensors/controllers may go down
Auto Configurable – No/easy human intervention.
Less Collision/Link Clogging
Less no of intermediate nodes
Fast Response Time
Secure

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PRESENTED BY:
T. Vennela


ABSTRACT:
The electric power supplied by a photovoltaic power generation system depends on the solar radiation and temperature. Designing efficient PV systems heavily emphasizes to track the maximum power operating point.
This work develops a three-point weight comparison method that avoids the oscillation problem of the perturbation and observation algorithm which is often employed to track the maximum power point. Furthermore, a low cost control unit is dev ....etc

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Teaching Utility Applications of Power Electronics in a First Course on Power Systems

Outline


Importance of teaching power electronics in a power systems course
Description of proposed approach consisting of four segments
Functional aspects of power electronics
Power device capabilities and Power Electronic Structures
Role of power electronics in utility applications
Details of the power electronics structures


Importance


Increasing applications of Power Elec ....etc

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D. Menniti, A. Pinnarelli
Electronic, Computer and System Science Department

U. De Martinis, A. Andreotti
Electric Engineering Department


Abstract –
Flexible AC Transmission Systems (FACTS) use power electronic components to enhance controllability and capability of electrical power system. FACTS devices are able of opportunely modify voltage, phase angle and/or impedance and then the power flows at particular points in power systems . One of the more intriguing and potentia ....etc

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Definition
Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data ....etc

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Definition
Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data ....etc

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....etc

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