paper

Inun

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This pduring dsystem pwind turconsistinresults ar

Keyword

1. Due to lithermal egrowing electric penergy. Aturbines transient voltage rDFIG ba[3]. Fig (

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act-

paper presentdifferent typeprovides betterbine system

ng of DFIG bre shown wit

dsdoubly fed

INTROD

mited resourcenergy generarenewable en

power grids, eA novel two-l[1]. A high current contr

ride through Lased wind turb(1) shows a gl

ormanon GeFaulty

ts the perfors of grid fauler power deli

m during diffbased WT syth the model o

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DUCTION

ces for generation, the worlnergy sourcesenergy storageayer constantpenetration o

rol (FFTCC) sLVRT capabilbines is used lobal wind po

nce Aneneraty and

1. M.tech

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mance of Dolt. The doublyivery toward

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enerator (DFIG

tion through td is running to

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of wind powescheme for rotlity [2]. An ato enhance thwer cumulativ

nalysitor Ba

d RLCRekha ParasStudent Elect

D University Lel Nagar Exte

9, Indira Nagaraprasharg@gm

2. Shashikanecturer ElectriUniversity LuPlot No. 132

hhota Lakhanppur Nagar 20hikant52@gma

oubly Fed Indy fed inductio

ds the demandconditions, va

been verifieed wind energ

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thermal energowards the ren world. .Withl be required rol scheme iser requires retor side conve

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duction Geneon generatord. The designarious load cd using MAgy generation

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gy and the envnewable energh the increasito dynamical

used for a weliable wind erter (RSC) otrol strategy fpability accordata up to 2014

DoublyWind d Con

erator based (DFIG) base

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vironmental prgy. Wind enerng penetratiolly match the ind farm equienergy generf a DFIG is u

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Rekha Parashar et al. / International Journal of Engineering Science and Technology (IJEST)

ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 62

Wind turvariable by the geachieve turbines mechanic

Out of thpower elcapacitor

2. WIND

Wind turturbine ethe kineti

Pair = 0.

Where pressure)ideally at

Althoughis reduce

Cp = Pw

Pwind tu

Maximumof the pow

3. The doubindustry. by externsystem isthe rotor power raof the geHoweverpower caside convfrom the The powprovide lDFIG wi

rbine can alsospeed wind tuear ratio, the gmaximum enare more advacal stresses.

hese electric lectronic convr banks as in th

D TURBINE

rbines producextracts kineticic energy of th

.5 1AV (1) is the pow

), A is the swt infinite dista

h the equationd by the powe

wind turbine / P

urbine= 0.5 Cm value of Cp wer from an a

DOUBLY FE

bly fed inducThe DFIG is

nal devices tos shown in figconnection to

ating for the Denerator deliver, the power an be delivereverters (GSCswind than a

er losses in thleading or lagind energy sys

o be classifieurbines.Fixed grid frequencynergy conversantageous due

Fig (2) Classific

generators, Dverters to genhe case of SC

ce electricity c energy fromhe flowing air

wer containedwept area in (sance from the r

n (1) gives theer coefficient,

Pair(2)

CpAV (3) is defined by

air stream. In r

ED INDUCT

ction generato essentially a o achieve varg .(3). The stao the grid is d

DFIG is normaers power fromflow in the r

ed from the ros) . with variafixed speed

he converters agging reactive stem one of th

WINGEN

Fig (1) Global w

d into two tyspeed wind tu

y and the numsion efficiencye to its high e

cation of common

DFIG is more nerate or abso

CIG.

by using the m the swept arr mass per uni

d in wind (in wsquare meter)rotor (in mete

power availaC

the Betz limireality, wind t

ION GENER

or (DFIG)winwound rotor

riable speed otor of the gendone through ally in the ranm the wind turotor circuit isotor to the griable speed opd WECS of thare also lowerpower to the

he preferred ch

ND TURBINE NERATORS

wind power cumu

ypes on the burbines rotate

mber of poles oy over a wid

energy conver

nly used electric

preferable borb reactive p

power of therea of the bladit time.

watts) , is th), and is ter per second)

able in the win

it, which stateturbine rotors

RATOR

nd energy sysinduction gen

operation. A tnerator is conn

power convernge of a few hurbine to the gs bi-directionid and vice veperation, a DFhe same capacr, leading to ime grid withot ahoices in the w

INDUCTION GENERATOR

SYNCHRONUS GENERAOR

ulative capacity

basis of their e at almost a cof the generatde range of wsion efficienc

generators in larg

ecause in DFpower , thus

e wind to drides. The powe

he air densitythe wind velo.

nd, the power

s that a turbinhave maximu

stem is widelnerator in whictypical block nected to the grters , harmon

hundred kilowgrid and, therenal , dependinersa through rFIG wind enercity when the mproved overaadditional devwind energy m

DOUBLY FINDUCTIO

GENERAT

SQUIRREL CINDUCTIO

GENERAT

WOUND ROGENERAT

PERMANEMAGNE

GENERAT

speed of rotaconstant speedtor. Variable swind speeds. y, improved p

ge wind turbines

FIG technologeliminating t

ive an electricer contained i

y (1.225 kg/m3ocity without r

transferred to

ne can never exum Cp values

y accepted inch the rotor cidiagram of t

grid through nic filters, andatts to several

efore the poweng on the operotor side convrgy system cawind speed i

all efficiecy. Ivices . These fmarket.

FED ON

TOR

CAGE ON

TOR

OTOR TOR

ENT T

TOR

ation: Fixed-sd, which is despeed wind tu

Variable spepower quality

gy, it is the athe need for

cal generatorin the wind is

m3 at 15C anrotor interfere

o the wind tur

xtract more thin the range 2

n todays winircuit can be cthe DFIG wina transformer

d the transforml megawatts. Ter flow is uniderating conditnverter (RSCs)an harvest mois beow its raIn addition , syfeatures have

speed and etermined urbine can eed wind

y, reduced

ability for installing

. A wind given by

nd normal ence, i.e.,

rbine rotor

han 59.3% 25-45%.

nd energy controlled nd energy r, whereas mer . The The stator diretional. tions. The ) and grid

ore energy ted value. ystem can made the


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 63

4. MAT

A 9 MW power to

Results:-4.1

4.2

TLAB SIMUL

W wind farm coa 120 kV grid

- Reactive power

Active power w

Fig (3) simp

LINK MODE

onsisting of sixd through a 30

Fig. (4) M

r waveform

waveform

plified block diag

EL OF DFIG

x 1.5 MW win0 km, 25 kV f

Matlab Simulink M

gram for DFIG wi

BASED WIN

nd turbines cofeeder.

Model of DFIG B

ind energy conve

ND TURBINE

onnected to a 2

Based Wind Turbi

ersion system

E SYSTEM

25 kV distribu

ine System

ution system eexports


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 64

4.3

Iabc_B25 (

4.4

Vabc_B25

Current wav

(Pu)

Voltage wavefo

(Pu)

veform Iabc_B57

orm Vabc_B575(

75(pu)

(pu)


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 65

5.MATL

Results:-

5.1

LAB SIMULI

-

Line to groun

INK MODEL

Fig(5) M

nd fault

L OF DFIG W

Matlab simulink

WITH APPLI

model of DFIG w

IED FAULT

with applied fault

ANALYSIS

t analysis


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 66

5.2 Doub

5.3 line t

ble line to gro

to line fault

ound fault


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 67

6. SIMU

Results:-

ULINK MODE

-

EL OF DFIGG WITH PARRALLEL RLC LOAD


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 68

7. SIMU

Results:-

8. CONC

High penensure theven conbasic winan electri

ULINK MOD

-

CLUSION

netration of Whe security of ntribute to supnd turbine topical point of v

DEL OF DFIG

Wind Turbineselectricity sup

pport the gridpologies and cview. Power

G WITH FAU

s imposes signpply with sub

d operation uncontrol strategelectronic dev

ULTY AND L

nificant challebstantial wind nder the faultgies, was follovices are used

LOAD COND

enges to the spower, the W

ty conditions.Aowed by the std to provide w

DITIONS

safe operationWind Turbines

A short introdtate of the art wind power in

n of power sys must ride thrduction, preseof wind turbi

nstallations w

stems. To rough and enting the ines, from

with power


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 69

system control capabilities and to improve their effect on power system stability.The steady-state equivalent circuit for the DFIG was introduced and essential behaviour of DFIG under grid faults and without grid faults along with RLC load was analysed in this paper. All this work has been done with the help of the simulation program using MATLAB and its inbuilt components provided in Simulink library.

REFERENCES [1] Liyan Qu, Wei Qiao, Constant Power Control of DFIG Wind Turbines with Super capacitor Energy Storage, IEEE Transactions on

Industry Applications, Vol.47, No.1, January/February 2011. [2] Jiaqi Liang, Wei Qiao, Ronald G. Harley, Feed-Forward Transient Current Control for Low-Voltage Ride- Through Enhancement of

DFIG Wind Turbines, IEEE Transactions on Energy Conversion, Vol.25, No.3, September 2010. [3] Lihui Yang, Zhao Xu, Jacob Ostergaard, Zhao Yang Dong, Kit Po Wong, Advanced Control Strategy Of DFIG Wind Turbines for

Power System Fault Ride Through, IEEE Transactions On Power System, Vol.27, No.2, May 2012. [4] Shuhui Li, Timothy A. Haskew, Keith A. Williams, Richard P. Swatloski, Control of DFIG Wind Turbine with Direct-Current Vector

Control Configuration, IEEE Transactions on Sustainable Energy, Vol.3, No.1, January 2012. [5] S. Muller, M. Deicke, and R.W. De Doncker, Doubly Fed Induction Generator Systems For Wind Turbines, IEEE Industry

Applications Magazine, Vol.8, No.3, 26-33, 2002.


ISSN : 0975-5462 Vol. 7 No.2 Feb 2015 70

Performance Analysis of Doubly Fed Induction Generator Based Wind turbine under Faulty and RLC Load ConditionsAbstractKeywords1. INTRODUCTION2. WIND TURBINE3. DOUBLY FED INDUCTION GENERATOR4. MATLAB SIMULINK MODEL OF DFIG BASED WIND TURBINE SYSTEM5.MATLAB SIMULINK MODEL OF DFIG WITH APPLIED FAULT ANALYSIS6. SIMULINK MODEL OF DFIG WITH PARALLEL RLC LOAD7. SIMULINK MODEL OF DFIG WITH FAULTY AND LOAD CONDITIONS8. CONCLUSIONREFERENCES

paper

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