RIFAT YASIN B.E. 7th SEM

Bh i la i Ins t i tu te o f

CURRENT TIMES

The In-house Quarterly News letter of Electrical Engineering Department

VISIONTo contribute to the nation, by delivering

quality education and creating globally

competent professionals to serve

the industry and society.

Chief patron Sh. I .P.Mishra

Patron

Dr Arun Arora

Advisor

Dr (Mrs) A.P.Huddar

Advisory Board

Dr (Mrs ) S .Ray

Dr S.P.Shukla

Dr S.K.Sahu

Dr (Mrs) A. Gupta

Dr (Mrs) S.Tr ipath i

Dr G.C.Biswal

Prof. Uma P. Balara ju

Prof.Gourav Sharma

Prof. Alok Kumar

Prof. J .Panigrah i

Prof. Shraddha Kaushik

Prof. G.Shankar

Prof. Jyotsana Kaiwart

Edi tor

Dr N.Tr ipathi

S tudent Edi tor

N i t ish Pate l

Akanksha Hota

J igyasa Nandanwar

Amita Kumar

Paru l Shr ivastava

Nakshatra Mankar

Inside Issue

Polymer so lar ce l l

technology

Water based

rechargeable battery

Solar inver ters

Amazing facts

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Program Educational Objectives (PEOs)PEO-1 To impart sound foundation in Mathematics, Applied Science and Engineering to the graduates, which enables them to formulate, solve and analyze the problems in Electrical Engineering. PEO-2 To develop analyzing skill amongst graduates for technical interimplementation of ideas.PEO-3 To promote students for taking up new responsibilities and challenges in multidisciplinary projects.

New Year………..

With these words and Times”. Let`s take a fresh start towards new year with lots of achieving new heights. Moving fsome new. This editionbreakthrough in the area of Electrical Power for the coming years.

SUJOY MUKHERJEE

B.E. 7th SEM

Bh i la i Ins t i tu te o f Techno logy , Durg

CURRENT TIMES PP oo ww ee rr oo ff TT ee cc hh nn oo ll oo gg yy

house Quarterly News letter of Electrical Engineering Department

January,

VISIONTo contribute to the nation, by delivering

quality education and creating globally

competent professionals to serve

the industry and

MISSIONTo create intellectually stimulating environment for learning, research and promotion of professional and ethical values, to develop a sense of responsibility, discipline and interest amongst activities leading to the welfare of the industry and society at large and to empower the students through lifelong learning for self upgradation and societal upliftment.

Program Educational Objectives (PEOs)To impart sound foundation in Mathematics, Applied Science and Engineering to the

graduates, which enables them to formulate, solve and analyze the problems in Electrical

To develop analyzing skill amongst graduates for technical interimplementation of ideas.

To promote students for taking up new responsibilities and challenges in multidisciplinary

New Year……….. New Start……..

New Achievements……..

words and season’s greetings a very warm a welcome to new edition of “Current Times”. Let`s take a fresh start towards new year with lots of enthusiasmachieving new heights. Moving forward with the success of past, and with the thougsome new. This edition of Current times is dedicated to the newest and safest technological breakthrough in the area of Electrical Power for the coming years.

Dr Nagendra Tripathi

ASHUTOSH

B.E. 7th

SELECTEDIN

AMBUJA CEMENT

Awarded with “certificate of merit” for securing top position in institute in B.E. 2nd SEM examination

EDITORIAL

Techno logy , Durg

CURRENT TIMES

house Quarterly News letter of Electrical Engineering Department

January, 2018

To create intellectually stimulating environment for learning, research and promotion of professional and ethical values, to develop a sense of responsibility, discipline and interest amongst students in various activities leading to the welfare of the industry and society at large and to empower the students through lifelong learning for self up-

To impart sound foundation in Mathematics, Applied Science and Engineering to the graduates, which enables them to formulate, solve and analyze the problems in Electrical

To develop analyzing skill amongst graduates for technical interpretation, designing and

To promote students for taking up new responsibilities and challenges in multidisciplinary

New Achievements……..

m a welcome to new edition of “Current enthusiasm a energy, and power of

, and with the thought of building Current times is dedicated to the newest and safest technological

Nagendra Tripathi

Editor

ASHUTOSH VERMAth SEM

CAT score 90 percentile and selected

in SGS Technical Services Private Limited

Selected for Early

M. tech program in

Researchers are making polymer cells that have the capabilities of capturing more light within the ridges. This includes the light they absorb from outside and the light that gets reflected from one ridge to another. These solar cells are made up of polymers that are lightweight, easy-to make and flexible. Their functioniis improved by a textured substrate pattern that lets the removal of a thin light absorbing layer. As the light absorbing layer goes through the small ridges, it maintains goodproperties in the cells.

Advantages of polymer solar cell technology

It uses the sun trapping systems in the most efficient manner.

The efficiency of solar cells improve by 20 percent. Power conversion efficiency of the light

polymers. There was also a 100% increase in the light captured at the red/near infrared band edge.

Water could form the basis for future, particularly inexpensive rechargeable batteries. Empa researchers have succeeded in doubling the electrochemical stability of water with a special saline solution. This takes us one step closer to using the technology commercially.

In the quest to find safe, low-cost batteries for the future, eventually we have to ask ourselves a question: Why not simply use water as an electrolyte? Water is cheap, in supply, doesn’t burn and can conduct ions. But it has one major it is only chemically stable up to a voltage of 1.23 volts. In other words, a water cell provides three times less voltage than a customary lithium ion cell with 3.7 volts, which makes it poorly suited for applications in an electric car. A costbattery, however, could be extremely interesting for stationary electricity storage applications.This problem can be overcome by using Saline solution without free water.The saline electrolyte has to be liquid but so concentrated as not to cwater.

For this purpose special salt sodium FSI (precise name: sodium bisThis salt dissolves extremely well in water: seven grams of sodium FSI and one gram of water produce a clear saline solution (see clip). As all the water molecules are clustered around the positively charged sodium cations in a hydrate envelope in this liquid, there are virtually no unbound water molecules left.

Polymer Solar Cell Technology

Water-based, rechargeable battery

Researchers are making polymer cells that have the capabilities capturing more light within the ridges. This includes the light

they absorb from outside and the light that gets reflected from one ridge to another. These solar cells are made up of polymers

to make and flexible. Their functioning is improved by a textured substrate pattern that lets the removal of a thin light absorbing layer. As the light absorbing layer goes through the small ridges, it maintains good electrical transport

ell technology

It uses the sun trapping systems in the most efficient manner.

The efficiency of solar cells improve by 20 percent.Power conversion efficiency of the light-trapping cells is 20% more than flat solar cells of

% increase in the light captured at the red/near infrared band edge.

Chandra Prakash , 6

the basis for future, particularly inexpensive rechargeable batteries. Empa researchers have succeeded in doubling the electrochemical stability of water with a special saline solution. This takes us one step closer to using the technology commercially.

cost batteries for the future, eventually we have to ask ourselves a question: Why not simply use water as an electrolyte? Water is cheap, in supply, doesn’t burn and can conduct ions. But it has one major it is only chemically stable up to a voltage of 1.23 volts. In other words, a water cell provides three times less voltage than a customary lithium ion cell with 3.7 volts, which makes it poorly suited for applications in an electric car. A cost-effective, water-based battery, however, could be extremely interesting for stationary electricity storage applications.This problem can be overcome by using Saline solution without free water.The saline electrolyte has to be liquid but so concentrated as not to contain any “surplus”

For this purpose special salt sodium FSI (precise name: sodium bis (fluorosulfonylThis salt dissolves extremely well in water: seven grams of sodium FSI and one gram of water

(see clip). As all the water molecules are clustered around the positively charged sodium cations in a hydrate envelope in this liquid, there are virtually no

Polymer Solar Cell Technology

based, rechargeable battery

trapping cells is 20% more than flat solar cells of

% increase in the light captured at the red/near infrared band edge.

Chandra Prakash , 6th Sem

the basis for future, particularly inexpensive rechargeable batteries. Empa researchers have succeeded in doubling the electrochemical stability of water with a special saline

cost batteries for the future, eventually we have to ask ourselves a abundant

drawback i.e

electricity storage applications.This problem can be overcome by using Saline solution without free ontain any “surplus”

(fluorosulfonylimide) is used. This salt dissolves extremely well in water: seven grams of sodium FSI and one gram of water

(see clip). As all the water molecules are clustered around the positively charged sodium cations in a hydrate envelope in this liquid, there are virtually no

The researchers have discovered that this saline solution up to 2.6 volts – i.e. nearly twice as much as other aqueous electrolytes. The discovery could be the key to inexpensive, safe battery cells; inexpensive because, apart from anything else, the sodium FSI cells can be constructed more safely and thus more easily than the familiar lithium ion batteries.

The system has already withstood a series of charging and discharging cycles in the lab. Until now, however, the researchers have been testing the anodes and cathodes oseparately – against a standard electrode as a partner. In the next step, the two half cells are to be combined into a single battery. Then additional charging and discharging cycles are scheduled.

A solar inverter, or converter or PVvariable direct current (DC) output of apanel into a utility frequency alternatingbe fed into a commercial electrical gridgrid electrical network. It is a criticalcomponent in a photovoltaic systemordinary AC-powered equipment. Solarspecial functions adapted for use wiincluding maximum power pointislanding protection.

Solar inverters may be classified into three broad types

1. Stand-alone inverters, used in isolated systems where the inverter draws its DC energy from batteries charged by photovoltaic arrays. Many standincorporate integral batterybattery from an AC source, when available. Normally these do not interface ingrid, and as such, are not required to haveislanding protection.

2. Grid-tie inverters, which matchsupplied sine wave. Grid-tie inverters are designed to shut down automatically upon loss of utility supply, for safety reasons. They do not provide backupower during utility outages.

3. Battery backup invertersa battery, manage the battery charge via an onboard charger, and export excess energyto the utility grid. These inverters are capable ofduring a utility outage, and are required to have anti

The researchers have discovered that this saline solution displays an electrochemical stability of i.e. nearly twice as much as other aqueous electrolytes. The discovery could be

the key to inexpensive, safe battery cells; inexpensive because, apart from anything else, the e constructed more safely and thus more easily than the familiar lithium ion

The system has already withstood a series of charging and discharging cycles in the lab. Until now, however, the researchers have been testing the anodes and cathodes o

against a standard electrode as a partner. In the next step, the two half cells are to be combined into a single battery. Then additional charging and discharging cycles are scheduled.

Kanchan Sahu, 6

PV inverter, converts the (DC) output of a photovoltaic (PV) solar

alternating current (AC) that can grid or used by a local, off-balance of system (BOS)–

system, allowing the use of powered equipment. Solar power inverters have

special functions adapted for use with photovoltaic arrays, point tracking and anti-

Solar inverters may be classified into three broad types:

, used in isolated systems where the inverter draws its DC batteries charged by photovoltaic arrays. Many stand-alone inverters also

battery chargers to replenish the source, when available. Normally

in any way with the utility e not required to have anti-

, which match phase with a utility-tie inverters are designed to

shut down automatically upon loss of utility supply, for safety reasons. They do not provide backup power during utility outages.

s, are special inverters which are designed to draw energy froma battery, manage the battery charge via an onboard charger, and export excess energy

the utility grid. These inverters are capable of supplying AC energy to selected loadsutility outage, and are required to have anti-islanding protection.

displays an electrochemical stability of i.e. nearly twice as much as other aqueous electrolytes. The discovery could be

the key to inexpensive, safe battery cells; inexpensive because, apart from anything else, the e constructed more safely and thus more easily than the familiar lithium ion

The system has already withstood a series of charging and discharging cycles in the lab. Until now, however, the researchers have been testing the anodes and cathodes of their test battery

against a standard electrode as a partner. In the next step, the two half cells are to be combined into a single battery. Then additional charging and discharging cycles are scheduled.

Kanchan Sahu, 6th Sem

, used in isolated systems where the inverter draws its DC alone inverters also

, are special inverters which are designed to draw energy froma battery, manage the battery charge via an onboard charger, and export excess energy

supplying AC energy to selected loadsislanding protection.

The first electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832.

The element Selenium conducts electricity only when a light is shined on it, in the dark it acts as an insulator.

A bolt of lightning can measure up to three million (3,000,000) volts, and it lasts less than one seconds

Just under 10 billion electric motors aexpected to grow to 12 billion by 2018.

In 2005, an Australian man wearing a nylon jacket and wool shirt built up 40,000 volts of static electricity, resulting in burned carpets, melted plastic, and a massive evacuation.

Just 1/3 of the energy in burning coal reaches the consumer as electricity.

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The first electric motor capable of turning machinery was invented by the William Sturgeon in 1832.

element Selenium conducts electricity only when a light is shined on it, in the dark it acts as an insulator.

A bolt of lightning can measure up to three million (3,000,000) volts, and it lasts less than one seconds

Just under 10 billion electric motors are manufactured each year. This is expected to grow to 12 billion by 2018.

In 2005, an Australian man wearing a nylon jacket and wool shirt built up 40,000 volts of static electricity, resulting in burned carpets, melted plastic, and a massive evacuation.

Just 1/3 of the energy in burning coal reaches the consumer as electricity.

Compiled by team Current Times

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The first electric motor capable of turning machinery was invented by the

element Selenium conducts electricity only when a light is shined on it, in

A bolt of lightning can measure up to three million (3,000,000) volts, and it

re manufactured each year. This is

In 2005, an Australian man wearing a nylon jacket and wool shirt built up 40,000 volts of static electricity, resulting in burned carpets, melted plastic,

Just 1/3 of the energy in burning coal reaches the consumer as electricity.

Compiled by team Current Times

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