Speed Control Of PMSM motor

8/12/2019 Speed Control Of PMSM motor

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Digital Implementation of Speed regulation for PMSM

using GA

Content

1. Abstract

2. Introduction

3. Proposed system

4. Various control techniques

5. Literature surey

!. "o#t$are description

%. &loc' dia(ram

). Adanta(es

*. +e#erences


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ABSTRACT:

,i(ital control technolo(y has rapidly been deeloped #or po$er electronics

and electrical dries- and it has been the impetus to the $idespread use o# a

permanent ma(net synchronous motor in many industrial applications such

as chip mount machines- semiconductor production machines- hi(h

resolution computeri/ed numerically controlled machine tools- robotics- and

hard dis' dries. A P0"0 has lo$ noise- lo$ inertia- hi(h torquetocurrent

ratio- hi(h e#ciency- robustness- and lo$ maintenance cost. e propose a

(enetic al(orithm A based speed re(ulator system #or a permanent

ma(net synchronous motor. &y usin( the A the motor acceleration

obserer as $ell as a speed re(ulator is desi(ned. In terms o# linear matri6

inequalities- su#cient conditions #or the e6istence o# the re(ulator and

obserer are deried.


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INTRODUCTION

! G"N"RA#

7he deelopment and aailability o# ery hi(hener(y density permanentma(net materials has contributed to an increased use o# the permanent ma(net

synchronous motor P0"0 in hi(h per#ormance applications. 8i(hspeed

electric machines are o# interest as direct dries #or hi(hspeed millin(

machines- compressors and pumps- yieldin( a hi(h output po$er at rather small

machine dimensions. 7he hi(hspeed P0"0 permanent ma(net "ynchronous

motor $ith sinusoidal currents is the best choice #or hi(hspeed operation

because o# the hi(h e##iciency- lo$ torque ripple- lo$ noise- and e6cellent

control per#ormance. 7he P0"0 eliminates rotational co((in( torque due to

permanent ma(net pre#erred positions- decreases core loss and thus increases

e##iciency- proider9 e6cellent torqueto olume and po$erto olume ratios-

and has a linear current ersus torque relation. In the P0"0- in order to

(enerate smooth torque and thus reduce noise and ibration- the current

ae#orm should match the shape o# the motor electromotie #orce em#.


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!$ OB%"CTI&"

7he ob:ectie o# the pro:ect is to drie the permanent ma(net

synchronous motor by three phase sinusoidal stator currents.

7he trape/oidal current drie systems are popular because o# the "implicity ;#

their control circuits but su##er #rom a torque ripple problem durin(

commutation. 7rape/oidal commutation is inadequate to proide smooth and

precise motor control o# P0"0- particularly at lo$ speeds. "inusoidal

commutation soles this problem. In order to (enerate smooth "inusoidal

current $ae#orm- hi(h resolution rotor position #eedbac' is required. 7his hi(h

resolution rotor position is typically proided by an Incremental encoder or

resoler attached to the sha#t o# the motor.

8all sensors$hich are installed in the stator by themotor manu#acturer

are o#ten used. 8all sensors require little olume in comparison to the resoler

or


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!' #IT"RATUR" SUR&"(

1.Appli)ation Note *+,-*./No01$--*2 from N"C ele)troni)spresents a 3

phase permanent ma(net synchronous motor control so#t$are deeloped #or

>


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motor theory. Part 7$o relates brushless commutation usin( a alil 0otion

Controller. Part 7hree includes some real$orld cases o# brushless motor

e6amples- includin( tips and tric's to ma6imi/e the per#ormance o# a brushless

application.

4. Sali3 aris o;tur64/D"C1$--


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position in#ormation $ith the resolution o# *= electrical de(rees. 7he

conersion and compensation o# the rotor position si(nal based on Phase

Loc'ed Loop PLL are analy/ed.

*! Au1Ru4 5!= Oi6onomou4 N. presents Controlled ac dries $ithout speed

sensors o# the motor sha#t are in increasin( demand. V


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SO,TAR" US"D

0A7LA& "I0DLI>E

enetic Al(orithm Implementation in 0A7LA&

"@ISTING S(ST"M:

ADAPTI&" CONTRO# SC5"M" ,OR MOTORS

7he ?ollo$in( are the Adaptie Control "cheme used #or "peed +e(ulation

! Model Referen)ing Adapti0e Control /MRAC2

0+AC is a controller that can modi#y its behaiour in response to the chan(es

in dynamics o# the processes and the disturbances actin( on the process. "lidin(

0ode Control techniques

$! Self1Tuning Regulator /STR2

7he (ain schedulin( and 0+A" are called direct methods- because the

ad:ustment rule tells directly ho$ the controller parameters should be updated.

A di##erence scheme is obtained i# the estimates o# the process parameters are

updated and the controller parameters are obtained #rom the solution o# a

desi(n problem usin( the estimated parameters.

'! Gain s)3eduling S)3eme /GS2

ain schedulin( is an adaptie control strate(y- $here the (ain o# the system is

determined and based on its alue the controller parameters are chan(ed. 7his

approach is called (ain schedulin( because the scheme $as ori(inally used to

measure the (ain and then chan(e- that is- schedule the controller to compensate

#or chan(es in the process (ain.


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Draa)6s of t3e S8stem

It is an openloop adaptation scheme- $ith no real learnin( or intelli(ence

7he desi(n required #or its implementation is enormous

It is 8ard to Implement #or Certain 0otors

PROPOS"D S(ST"M:

Digital Implementation of Speed regulation for PMSM using GA

7he proposed A speed controller is robust because it does not depend on load

torque ariations. It is also proed that the speed error o# the closedloop system

coner(es to /ero. Via simulation and e6perimental results- it $as clearly

proen that the proposed method (ies ery remar'able speed control

per#ormance under model parameter and load torque ariations.

7he A has #ound application in the area o# the automatic tunin( process #or

conentional and intelli(ent controllers. "ame research has been conducted

usin( (enetic al(orithms to help online or o## line control systems. It has

primarily been utili/ed as an o##line technique #or per#ormin( a directed search

#or the optimal solution to a problem. In this paper- the A is used online in

realtime controller implementation to adaptiely search throu(h a population o#

Controllers and determine the member most #it to be implemented oer a (ien

samplin( period

Ad0antages of GA ased Speed Control

Concept o# ?le6ibility and


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"upports multiob:ectie optimi/ation


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7he speed #eedbac' is (ien to the controller i.e is compared $ith the

required speed depends on the di##erence alue P0 (atin( si(nals are

(enerated.

MOD"#ING O, PMSM DRI&" S(ST"M

7he con#i(uration o# P0"0 drie system is (ien in ?i(. 7he drie system arecomposed o# speed controller enetic PI or conentional PI- a current

re(ulator- a hysteresis band current controller- a three phase P0 inerter and

a position encoder

B#OC> DIAGRAM


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F is rotor position- r G actual speed and H - H - Ha b c i i i re#erence phase

currents. G e speed error is di##erence bet$een H rG re#erence speed and r G

actual speed. Dsin( G e speed error- the speed controller (eneratesI H called as

re#erence current or control current.


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7he synthesis o# a control system includes both the controller selection and the

ad:ustment o# its parameters. In some cases- the type o# controller mi(ht be

conentional PI. In this case- the tunin( problem must be satis#actorily soled.7o improe limitations o# conentional PI controller especially $hen applied to

hi(h order systems- $e propose enetic PI controller #or the &,C0. 7he

structures o# the proposed controller $ere motiated by the problems o#

conentional PI controllers that they (enerally (ie ineitable oershoot $hen

one tries to reduce rise time o# response especially $hen a system o# order

hi(her than one is under consideration. "ince the undesirable characteristics o#

the conentional PI controller are caused by inte(ratin( operation o# the

controller- een thou(h the inte(rator itsel# is introduced to oercome steady

state error in response- $e propose enetic PI controller that clear out

inte(rated quantities accordin( to situation. 7he enetic PI (ies reduced rise

time as $ell as small oershoot. 7his initial tunin( has been tested #or the

system and a qualitatie tunin( has also been established.

Need ,or Geneti) Algorit3m

7his paper inesti(ates the use o# (enetic al(orithm A #or tunin( the (ains o#

the conentional PI. "uch problems are ery hard in (eneral- and A o##ers a

use#ul and success#ul alternatie to e6istin( techniques. 7hus enetic Al(orithm

has made possible the establishment o# intelli(ent control. A is a (roup o#


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do not require that #itness is a per#ect measure o# quality9 they can to some

modest e6tent tolerate a #itness measure in $hich the #itter o# some pairs o#

candidates is also the poorer as a solution.

$! Sele)tion!

"elect pairs o# candidate solutions #rom the current (eneration to be used #or

breedin(. 7his may be done entirely randomly- or stochastically based on #itness

or in other $ays but usually based on #itness- such that #itter indiiduals hae

more chance o# bein( chosen.

'! Breeding!

Produce ne$ indiiduals by usin( (enetic operators on the indiiduals chosen in

the selection step. 7here are t$o main 'inds o# operatorsK

Recombination:A ne$ indiidual is produced by recombinin( #eatures o# a

pair o# parent solutions.

MutationK A ne$ indiidual is produced by sli(htly alterin( an e6istin( one

7he idea o# recombination is that use#ul components o# the members o# a

breedin( pair may combine success#ully to produce an indiidual better than

both parents9 i# the o## sprin( is poor it $ill :ust hae lo$er chance o# selection

later on. In any eent- #eatures o# the parents appear in di##erent combinations in

the o##sprin(. 0utation- on the other hand- seres to allo$ local hillclimbin(-

as $ell introduce ariation $hich cannot be introduced by recombination.

.! Population update


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7he set is altered- typically by choosin( to remoe some or all o# the indiiduals

in the e6istin( (eneration usually be(innin( $ith the least #it and replacin(

these $ith indiiduals produced in the breedin( step. 7he ne$ population thus

Produced becomes the current (eneration.

7he A is an optimi/ation routine based on the principles o# ,ar$inian 7heory

and natural (enetics. "ince the inception o# the A concept by 8olland in 1*%5

it has been use#ul in solin( a $ide ariety o# problem. In the use o# the A-

there are t$o important aspects9

Chromosome codin(

,e#inin( the ealuation criteria

7he A per#orms a parallel search o# a parameter space by usin( (enetic

operators to manipulate a set o# encoded chromosome $hich represents system

parameters. 7he operation o# the A chan(es sli(htly dependin( on the base o#

the numbers to apply the (enetic operators crossover, mutation, reproduction,elitism.

In the enetic PI controller tunin(- each chromosome has a (enes as a possible

proportional and inte(ral (ain alues. Chromosome #itness is eoled durin(

eolution usin( the inte(ral $ith respect to time o# the absolute speed error

International JII.

T5" G"N"TIC A#GORIT5M ,OR T5" PMSM

7he enetic PI controller #or the P0"0 dries is sho$n in ?i( the A uses the

principles o# eolution and (enetics to select and adapt the controller parameters

Kp and Ki. 7he controller parameters are coded by decimal numbers in

chromosome. 7he candidate controllers o# the enetic PI controller are de#ined


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as members o# the population. ,urin( time step- each member o# the population

is ealuated on ho$ $ell it minimi/es the I7A


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( Produce the ne6t (eneration usin( A operators and let t3 t/ (o to step d

h 7he ma6imally #it $ibecomes $* and send the chan(e o# control action

i*(k) to control the drie. here i* ( k ) is the in#erred chan(e o# re#erence

current by the controller

At the kth samplin( time and de#ined as

i* ( k ) M i* ( k O 1)Oi( k ) 11

here- i* ( k O 1) is the preious re#erence current

GA Based PI for PMSM Dri0es


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COMPON"NTS US"D

! P"RMAN"NT MAGN"T S(NC5RONOUS MOTOR

$! CONSTRUCTION

A permanent ma(net synchronous motor P0"0 is a motor that uses

permanent ma(nets to produce the air (ap ma(netic #ield rather than usin(

electroma(nets. 7hese motors hae si(ni#icant adanta(es- attractin( the interest

o# researchers and industry #or use in many Applications.

$!! STATOR

?i(.2.1stator


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7he stator dia(ram o# P0"0 is sho$n in the aboe #i(ure. 7hree $indin(s A-

&- C are placed in 12= de(ree electrically in the stator. 7hree 8all orth > and "outh " poles. &ased on the required

ma(netic #ield density in the rotor- the proper ma(netic material is chosen to

ma'e the rotor. ?errite ma(nets are traditionally used to ma'e permanent

ma(nets. As the technolo(y adances- rare earth alloy ma(nets are (ainin(

popularity. 7he #errite ma(nets are less e6pensie but they hae the

disadanta(e o# lo$ #lu6 density #or a (ien olume. In contrast- the alloy

material has hi(h ma(netic density per olume and enables the rotor to

compress #urther #or the same torque. Also- these alloy ma(nets improe the

si/eto$ei(ht ratio and (ie hi(her torque #or the same si/e motor usin( #errite


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ma(nets. >eodymium >d- "amarium Cobalt "mCo and the alloy o#

>eodymium- ?errite and &oron >d?e& are some e6amples o# rare earth alloy

ma(nets. Continuous research is (oin( on to improe the #lu6 density to

compress the rotor #urther. Aboe ?i(.2.2 sho$s the cross sections o# di##erent

arran(ements o# ma(nets in a rotor. +ecent aailability o# hi(h ener(ydensity

permanent ma(net P0 materials at competitie prices- continuin(

brea'throu(hs and reduction in cost o# po$er#ul #ast di(ital si(nal processors

,"Ps and microcontrollers combined $ith the remar'able adances in

semiconductor s$itches and modern control technolo(ies hae opened up ne$

possibilities #or permanent ma(net brushless motor dries in order to meet

competitie $orld$ide mar'et demands.

$!$ ,"ATUR"S O, PMSM

1. 8i(h e##iciency

2. 8i(h torque to inertia ratio

3. 8i(h torque to inertia ratio

4. 8i(h torque to olume ratio

5. 8i(h air (ap #lu6 density

!. 8i(h po$er #actor

%. 8i(h acceleration and deceleration rates

). Lo$er maintenance cost

*. "implicity and ru((edness

1=. Compact structure

11. Linear response in the e##ectie input olta(e


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Permanent ma(nets that proide a constant ma(netic #ield on the rotor

#ollo$ the rotatin( stator ma(netic #ield at a constant speed. 7his speed is

dependent on the applied #requency and pole number o# the motor. "ince the

s$itchin( #requency is deried #rom the rotor- the motor cannot lose its

synchronism. 7he current is al$ays s$itched be#ore the permanent ma(nets

catch up9 there#ore the speed o# the motor is directly proportional to the current

s$itchin( rate. +ecent deelopments in the area o# semiconductor s$itches and

coste##ectie ,"Ps and microprocessors hae opened a ne$ era #or the

ad:ustable speed motor dries. "uch adances in the motor related subareas

hae helped the #ield o# motor dries by replacin( complicated hard$are

structures $ith so#t$are based control al(orithms. 7he result is considerable

improement in cost $hile proidin( better per#ormance o# the oerall drie

system. 7he synchronous motor is a constantspeed motor $hich al$ays rotates

at synchronous speed dependin( on the #requency o# the supply olta(e and the

number o# poles. 7he permanent ma(net synchronous motor is a 'ind o#

synchronous motor i# its electrically e6cited #ield $indin(s are replaced by

permanent ma(nets $hich proide a constant rotor ma(netic #ield.

$!' AD&ANTAG" O, PMSM O&"R CON&"NTIONA#

S(NC5RONOUS

MOTOR

1. o rotor copper losses (enerated in the #ield $indin(s o# $ound#ield

synchronous motor.

3. 8i(her e##iciency because o# #e$er losses.


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4. "ince there is no circuit creatin( heat on the rotor- coolin( o# the motor :ust

throu(h the stator in $hich the copper and iron loses are obsered is more easily

achieed. +eduction o# machine si/e because o# hi(h e##iciency

5. ,i##erent si/e and di##erent arran(ements o# permanent ma(nets on the rotor

$ill lead to hae $ide ariety o# machine characteristics.

$!. ROTOR POSITION "STIMATION M"T5ODS

7he stator $indin(s are ener(i/ed sequentially by the P0 inerter $ith

the re#erence o# rotor position- It is important to 'no$ the rotor position in order

to understand $hich $indin( $ill be ener(i/ed #ollo$in( the ener(i/in(

sequence. 7$o ma:or methods are used to estimate the rotor position- one is by

usin( the sensors li'e 1.8all e##ect sensor- 2.


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o# the conductor. 7he presence o# this measurable transerse olta(e is called

the 8all


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?i(.2.5 ;ptical Interrupter ?i(.2.! "lotted ,isc

An encoder is a rotary deice that outputs di(ital pulses in

response to incremental an(ular motion. C

systems to accurately position the J table. A rotary encoder typically has 2

outputs. 7hese outputs emit si(nals that are *= de(rees out o# phase $ith respect

to each other. 7he output si(nals may be square $ae or sine $ae. "ine $ae

outputs are typically used in hi(her resolution encoder applications. ;ptical

Interrupter and "lotted ,isc are sho$n in?i(2.5 and2.5 respectiely

T5R"" P5AS" IN&"RT"R


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7hreephaseinerters are used #or ariable#requency drieapplications and #or

hi(h po$er applications such as 8V,Cpo$er transmission. A basic three

phase inerter consists o# three sin(lephase inerter s$itches each connected to

one o# the three load terminals. ?or the most basic control scheme- the operation

o# the three s$itches is coordinated so that one s$itch operates at each !=

de(ree point o# the #undamental output $ae#orm. 7his creates a linetoline

output $ae#orm that has si6 steps. 7he si6step $ae#orm has a /eroolta(e

step bet$een the positie and ne(atie sections o# the square$ae such that the

harmonics that are multiples o# three are eliminated as described aboe. hen

carrierbased P0 techniques are applied to si6step $ae#orms- the basic

oerall shape- or envelope- o# the $ae#orm is retained so that the 3rd harmonic

and its multiples are cancelled.

7o construct inerters $ith hi(her po$er ratin(s- t$o si6step threephase

inerters can be connected in parallel #or a hi(her current ratin( or in series #or

a hi(her olta(e ratin(. In either case- the output $ae#orms are phase shi#ted to

obtain a 12step $ae#orm. I# additional inerters are combined- an 1)step

inerter is obtained $ith three inerters etc. Althou(h inerters are usually

combined #or the purpose o# achiein( increased olta(e or current ratin(s- the

quality o# the $ae#orm is improed as $ell.
http://en.wikipedia.org/wiki/Three-phase_electric_powerhttp://en.wikipedia.org/wiki/Variable-frequency_drivehttp://en.wikipedia.org/wiki/High-voltage_direct_currenthttp://en.wikipedia.org/wiki/Three-phase_electric_powerhttp://en.wikipedia.org/wiki/Variable-frequency_drivehttp://en.wikipedia.org/wiki/High-voltage_direct_current


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Rectifier and inverter pulse numbers

+ecti#ier circuits are o#ten classi#ied by the number o# current pulses that #lo$

to the ,C side o# the recti#ier per cycle o# AC input olta(e. A sin(lephase

hal#$ae recti#ieris a onepulse circuit and a sin(lephase #ull$ae recti#ieris

a t$opulse circuit. A threephase hal#$ae recti#ier is a threepulse circuit and

a threephase #ull$ae recti#ier is a si6pulse circuit.ith threephase recti#iers- t$o or more recti#iers are sometimes connected in

series or parallel to obtain hi(her olta(e or current ratin(s. 7he recti#ier inputs

are supplied #rom special trans#ormers that proide phase shi#ted outputs. 7his

has the e##ect o# phase multiplication. "i6 phases are obtained #rom t$o

trans#ormers- t$ele phases #rom three trans#ormers and so on. 7he associated

recti#ier circuits are 12pulse recti#iers- 1)pulse recti#iers etc.

hen controlled recti#ier circuits are operated in the inersion mode- they

$ould be classi#ied by pulse number also. +ecti#ier circuits that hae a hi(her

pulse number hae reduced harmonic content in the AC input current and

reduced ripple in the ,C output olta(e. In the inersion mode- circuits that

hae a hi(her pulse number hae lo$er harmonic content in the AC output

olta(e $ae#orm.
http://en.wikipedia.org/wiki/Rectifier#Half-wave_rectificationhttp://en.wikipedia.org/wiki/Rectifier#Half-wave_rectificationhttp://en.wikipedia.org/wiki/Rectifier#Full-wave_rectificationhttp://en.wikipedia.org/wiki/Rectifier#Half-wave_rectificationhttp://en.wikipedia.org/wiki/Rectifier#Half-wave_rectificationhttp://en.wikipedia.org/wiki/Rectifier#Full-wave_rectification


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PI CONTRO##"R 1 Proportional F Integral Controllers

Proportional O Inte(ral PI controllers $ere deeloped because o# the desirable

property that systems $ith open loop trans#er #unctions o# type 1 or aboe hae

/ero steady state error $ith respect to a step input.

7unin( PI Controllers eneral approach to tunin(K

1. Initially hae no inte(ral (ain 7I lar(e

2. Increase EP until (et satis#actory response

3. "tart to add in inte(ral decreasin( 7I until the steady state error is remoed

in satis#actory time may need to reduce EP i# the combination becomes

oscillatory


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Anti1indup in I F PI )ontrollers

Dnder some operatin( conditions nonlinearity in the plant or controller can

stop an Inte(ral controller #rom remoin( the steady state error. I# the Inte(rator

output is not limited- then durin( this time the total o# the inte(rated summed

error QEIetdtR $ill continue to build. ;nce the restrictions are #inally

remoed- problems can arise because this built up Sener(yT must be remoed

be#ore the inte(ral control can act normallyU this can ta'e a lon( time. 7o

aoid this- anti$indup circuits are added that place limits on the inte(ral

total. 7hese limits are usually placed on the summed output o# the PI

controller as $ell

MOTOR DRI&"R


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7he 0otor ,rier is the Inte(rated Part $ith 0otor Po$er and Control

Components. 7he ,rier Controls the 0otor ,rie accordin( to the input

command #rom 0otor Controller and po$er Circuit. In the aboe dia(ram

,+V)3=1 is an >e$ desi(ns o# po$er electronics systems are the norm due to ne$

applications and lac' o# standardi/ation in speci#ications is because o#

aryin( customer demands. Accurate simulation is necessary to minimi/e

costly repetitions o# desi(ns and bread boardin( and hence reduce the oerall

cost and the concepttoproduction time.

7here are many bene#its o# simulation in the desi(n process- some

o# them are listed belo$ hereK


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"imulation is $ell suited #or educational purpose. It is an e##icient $ay #or

desi(ner to Learn ho$ a circuit and its control $or'in(.

It is normally much cheaper to do a thorou(h analysis than to build

the actual circuit in $hich component stresses are measured. A

simulation can discoer the possible problems and determine optimal

parameters- increasin( the possibility o# (ettin( the prototype

>e$ circuit concepts and parameter ariation includin( tolerances on

components are easily tested. Chan(es in the circuit topolo(y are

implemented at no cost. 7here is no need #or components to be aailableon short notice.

"imulated $ae#orms at di##erent places in the circuit are easily monitored

$ithout the hindrance o# measurement noise. As s$itchin( #requencies

increases- the problem o# laboratory measurements becomes increasin(ly

di##icult. 7hus- simulations may become more accurate than measurement

,estructie tests that cannot be done in the lab- either because o# sa#ety or

because o# costs inoled- can easily be simulated. +esponse to #aults and

abnormal conditions can also be thorou(hly analy/ed.

7he so#t$are tool used #or the simulation studies is 0A7LA&@"I0DLI>E.

0A7LA& is a hi(h per#ormance lan(ua(e #or technical computin(. It

inte(rates computation- isuali/ation- and pro(rammin( in an easy to use

enironment $here problems and solutions are e6pressed in #amiliar

mathematical notation. 7ypical uses include 0ath and computation al(orithm

deelopment ,ata acquisition modellin( simulation and prototypin( data


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analysis e6ploration and isuali/ation scienti#ic and en(ineerin( (raphics

application deelopment includin( (raphical user inter#ace buildin(.

0A7LA& is an interactie system $hose basic data element is an

array that does not require dimensionin(. 7his allo$s you to sole many

technical computin( problems- especially those $ith matri6 and ector

#ormulations- in a #raction o# the time it $ould ta'e to $rite a pro(ram in a

scalar noninteractie lan(ua(e such as C or ?;+7+A>. 0A7LA& has

eoled oer a period o# years $ith input #rom the users. In industry- 0A7LA&

is the tool o# choice #or hi(hproductiity research- deelopment and analysis.

0A7LA& #eatures a #amily o# addon applicationspeci#ic solutions called

toolbo6es. Very important to most users o# 0A7LA&- toolbo6es allo$ you to

learn and apply speciali/ed technolo(y. 7oolbo6es are comprehensie

collections o# 0A7LA& #unctions that e6tend the 0A7LA& enironment to

sole particular classes o# problems. Areas in $hich toolbo6es are aailable

include si(nal processin(- control systems- neural net$or's- #u//y lo(ic-

$aelets- simulation and many others. 7he 0A7LA& ersion used is %.).=.

"imPo$er "ystems toolbo6 is mainly used.

simulatin( basic electrical circuits and detailed electrical po$er systems. 7hese

tools let one model the (eneration- transmission- distribution- and consumption

o# electrical po$er- as $ell as its conersion into mechanical po$er. "im Po$er

"ystems is $ell suited to the deelopment o# comple6- sel#contained po$er

systems- such as those in automobiles- aircra#t- manu#acturin( plants- and po$er

utility applications.


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"im Po$er "ystems operates in the "imulin' enironment. 7he

libraries contain models o# typical po$er equipment such as trans#ormers- lines-

machines- and po$er electronics. 7he "im Po$er "ystems main library- po$er

lib- or(ani/es its bloc's into libraries accordin( to their behaiour. 7he po$er

lib library $indo$ displays the bloc' library icons and names. ,oubleclic' a

library icon to open the library and access the bloc's. 7he main "im Po$er

"ystems po$er lib library $indo$ also contains the Po$er (ui bloc' that opens

a (raphical user inter#ace #or the steadystate analysis o# electrical circuits.

"teps inoled in the simulation are as #ollo$s-

1. "tart 0A7LA&- by double clic'in( on the 0A7LA& icon

2. In the 0A7LA&- clic' the "imulin' icon

3. "elect >e$ #rom the ?ilemenu $hich creates a ne$ $or'space $here the

&loc' dia(ram o# the system $ill be created

4. Connect all the components as per the circuit dia(ram usin( the "imulin'

bro$ser

5. "elect the simulation parameters and set the start time and stop time

!. "tart the simulation and ie$ the $ae#orms at the respectie scope

"7A+7I> 0A7LA&

;n indo$s plat#orms- start 0A7LA& by doubleclic'in( the

0A7LA& shortcut icon on your indo$s des'top. ;n D>IJ plat#orms- start

0A7LA& by typin( matlab at the operatin( system prompt. ou can customi/e

0A7LA& startup. ?or e6ample- you can chan(e the directory in $hich

0A7LA& starts or automatically e6ecute 0A7LA& statements in a script #ile

named startup menu.


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0A7LA& ,


35/38


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Ad0antage of GA ased Speed Control

,i(ital speed control

It response sudden chan(es in load and it commanded speed

V"I method is used

Pro6imity sensor is used

CONC#USIONS

In this paper- a enetic al(orithm based PI speed controller #or P0"0 drie

system is presented. 0athematical model o# a P0"0 #ed by three phase

inerter is reali/ed- enetic PI speed controller #or speed control o# P0"0 are

desi(ned. 7he enetic PI and conentional PI controller are desi(ned and

simulated indiidually and results are (ien. ?rom the simulation results- it is

clear that the desi(ned the enetic PI controller has better speed response than

conentional PI controller


37/38

+


38/38

Induction 0otor ,ries at Very Lo$ and `ero "peeds Dsin( >eural

>et$or' ?lu6 ;bserers-TI222 ransactions on Industrial

2lectronics- ol. 5!- no. )- 2==*.

W15X C. Lascu- I. &oldea- ?. &laab:er(- SA Class o# "peed"ensorless

"lidin(0ode ;bserers #or 8i(hPer#ormance Induction 0otor,ries-TI222 ransactions on Industrial 2lectronics- . 5!@*- 2==*.

W1!X oun("u E$on- Yeon(8um Lee- "an(8o 0oon- &yun(Ei E$on-

Chan(8o Choi- YulEi "eo'- S"tandstill Parameter Identi#ication o#

VectorControlled Induction 0otors Dsin( the ?requency

Characteristics o# +otor &ars-TI222 ransactions on Industr&

0pplications- ol. 45- no. 5- 2==*.

Documents

Speed Control Of PMSM motor