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200 Journal of Power Electronics, Vol. 13, No. 4, July 2013

 JPE 13-4-22

h ttp :// dx . do i. o r g /1 0 . 6 1 1 3 /JPE.2013.13.4.712

Control Method for Reduing the !"# of $rid

Current of !hree%Ph&'e $rid%Conneted (n)erter'

*nder #i'torted $rid +olt&ge'!h&nh%+u !r&n

,- !&e%on Chun

- "ong%"ee ee

,- "eung%$eun i

,,- &nd Eui%Cheol ho

,,,

,#ept. of Eletri&l Engineering- *ni)er'it of *l'&n- *l'&n- ore&

,,#ept. 5f Eletri&l Engineering- ungpoo &tion&l *ni)er'it- #&egu- ore&,,,

#ept. of Eletri&l Engineering- Puong &tion&l *ni)er'it- u'&n- ore&

Abstract

!hi' p&per propo'e' & ontrol ethod for reduing the tot&l h&roni di'tortion 8!"#9 of the grid urrent of three%ph&'e

grid%onneted in)erter ''te' hen the grid )olt&ge i' di'torted. !he !"# of the grid urrent &u'ed ; grid )olt&ge

h&roni' i' deri)ed ; on'idering the ph&'e del& &nd &gnitude &ttenu&tion due to the h&rd&re lo%p&'' filter 8P<9. !he

C&uh%=h&r> ine?u&lit theor i' u'ed in order to 'e&rh ore e&'il for the iniu point of the !"#. oth the g&in &nd

&ngle of the open'&tion )olt&ge &t the iniu point of the !"# of the grid urrent &re deri)ed ith the )&ri&tion of ut%off 

fre?uenie' of the h&rd&re P<. =iul&tion &nd experient&l re'ult' 'ho the )&lidit of the propo'ed ontrol ethod'.

Key words: Current ontrol- $rid%onneted in)erter- "&roni di'tortion- !ot&l h&roni di'tortion 8!"#9

(. ( !R5#*C!(5Reentl- the de&nd for rene&l energ 'oure' 8RE='9

'uh &' 'ol&r energ- ind energ- &nd hdrogen energ h&'

dr&&ti&ll inre&'ed in order to redue the fo''il energ.

!he RE=' &re nor&ll onneted to the utilit grid through

grid%onneted PM in)erter'- hih 'uppl the &ti)e &nd

re&ti)e poer' to the &in grid @1A- @2A. <or '&ll di'tri;uted

grid%onneted in)erter'- &n output urrent ontrol i'

 preferred. !herefore- the o't iport&nt i''ue for urrent

ontrolled grid%onneted in)erter' i' th&t the grid urrent

h&roni regul&tion i' ore 'tringent th&n th&t of other 

 poer eletroni' &ppli&tion'. =t&nd&rd' for grid%onneted

in)erter' 'uh &' (EEE 1B47 @3A pro)ide guid&ne on thele)el' of tot&l h&roni urrent di'tortion. hen & grid

)olt&ge i' di'torted- the di'torted grid )olt&ge &t' &' &n

extern&l di'tur;&ne for the grid urrent ontrol ''te-

re'ulting in & di'torted grid urrent. !he lo%order h&roni'

in the grid urrent &re not &ttenu&ted ; the n&tur&l filtering

M&nu'ript reei)ed J&n. 2B- 2013 re)i'ed Dpr. 1B- 2013

Reoended for pu;li&tion ; D''oi&te Editor o%eu ee.Corre'ponding Duthor: t h u n & il .u l' &n .& . r 

!el: FG2%B2%2BH%21GG- <&x: FG2%B2%2BH%16G6- *ni)er'it of *l'&n,#ept. of Eletri&l Eng.- *ni)er'it of *l'&n- ore&

,,#ept. of Eletri&l Eng.- ungpoo &tion&l *ni)er'it- ore&

,,,#ept. of Eletri&l Eng.- Puong &tion&l *ni)er'it- ore&

effet of the grid indut&ne. D' & re'ult- ;ul &nd o'tl

 p&''i)e filter' &re re?uired.5ne ethod for 'uppre''ing lo%order h&roni' i' to

inre&'e the ;&ndidth of & proportion&l integr&l 8P(9

ontroller @4A%@6A. Dlthough the urrent di'tortion &n ;e

redued &' the ''te ;&ndidth inre&'e' ; inre&'ing the

 proportion&l &nd integr&l g&in' &t the P( ontroller- the noi'e

iunit of the ''te i' redued. D proportion&l re'on&ne

8PR9 regul&tor &n pro)ide &n infinite g&in &t & 'eleted

re'on&nt fre?uen to redue the effet of un&nted

h&roni' @7A%@10A. "oe)er- h&roni' 'uppre''ion ; & PR 

regul&tor i' liited to 'e)er&l lo%order h&roni'. (n

&ddition- the ''te & ;eoe un't&;le hen the

h&roni' to ;e reo)ed i' out of the ;&ndidth of the

''te. Dnother &ppro&h for reduing urrent h&roni' i'

to inorpor&te the )&ri&tion of the grid )olt&ge ontrol

through &n &ddition&l feed;& p&th @11A. !he 'uppre''ion

&;ilit &n ;e enh&ned ; inre&'ing the output iped&ne

of the grid%onneted in)erter.

Dn indutor urrent feed;& 'hee ith & feed%for&rd

grid )olt&ge di'tur;&ne reIetion i' propo'ed for reduing

the tot&l h&roni di'tortion 8!"#9 of the grid urrent of &

three%le)el in)erter ith &n C filter @12A. !he 'eleted

h&roni' of the line urrent in the &ti)e filter &n ;e

open'&ted ; u'ing & lo'ed loop urrent ontrol on the

8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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8&9

8;9

<ig. 7. =iul&tion re'ult' ith open'&tion ethod: 8&9 three%

 ph&'e grid line )olt&ge' &nd urrent'-&

%&xi' referene &ndopen'&tion )olt&ge' 8;9 <<! &n&l'i' of &%ph&'e grid urrent.

<ig. G. "&rd&re onfigur&tion.

of the grid urrent &lul&ted ; the <<! &n&l'i' i' G.7S.

<ig. 7 'ho' the 'iul&tion re'ult' hen the open'&tion

ethod i' &pplied. !he &%&xi' referene )olt&ge i' not

'inu'oid&l due to the &%&xi' open'&tion )olt&ge. !he !"#

of the grid urrent i' redued to 2.3S.

8&9

8;9

<ig. H. Experient&l re'ult' ithout open'&tion ethod: 8&9grid line )olt&ge' &nd &%ph&'e grid urrent- 8;9 <<! &n&l'i' of &%ph&'e grid urrent.

 #. xperi%ental es,ltsDn experient&l te't &' perfored ; u'ing & 3+D

 prototpe three%ph&'e grid%onneted in)erter in & #=P

''te ;&'ed on & !M=320<2G33B- &' 'hon in <ig. G. !he

output )olt&ge' &nd urrent' of the three%ph&'e PM in)erter 

&nd the 3%ph&'e grid )olt&ge' &nd urrent' &re e&'ured &nd

inputted through & 12%;it D/# on)erter e;edded in the

#=P. !he three%ph&'e DC 'ith- ith to ($!' per ph&'e

onneted in &nti%'eri&l- i' u'ed &' the =!=. !he

grid%on/gridToff 'ign&l for the DC 'ith i' gener&ted ; the

#=P ontroller. D progr&&;le three%ph&'e & 'oure i'

u'ed to eul&te the &in grid )olt&ge &' & di'torted grid

)olt&ge gener&tion.<ig. H 'ho' the experient re'ult' of the grid )olt&ge &nd

urrent &nd the re'ult' of the <<! &n&l'i' of the grid urrent

ithout the open'&tion ethod. =ine the grid urrent h&'

'oe lo%order h&roni' lie the Bth- 7th- &nd 11th due to &

di'torted grid )olt&ge- the e&'ured !"# of the urrent i'

&;out G.BS. <ig. 10 'ho' the experient re'ult' hen the

open'&tion ethod i' &pplied. (t &n ;e 'een th&t the

e&'ured !"# of the grid urrent i' 'ignifi&ntl redued to

2.GS. <ig. 11 'ho' the &%&xi' referene &nd open'&tion

)olt&ge'- &nd the ; %&xi' referene &nd open'&tion )olt&ge'

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8&9

8;9

<ig. 10. Experient&l re'ult' ith open'&tion ethod: 8&9grid line )olt&ge' &nd &%ph&'e grid urrent- 8;9 <<! &n&l'i' of &%ph&'e grid urrent.

8&9

8;9

<ig. 11. &)efor' for &-&xi' referene &nd open'&tion

)olt&ge'- &nd  ;  -&xi' referene &nd open'&tion )olt&ge':

8&9 ith open'&tion ethod- 8;9 ithout open'&tion

ethod.

ithout &nd ith the open'&tion ethod- re'peti)el. D'

'hon in <ig. 11 8&9- the &- ; referene )olt&ge' h&)e &

'inu'oid&l &)efor- ;e&u'e the open'&tion )olt&ge' &re

>ero. D' 'hon in <ig. 11 8;9- the &- ; referene )olt&ge &re

di'torted due to the open'&tion )olt&ge' hen the

open'&tion ethod i' u'ed.

+. C5C*=(5=

!hi' p&per propo'e' & ontrol ethod for reduing the

!"# of the grid urrent under di'torted grid )olt&ge' in &

three%ph&'e grid%onneted in)erter. !he !"# of the grid

urrent due to grid )olt&ge h&roni' ; on'idering the

 ph&'e del& &nd &gnitude &ttenu&tion due to the h&rd&re

P< i' deri)ed. =ine the !"# &n ;e 'iplified ; u'ing the

C&uh%=h&r> ine?u&lit theor- it i' e&' to 'e&rh for the

iniu point of the !"#. +&ri&tion' in ;oth the g&in &nd

 ph&'e &ngle of the open'&tion )olt&ge for inii>ing the

!"# of the urrent &re in)e'tig&ted &ording to the ut%off 

fre?uen of the h&rd&re P<. hen un&nted h&roni'

&re h&nged- onl the g&in &nd ph&'e &ngle of the

open'&tion )olt&ge &re h&nged. =iul&tion &nd

experient&l re'ult' )erif th&t the !"# of the grid urrent

under & di'torted grid )olt&ge &n ;e 'ignifi&ntl redued ;

ore th&n three tie'- hen the propo'ed open'&tion

ethod i' u'ed.

DC5E#$ME!

!hi' or &' 'upported ; the Poer $ener&tion UEletriit #eli)er of the ore& (n'titute of Energ

!ehnolog E)&lu&tion &nd Pl&nning 8E!EP9 gr&nt funded

 ; the ore& go)ernent Mini'tr of noledge Eono

8o. 2010!10010046B9.

R E<ERECE=

@1A <. l&&;Ierg- V. Chen- &nd .=. I&er- WPoer Eletroni'

&' effiient interf&e in di'per'ed poer gener&tion''te' /0 ) 'rans. Poer lectron.- +ol. 1H- o. B- pp.11G4%11H4- =ep. 2004.

@2A . ropo'i- R. &''eter- !. ('e- =. Moro>ui- =.P&p&th&n&''iou- &nd . "&t>i&rgriou- WM&ing Mirogrid'

or.X  ) Poer 2 nerg *ag.- +ol.6- o.3- pp.41%B3- M&/Jun. 200G.

@3A (EEE 't&nd&rd for interonneting di'tri;uted re'oure'ith eletri poer ''te'- (EEE =t&nd&rd 1B47.2- 200G.

@4A J. #&nnehl- <. . <uh'- &nd P. . !hoger'en- WP( 't&te'p&e urrent ontrol of grid%onneted PM on)erter ith C filter'-.X  ) 'rans. Poer lectron.- +ol. 2B- o. H- pp. 2320%2330- =ep. 2010.

@BA E. !ining &nd #. $r&h&eh'- W$rid urrent regul&tion of &three%ph&'e )olt&ge 'oure in)erter ith & C input filter-X ) 'rans. Poer lectron.- +ol. 1G- o. 3H- pp. GGG%GHB-M& 2003.

@6A J. #&nnehl- C. e''el'- &nd <. . <uh'- Wiit&tion' of 

)olt&ge%oriented P( urrent ontrol of grid%onneted PM

8/9/2019 Control Method for Reducing the THD of Grid Current of Three-Phase Grid-Connected Inverters Under Distorted Grid Voltages

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retifier' ith C filter'-X  ) 'rans. lect. lectron.-+ol. B6- o. 2- pp. 3G0%3GG- <e;. 200H.

@7A #. . Vood &nd #. $. "ole'- W=t&tion&r fr&e urrentregul&tion of PM in)erter' ith >ero 'te&d%'t&te error-X

 ) 'rans. Poer lectron.- +ol. 1G- o. 3- pp. G14%G22-M& 2003.

@GA $. =hen- . Vhu- J. Vh&ng- &nd #. u- WD ne feed;& ethod for PR urrent ontrol of C filter%;&'ed

grid%onneted in)erter-X ) 'rans. lect. lectron.- +ol.B7- o. 6- pp. 2033%2041- Jun. 2010.

@HA Y. . !rinh &nd ". ". ee- W(pro)eent of CurrentPerfor&ne for $rid Conneted Con)erter *nder #i'troted

$rid Condition-X in Proceeding of P3- pp.1%6- 2011.@10A . Qu&n- . Mer- ". =teler- &nd J. Dlleling-

W=t&tion&r%fr&e gener&li>ed integr&tor' for urrent ontrolof &ti)e poer filter' ith >ero 'te&d%'t&te error for 

urrent h&roni' of onern under un;&l&ned &nddi'torted oper&tion ondition'-X ) 'rans. )nd. Appl.- +ol.3G- o.2- pp. B23%B32- M&r./Dpr. 2002.

@11A Q. =&to- !. ('hi>u&- . e>u- &nd !. &t&o& - WD neontrol 'tr&teg for )olt&ge%tpe PM retifier' to re&li>e>ero 'te&d%'t&te ontrol error in input urrent-X )

'rans. )nd. Appl.- +ol. 34- o.3- pp. 4G0%4G6- M&/Jun.1HHG.

@12A !. D;e&'eer&- C. M. John'on- #. J. Dtin'on- &nd M.Dr'trong- W=uppre''ion of line )olt&ge rel&ted di'tortion

in urrent ontrolled grid onneted in)erter'-X )

'rans. Poer lectron.- +ol. 20- o. 6- pp. 13H3%1401- o). 200B.

@13A P. M&tt&)elli- WD lo'ed%loop 'eleti)e h&roniopen'&tion for &ti)e filter'-X  ) 'rans. )nd. Appl.-+ol. 37- o.1- pp. G1%GH- J&n./<e;. 2001.

@14A J. Miret- M. C&'till&- J. M&t&'- J. M. $uerrero- &nd J. C.+&'?ue>- W=eleti)e h&roni%open'&tion ontrol for 'ingle%ph&'e &ti)e poer filter ith high h&roni

reIetion-X  ) 'rans. )nd. lectron./ +ol.B6- o.G- pp.31173127- Dug. 200H.

@1BA M. P. &>iero'i- M. J&'in'i- &nd $. ron&-W#=P%;&'ed ontrol of grid%onneted poer on)erter'

oper&ting under grid di'tortion'-X  ) 'rans. )nd. )nfor%at./ +ol. 7- o. 2- pp.204%211- M& 2011

@16A .$. . Roli- #. R. d& Co't&- &nd M. Drede'-

WDn&l'i' &nd 'oft&re ipleent&tion of & ro;u't'nhroni>&tionP iruit ;&'ed on the p? theor-X  ) 'rans. )nd.

 lectron./ +ol.B3- o.6- pp.1H1H%1H26- #e. 2006.

@17A P. l&&;Ierg- R. !eodore'u- M. i'erre &nd D. +. !i;u'-W5)er)ie of ontrol &nd grid 'nhroni>&tion for di'tri;uted poer gener&tion ''te'-X  ) 'rans.

 )nd. lectron./ +ol.32- o.B- pp.13HG%160H- 5t. 2006.

Thanh-Vu Tran &' ;orn in +ietn&- in1HG0. "e reei)ed hi' .=. &nd M.=. in

Eletroni' &nd Eletri&l Engineering fro

the "o Chi Minh Cit *ni)er'it of !ehnolog- "o Chi Minh Cit- +ietn&- in200B &nd 200G- re'peti)el. "e i' urrentloring to&rd' hi' Ph.#. in Eletri&l

Engineering &t *l'&n *ni)er'it- *l'&n-ore&.

Tae-Won Chun &' ;orn in ore&- in 1HBH."e reei)ed hi' .=. in Eletri&lEngineering fro u'&n &tion&l *ni)er'it-u'&n- ore&- in 1HG1- &nd hi' M.=. &ndPh.#. in Eletri&l Engineering fro =eoul

 &tion&l *ni)er'it- =eoul- ore&- in 1HG3&nd 1HG7- re'peti)el. =ine 1HG6- he h&'

 ;een & e;er of the f&ult of the #ep&rtent of Eletri&lEngineering- *l'&n *ni)er'it- *l'&n- ore&- here he i'urrentl & <ull Profe''or. "e &' ith the #ep&rtent of Eletri&l &nd Coputer Engineering- *ni)er'it of !enne''ee-nox)ille- !- *=D- &' & +i'iting =hol&r. <ro 200B to 2006-he 'er)ed &' & +i'iting =hol&r ith the #ep&rtent of Eletri&l&nd Coputer Engineering- +irgini& Poltehni (n'titute &nd=t&te *ni)er'it- l&';urg- +D- *=D. "i' urrent re'e&rh

intere't' inlude grid%onneted in)erter ''te' &nd & otor ontrol.

Hong-Hee Lee &' ;orn in ore&- in 1HB7."e reei)ed hi' .=.- M.=. &nd Ph.#. inEletri&l Engineering fro =eoul &tion&l*ni)er'it- =eoul- ore&- in 1HG0- 1HG2 &nd

1HH0- re'peti)el. =ine 1HGB- he h&' ;een &e;er of the f&ult of the #ep&rtent of Eletri&l Engineering- *l'&n *ni)er'it-*l'&n- ore&- here he i' urrentl & <ull

Profe''or. <ro 1HH0 to 1HH1- he &' ith the #ep&rtent of Eletri&l Engineering- !ex&' DUM *ni)er'it- College =t&tion-!- *=D- &' & +i'iting =hol&r. "i' urrent re'e&rh intere't'inlude ind poer gener&tion- &trix on)erter'- &ndnetor%;&'ed f&tor &uto&tion'.

Heung-Gun Ki &' ;orn in ore&- in

1HB6. "e reei)ed hi' .=.- M.=.- &nd Ph.#.in Eletri&l Engineering fro =eoul &tion&l *ni)er'it- =eoul- ore&- in 1HG0-1HG2 &nd 1HGG- re'peti)el. =ine 1HG4- he

h&' ;een & e;er of the f&ult of the#ep&rtent of Eletri&l Engineering-ungpoo *ni)er'it- #&egu- ore&- here

he i' urrentl & <ull Profe''or. <ro 1HH0 to 1HH1- he &' iththe #ep&rtent of Eletri&l Engineering- *ni)er'it of i'on'in%M&di'on- M&di'on- (- *=D- &' & +i'iting =hol&r.

<ro 2006 to 2007- he 'er)ed &' & +i'iting =hol&r ith the#ep&rtent of Eletri&l &nd Coputer Engineering &t Mihig&n=t&te *ni)er'it- E&'t &n'ing- M(- *=D. "i' urrent re'e&rhintere't' inlude the ontrol of & &hine' &nd P+ poer 

gener&tion.

!ui-Cheo" #ho &' ;orn in ore&- in 1H60."e reei)ed hi' .=. in Eletri&lEngineering fro =eoul &tion&l *ni)er'it-=eoul- ore&- in 1HG4- &nd hi' M.=. &nd

Ph.#. in Eletri&l &nd Eletroni'Engineering fro D(=! 8ore& Dd)&ned(n'titute of =iene &nd !ehnolog9-#&eIeon- ore&- in 1HG6 &nd 1HH1-

re'peti)el. =ine 1HHB- he h&' ;een & e;er of the f&ult of 

the #ep&rtent of Eletri&l Engineering- Puong *ni)er'it-u'&n- ore&. <ro 1HH7 to 1HHG- he &' ith the #ep&rtentof Eletri&l Engineering- *ni)er'it of i'on'in%M&di'on-

M&di'on- (- *=D- &' & +i'iting =hol&r. <ro 200B to 2006- he&l'o 'er)ed &' & +i'iting =hol&r ith the #ep&rtent of Eletri&l Engineering &nd Coputer =iene &t the *ni)er'itof C&liforni&- (r)ine- CD- *=D. "i' urrent re'e&rh intere't'

inlude the ontrol of dn&o *P=' &nd poer line onditioner'.