BRITISH STANDARD BS EN 60904 9 2007 Photovoltaic devices — Part 9 Solar simulator performance requirements The European Standard EN 60904 9 2007 has the status of a British Standard ICS 27 160 ?? ? ??[.]
Trang 1Photovoltaic devices —
The European Stand rd EN 6 9 4-9:20 7 has the status of a
British Stand rd
ICS 2 1 0
Trang 2This Bri sh Stan ard was
published u der the authoriy
of the Stan ard s Policy an
Strate y Commi e
on 3 J n ary 0 8
© BSI 2 0
This British Stand rd is the UK implementation of EN 6 9 4-9:20 7 It is
identical to IEC 6 9 4-9:20 7
The UK p rticip tion in its prep ration was entrusted to Tech ical Commit e
GEL/ 82, Solar photov oltaic energ y sy stems
A l st of org anizations represented on this commit e can be obtained on
request to its sec etary
This publ cation do s not purport to include al the neces ary provisions of a
contract User are responsible for its cor ect a pl cation
Compl anc with a British Standard cannot c nfer im m unity f om
legal obl gations
Amendm ents/c r ig enda is ued sinc publcation
Trang 3NORME EUROPÉENNE
Nov mber 2007
Euro e n Commite for Electrotec nical Stan ardiz ation
Comité Euro pé n de Normalsation Electro te ch iq e
Euro äis hes K omite für Elektro te ch is he No rmu g
Ce ntral Se cre ta ria t: ru d Sta ssa rt 3 5, B - 10 0 Bru se ls
© 2 0 CENELEC - A ll rig ts of e ploitatio in a y form a d b a y me ns reserved worldwid for CENELEC memb rs
R ef No EN 6 9 4-9:2 0 E
ICS 2 16
En ls version
Phot ovoltaic devices -
Part 9: Solar simulator per ormance r equirements
(IEC 60904-9:2007)
Disposit ifs phot ovoltạques -
Part ie 9: Exigenc s pour le
fonct ionnement des simulat eurs solaires
(CEI 60904-9:2007)
Phot ovoltaisc e Einric t ungen -
Tei 9: Leist ungsanforderungen
an Sonnensimulatoren
(IEC 60904-9:2007)
This Euro e n Stan ard was a pprove b CENELEC o 2 0 -1 -01 CENELEC memb rs are b u d t o c omply
w ith t he CEN/CENELEC Inte rnal Regulatio s whic h s p lat e t he c on itio s for giv in t his Europ a Sta d rd
the status o f a n t io al st an ard w itho t a y alteration
Up-t o-d t e lst s a d biblo ra phic a l referenc es c o nc ernin suc h n t io al st an ards ma b o bt ain d o
a plc atio t o the Ce tral Se retariat o r t o a y CENELEC me mbe r
This Europe n St an ard ex ists in thre official versio s (En lsh, Fre c h, Germa ) A versio in a y ot her
la g a ge ma e b t ranslat io u d r t he re sp nsibi ty of a CENELEC me mb r into it s own la g a ge a d n t ifie
to t he Ce t ra l Sec reta riat h s t he sa me status as the oficial versio s
CENELEC me mb rs are t he n tio al ele t rot ec hnic al c o mmit t ees of Austria, Belgium, Bulg ria, Cy rus, t he
Czec h Repu lc , De ma rk, Est onia, Finla d, Franc e , Germa y, Greec e, Hu ga ry, Ic ela d, Irela d, Italy, L t v ia,
Lit hu nia, L x emb urg, Malt a, t he Nethe a ds, Norwa , Pola d, Port ug l, Ro ma ia, Slo va k ia, Slove ia, Sp in,
Swe e , Swit zerla d a d the United Kin dom
Trang 4The text of doc ment 8 / 48 / FDIS, future edition 2 of IEC 6 9 4-9, prep red by IEC TC 8 , Solar
photovoltaic energ s stems, was s bmited to the IEC-CENELEC p ralel vote an was a proved by
CENELEC as EN 6 9 4-9 on 2 0 -1 -01
The folowin dates were fi ed:
– latest date by whic the EN has to b implemented
at national level by publcation of an identical
– latest date by w hic the national stan ard conflctin
A nnex ZA has b en ad ed by CENELEC
_ _ _ _ _
Endorsement notice
The text of the International Stan ard IEC 6 9 4-9:2 0 was a proved by CENELEC as a Euro e n
Stan ard without an modification
_ _ _ _ _
Trang 51 Sco e an o ject .4
2 Normative ref eren es .4
3 Terms an definition 4
3.1 solar simulator 4
3.2 test plane .5
3.3 desig ated test are 5
3.4 data sampl n time .5
3.5 data ac uisition time .5
3 6 time f or ac uirin the I-V c aracteristic 5
3.7 eff ective ir adian e .5
3.8 sp ctral ran e 6
3.9 sp ctral matc 6
3.10 non-u iformity of ir adian e in the test plane .6
3.1 temp ral in ta i ty of ir adian e 6
3.12 solar simulator clas ification 7
4 Simulator req irements .7
5 Me s rement proced res .8
5.1 Introd ctory remark 8
5.2 Sp ctral matc 8
5.3 Non-u iformity of ir adian e on the test plane 9
5.4 Temp ral in ta i ty of ir adian e 10 5.4.1 Solar simulators f or I-V me s rement 10 5.4.2 Solar simulators f or ir adian e exp s re .12 6 Name plate an data s e t 12 Bibl ogra h 14 Fig re 1 – Evaluation of STI for a lon pulse solar simulator 1
Fig re 2 – Evaluation of STI for a s ort pulse solar simulator 1
Ta le 1 – Glo al referen e solar sp ctral ir adian e distribution given in IEC 6 9 4-3 .6
Ta le 2 – Definition of solar simulator clas ification 7
Ta le 3 – Example of solar simulator ratin me s rements .8
Annex ZA (normat iv e) Normat iv e referenc es t o int ernat ional publc at ion w it h t heir
c oresp n in Euro e n publc at ion 15
Trang 6PHOTOVOLTA IC DEVICES –
Part 9: Solar simulator performance requirements
1 Scope and object
IEC stan ard for photovoltaic devices req ire the u e of sp cific clas es of solar simulators
de med a pro riate f or sp cific tests Solar simulators can b either u ed f or p rorman e
me s rements of PV devices or en uran e ir adiation tests This p rt of IEC 6 9 4 provides
the definition of an me n for determinin simulator clas ification In the case of PV
p r orman e me s rements, u in a solar simulator of hig clas do s not el minate the ne d
to q antify the influen e of the simulator on the me s rement by makin sp ctral mismatc
cor ection an analy in the in uen es of u if ormity of ir adian e of the test plane an
temp ral sta i ty on that me s rement Test re orts for devices tested with the simulator
s al lst the clas of simulator u ed for the me s rement an the method u ed to q antify the
simulator’s efect on the res lts
The purp se of this stan ard is to define clas ification of solar simulators f or u e in in o r
me s rements of ter estrial photovoltaic devices, solar simulators are clas if ied as A, B or C
f or e c of the thre categories b sed on criteria of sp ctral distribution matc , ir adian e
non-u iformity on the test plane an temp ral in ta i ty This stan ard provides the req ired
methodologies for determinin the ratin ac ieved by a solar simulator in e c of the
categories
This stan ard is refer ed to by other IEC stan ard in whic clas req irements are laid down
f or the u e of solar simulators Solar simulators f or ir adian e exp s re s ould at le st fulfi
clas CCC req irements where the third let er is related to lon term in ta i ty In the case of
u e f or PV p rorman e me s rements, clas ification CBA is deman ed where the third let er
is related to the s ort term in ta i ty
The f ol owin ref eren ed doc ments are in isp n a le f or the a plcation of this doc ment
For dated ref eren es, only the edition cited a pl es F r u dated referen es, the latest edition
of the referen ed doc ment (in lu in any amen ments) a pl es
IEC 6 9 4-3: P hotovolt aic devic s – P art 3: Me sureme t principl es for t erest rial
p otovoltaic (PV) sol ar d evic s wi th refere c sp ctral ir ad ia c data
3 Terms and def initions
For the purp ses of this doc ment, the f ol owin terms an definition a ply
3.1 solar simulator
A solar simulator can b u ed f or two dif f erent a plcation :
a) I-V me s rement
b) Ir adian e exp s re
The eq ipment is u ed to simulate the solar ir adian e an sp ctrum Simulators u ual y
con ist of thre main comp nents: (1) l g t source(s) an as ociated p wer s p ly; (2) an
o tic an f ilters req ired to modify the output b am to me t the clas if i ation req irements;
Trang 7an (3) the neces ary controls to o erate the simulator Solar simulators s al b la eled by
their mode of o eration d rin a test c cle These are ste d state, sin le pulse, an multi
-pulse
NOT 1 Two ty e of s lar simulators are c mmo ly u e to d termin I-V c ara teristic : Ste d -state a d
p ls d Th p ls d s lar simulators c n b furth r s b ivid d into lo g p ls s stems a q irin th total I-V
c ara teristic d rin o e fla h a d s ort p ls s stems a q irin o e I-V d ta p int p r fla h
NOT 2 Be id th lg t s urc , th lamp p wer s p ly a d th o tic , als th I-V d ta a q isitio , th
ele tro ic lo d a d th o eratin s ftware ma b a inte ral p rt of th s lar simulator Re uireme ts for th
relate me s reme t te h iq e are in lu e in oth r p rts of th IEC 6 9 4 s rie
3.2 te t pla e
the plane inten ed to contain the device u der test at the ref eren e ir adian e level
3.3 d sign te te t are
region of the test plane that is as es ed f or u iformity
NOT If re uire , ty ic l g ometrie c n b s e ifie A s e if i atio relate to a circ lar g ometry is als
p rmite
3.4 d ta s mpl n time
the time to take a sin le data set (ir adian e, voltage, c r ent In the case of simultane u
me s rement, this is given by the c aracteristic of the A/D con erter In the case of
multiplexed s stems the data sampl n rate is the multiplexin rate
A multiplexin time of 1 μs would give a sampl n rate of 1 MegaSamples p r secon
NOT Du to a p s ible d la time f or tra sie t o ci atio at e c d ta p int th d ta s mpln rate mu t b
relate to th d ta a q isitio s stem o ly
The data sampl n time is u ed for evaluation of temp ral sta i ty
3.5 d ta a quisition time
the time to take the entire or a p rt of the c r ent-voltage c rve
NOT 1 Th time of d ta a q isitio d p n s o th n mb r of I-V d ta p ints a d a d la time th t mig t b
a ju ta le
NOT 2 In th c s of p ls d s lar simulators th time of d ta a q isitio is relate to th me s reme ts
re ord d d rin a sin le fla h
3.6 time for a quiring the I-V c ara teristic
if the I-V c rve of a PV device is me s red throu h sectorin in dif f erent p rts an s c es ive
f las es, the ful time for ac uirin the entire I-V c aracteristic is the s m of times of data
ac uisition
3.7 ef fe tiv ir a ia c
ir adian e may c an e d rin data ac uisition of a I-V p r orman e me s rement The
ef f ective ir adian e is then the average ir adian e of al data p ints
NOT Care s o ld b ta e th t p s ible ira ia c c re tio me ts th re uireme ts of IEC 6 8 1
Trang 83.8 spe tral ra g
the referen e sp ctral distribution of s nl g t at Air Mas 1,5 Glo al is defined in IEC 6 90
-3 For simulator evaluation purp ses this stan ard restricts the wavelen th ran e fom
4 0 nm to 1 10 nm In ac ordan e with Ta le 1 this wavelen th ran e of interest is divided in
6 wavelen th b n s, e c contributin a certain p rcentage to the integrated ir adian e
3.9 spe tral matc
sp ctral matc of a solar simulator is defined by the deviation fom AM 1,5 referen e sp ctral
ir adian e as laid down in IEC 6 9 4-3 For 6 wavelen th intervals of interest, the p rcentage
of total ir adian e is sp cif ied in Ta le 1
Table 1 – Global refere c solar spe tral ir a ia c distribution
giv n in IEC 6 9 4-3
Wavelen th ran e
nm
Perc ntage of total
ir adianc in the
wavelen th ran e
4 0 nm − 1 10 nm
1
2
3
4
5
6
4 0 − 5 0
5 0 − 6 0
6 0 − 7 0
7 0 − 8 0
8 0 − 9 0
9 0 − 1 10
18,4 %
19,9 %
18,4 %
14,9 %
12,5 %
15,9 %
3.10 non-unif ormity of ir a ia c in the te t pla e
%
10
min max
min max
⎥
⎤
⎢
⎣
⎡
+
−
=
−
irradianc irradianc
irradianc irradianc
u iformity No
(1)
where the maximum an minimum ir adian e are those me s red with the detector(s) over
the desig ated test are
3.1 temporal instabi ity of ir a ia c
temp ral in ta i ty is def i ed by two p rameters:
a) Short term in ta i ty (STI)
This relates to the data sampln time of a data set (ir adian e, c r ent, voltage) d rin an
I-V me s rement This value of temp ral in ta i ty may b dif ferent b twe n data sets on
the I-V c rve In that case the s ort term in ta i ty is determined by the worst case
For b tc testin of cels or mod les with no ir adian e monitorin d rin I-V
me s rement the STI is related to the time p riod b twe n ir adian e determination
b) L n term in ta i ty (LTI)
This is related to the time p riod of interest:
– For I-V me s rements it is the time f or takin the entire I-V c rve
– For ir adiation exp s re tests it is related to the time p riod of exp s re
%
10
min max
min max
⎥
⎤
⎢
⎣
⎡
+
−
=
irradi anc irradianc
irradianc irradianc
y insabil Temp ral
(2)
Trang 9where the maximum an minimum ir adian e de en on the a pl cation of the solar simulator.
If the solar simulator is u ed f or en uran e ir adiation tests, temp ral in ta i ty is def i ed by
the maximum an minimum ir adian e me s red with a detector at an p rtic lar p int on the
test plane d rin the time of exp s re
3.12 solar simulator cla sific tion
a solar simulator may b one of thre clas es (A, B, or C) for eac of the thre categories –
Sp ctral matc , sp tial non-u iformity an temp ral in ta i ty Eac simulator is rated with
thre leters in order of sp ctral matc , non-u if ormity of ir adian e in the test plane an
temp ral in ta i ty (for example: CBA)
NOT Th s lar simulator cla sific tio s o ld b p rio ic ly c e k d in ord r to pro e th t cla sif i atio is
maintain d For e ample s e tral ira ia c ma c a g with o eratio time of th u e lamp or u iformity of
ira ia c is in u n e b th refle tio c n itio s in th te t c amb r
4 Simulator requirements
Ta le 1 gives the p r orman e req irements for sp ctral matc , non-u iformity of ir adian e
an temp ral in ta i ty of ir adian e For the sp ctral matc , al six intervals s own in Ta le 1
s al agre with the ratios in Ta le 2 to o tain the resp ctive clas es Ref er to Clau e 5 for
proced res to me s re an calc late the thre p rameters (sp ctral matc , non-u if ormity of
ir adian e an temp ral in ta i ty) of the simulator
If the simulator is inten ed to b u ed f or STC me s rement, it s ould b ca a le of
prod cin an ef fective ir adian e of 1 0 0 W/m
2
at the test plane Hig er or lower ir adian e
levels may also b req ired
NOT If hig er or lower ira ia c is re uire , this ma c a g th simulator cla sific tio
These req irements a ply to b th ste d state an pulsed solar simulators
Table 2 – Definition of solar simulator cla sific tions
Temp ral instabi ty
Cla sif ic tio s
S e tral match to al
intervals spe if ied in
Table 1
No -u if ormity
of ir adianc
S ort term
instabi ty of
iradianc
S I
L n term
instabi ty of
ir adianc
L I
NOT An e ample of s lar simulator cla sific tio f or I-V me s reme t is s own in Ta le 3 Th cla sif i atio of
s e tral matc is giv n for a n n-itere Xe o lamp Th cla sific tio f or n n-u iformity of ira ia c d p n s
o th mo ule siz of intere t
Trang 10Table 3 – Ex mple of solar simulator rating me s reme ts
Cla sif ic tio a
spe if ied in table 2
S e tral match to al
intervals spe if ied in Table 1
No -u if ormity of
ir adianc f or a spe if ic
mo ule siz
Temp ral instabi ty of
ir adianc
CB
0,81 in 4 0 – 5 0 nm (A)
0,71 in 5 0 – 6 0 nm (B)
0.6 in 6 0 – 7 0 nm (B)
0,7 in 7 0 – 8 0 nm (B)
1,5 in 8 0 – 9 0 nm (C)
1,7 in 9 0 – 1 10 nm (C)
2,8 % for mo ule siz
10 cm x 17 cm
S I e alu tio :
Simulta e u
me s reme t of mo ule
c r e t, mo ule v lta e
a d ira ia c Trig er
d la b twe n c a n ls
le s th n
10 n n s c n s Within
th t time le s th n 0,5 %
c a g of ira ia c (A)
LTI f or ta in th e tire
I-V c rv in a 10 ms
interv l = 3,5 % (B)
Worst c s cla sif i atio = C Cla sif i atio = B Cla sif i atio = B
5 Measurement proce ures
5.1 Introd ctory remark
It is the intent of this stan ard to provide g idan e on the req ired solar simulator
p r orman e data to b taken, an the req ired location in the test are f or these data to b
taken It is not the intent of this stan ard to define the p s ible method to determine the
simulator sp ctrum or the ir adian e at an location on the test plane It is the resp n ibi ty of
the simulator man f acturer to provide inf ormation up n req est for test method u ed in the
determination of the p rorman e in e c clas ification These method s ould b
s ientif i al y an commercial y ac e ta le proced res The clas ification of a solar simulator
do s not provide any information a out me s rement er ors that are related to photovoltaic
p r orman e me s rements o tained with a clas ified solar simulator Su h er ors are
de en ent on the actual me s rement devices an proced res u ed
5.2 Spe tral matc
5.2.1 Avai a le method are the u e o
a) sp ctroradiometer comprisin a gratin monoc omator an a dis rete detector,
b) a CCD or photodiode ar ay sp ctrometer (CCD = c arge coupled device),
c) a multiple detector as embly with b n p s f ilters, an
d) a sin le detector with multiple b n p s fiters
NOT Care s o ld b ta e to a oid re p n e f rom stra lg t or s c n ord r wa ele gth eff ects Care s o ld
b ta e th t th s n itivity of th s n or is s ita le in th wa ele gth ra g of intere t Care s o ld b ta e to
e s re th t th time c n ta t of th d te tor is s ita le for th p ls le gth of th simulator
5.2.2 The sp ctral ir adian e data taken s ould b integrated in the ran e 4 0 nm to 1 10
nm an the p rcentage contribution of the 6 wavelen th intervals defined in Ta le 1 to the
integrated ir adian e determined
5.2.3 Calc late the sp ctral matc for e c wavelen th interval, whic is the ratio of
calc lated p rcentage f or the simulator sp ctrum an the solar sp ctrum