literature presentation - health & performance monitoring using active magnetic bearing

7/17/2019 Literature Presentation - Health & Performance Monitoring Using Active Magnetic Bearing

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1Challenge thefuture

AE4020 Literature Study

Health & Performance Monitoring Using

Active Magnetic Bearing Systems

Abhinav Raj 4182758 Supervisors: Dr Arvin! " Rao #$% Delft& Sreenivas Raghaven!ran #Shell '($&


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Contents1 A)* S+ste, ( Relevan-e

2 A!vantages of using A)*s

. 'rin-iple of operation

4 /bje-tive

5 Re,ote ,onitoring using A)*s0 ault Classi-ation

7 S+ste, ,o!eling approa-hes

8 Cases to test

3 A!!itional Resear-h

1 Deliverables

11$i,eline


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.Challenge thefuture

1. AMB System & Relevance

ntegration of

6 'oer le-troni-s

6 Control S+ste,s 9 ogi-

6 Rotor D+na,i-s

6 le-tro,agneti- $e-hnolog+

6 Co,puting $e-hnolog+


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2. Advantages Of AMBs

Appli-ation

;o ear< noiseless< no lubri-ation< large range of

operational te,peratures< eli,ination of path for -ir-ulating

-urrents

Control

A-tive -ontrol of i,balan-e ( vibration< -an var+ sti=ness

an! !a,ping as re>uire!< ,onitor s+ste, perfor,an-e

'erfor,an-e /perate in -riti-al environ,ents< no lubri-ation relate!

proble,s< eli,inates several -o,ponents fro, s+ste,uations

6 )atab 9 Si,ulin@ Approa-hes

'ure )atab

Ans+s M )atab

)atlab M Si,ulin@

'ure Si,ulin@


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System Modeling Rotor

6 )atri-es fro, ) softares versus fro, papers

)ore a--urate rotor ,o!el< ,ore D/< larger ,atri? siEe #12

? 12&< sloer -o,putation

) ,o!el ,atri? re!u-tion as -o,pare! to si,ple asse,bl+

Cross -oupling beteen A)* s+ste, an! rotor ,ight not be

-apture!

ali!ation -on-erns


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System Modeling Rotor

6Be=-ott Rotor vs Real SiEe!

6 nD/

6 )ass ,atri?

6 Sti=ness ,atri?

6 Da,ping ,atri?

6 "+ros-opi- ,atri? Nhen in )otion


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System Modeling AMB

6 Depth of ,o!eling

6 Coils ;u,ber of turns< resistan-e< in!u-tan-e

6 Crossse-tional area of the ele-tro,agnet in the gap

6 Current supplie!

6 A)* or-e relation per ele-tro,agnet vs per pair vsper s+ste,


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System Modeling Control Logic

6 CentraliEe! vs De-entraliEe! Control

6 oltage -ontrolle! vs Current Controlle!

6 Si,ple vs Co,ple?


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6 'D

'D -ontrol logi- is si,ple an! ,ost i!el+ applie!

t is better to o,it the integral part sin-e it !estabiliEes-ontrol logi- in -ases of su!!en pea@s or !rops

Nh+ then is 'D preferre! over a si,ple 'D -ontrol for a

A)* supporte! rotor ,o!elO

Disa!v oer fre>uen-+ ( higher nonlinear region


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6 ee!ba-@ ineariEation

6 *a-@stepping approa-h

6 ;eural ;etor@ Control

6 uEE+ ogi- Control

6 terative earning Control

6 Auto,ati- earning Control


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.Challenge thefuture


6 nnit+ Close! oop Shaping

6 nnit+ /pen oop Shaping

6 P 'ara,eteriEation

6 )u S+nthesis

6 ADR

6 Sli!ing ,o!e -ontrol


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.1Challenge thefuture


6 'roble,s asso-iate! ith an a!van-e! -ontrol logi-

a ne line

$oo ,u-h -ontrol

DiK-ult to -apture faults

A!aptive nature ,ight s,other the possibilit+ of

@noing faults in the ,a-hine

$o !ete-t faults or have a s+ste, that @eeps running

even hen there are faults


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System Modeling Rotordynamics

6 *o!e 'lots re>uen-+ response of the s+ste,

=e-t of -hanging !a,ping on the s+ste,

6 ,pulse Response

6$ransfer un-tion ?tra-ting transfer fun-tion fro, the state spa-e

,atri-es of the s+ste,


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..Challenge thefuture


6 'oles

6 Qeros

6 ;atural re>uen-+

6 Resonant re>uen-+ Criti-al Spee!s

Stru-tural Resonan-e


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6 Da,ping Ratio

6 DC "ain

6 ;+>uist 'lot

6 igen alues< igen e-tors

6 Ca,pbell Diagra,


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5. Series Of Steps

1 Resear-h various a+s to !evelop a robust ,o!el that-an provi!e a goo! representation of the !+na,i-s of

the s+ste, fro, rotor !+na,i-s point of vie

2 Resear-h on the various failure ,o!e anal+sis for arotor on A)* s+ste,

. "et a goo! overvie of the s+ste, fro, anoperational point of vie to un!erstan! hat

para,eters are -ru-ial in or!er to assess the health of

the s+ste,


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5. Series Of Steps (Contd.)

4 Che-@ for hat !ata is available fro, an A)* s+ste, an!

ho the re>uire! para,eters -an be !erive! fro, the,

Current fo-us here involves e?tra-ting real ti,e thrust

,easure,ents an! vibration values using rotor properties

para,eters -an be e?tra-te! b+ !eveloping a relation ,ap

beteen available an! !esign !ata or thrust bearing< a .a+ relation beteen thrust for-e< -ontrol

-urrent an! gap nee!s to be establishe!

or vibration !ata< a relation ill have to be built beteen -urrent

an! position $he interest here is not the vibration seen ith the

in-rease! -ontrol -urrent but the vibration a,plitu!es of the rotor

hen si,pl+ levitate! but not -ontrolle! $he in-reasing vibrationtren! -an provi!e a goo! i!ea of fouling or rotor !a,age


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5. Series Of Steps (Contd.)

5 *uil! a -ause an! e=e-t ,atri? here the failures are

,at-he! against the para,eter values $his ,atri? illrepresent ho -ertain para,eter values going out ofboun! on the upper or loer li,it -an in!i-ate thein-ipient faults in the s+ste,

0 *uil! a rotor!+na,i- ,o!el to e?plain the or@ing of an

A)* s+ste, along ith -ru-ial plots of orbits< Ca,pbell!iagra, et- $his ,o!el ill be use! to open up the bla-@bo? operation of the A)* s+ste,

7 $est the ,atri? vali!it+ using -ase !ata fro, sites an! the,o!el

8 A!!ing a!!itional !iagnosti- -apabilit+ b+ using an

algorith, to -he-@ for sensor faults $his ill be vali! onl+for slo failures or faults in the sensors


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Case Studies

6 Coil Saturation D+na,i-s

6 Stable Rotor!+na,i-s

6 %nstable Rotor!+na,i-s Continuous Disturban-e

6 %nstable Rotor!+na,i-s Disturban-e /utsi!e i,its

6 Rotor evitation

6 =e-t of in-rease! unbalan-e ariation in Current


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Other Research Thrust Force

6 )'F's*oo@1?ls?

6 )'$R%S$ CAC%A$/;S2Designan!anal+sisof

thrusta-tive,agneti-bearingp!f

6 Challenges Available !ata

ali!ation

A--ura-+
http://imp/KPIs/Book1.xlsxhttp://imp/THRUST%20CALCULATIONS/02.Design_and_analysis_of_thrust_active_magnetic_bearing.pdfhttp://imp/THRUST%20CALCULATIONS/02.Design_and_analysis_of_thrust_active_magnetic_bearing.pdfhttp://imp/THRUST%20CALCULATIONS/02.Design_and_analysis_of_thrust_active_magnetic_bearing.pdfhttp://imp/THRUST%20CALCULATIONS/02.Design_and_analysis_of_thrust_active_magnetic_bearing.pdfhttp://imp/KPIs/Book1.xlsx


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Other Research User Note

6 Fe+ aspe-ts of spe-if+ing an A)*


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41Ch ll h

Timeline

6 )o!eling ( ali!ation De-e,ber n! )o!el of Rotor< A)* ith a!van-e! -ontroller

ali!ation ith e?isting results

Repla-e a!van-e! -ontroller ith 'D9'D if -ontrol is too

high

6$esting -ases ( result interpretation irst half of

Banuar+

6 Report< -onsultation an! !efense Se-on! half ofBanuar+

literature presentation - health & performance monitoring using active magnetic bearing

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