Iec 60904 3 2016

This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou edition: a the direct b am ir adian e cor esp n ing to the glo al ir adian e in Ta le 1 was

Phot ov olt aic dev ices –

Part 3: Measurement principles for t er est rial phot ov oltaic (PV) solar dev ices

w it h reference spect ral ir adiance data

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Photov olt aic dev ices –

Part 3: Measurement principles for t er est rial phot ov oltaic (PV) solar dev ices

w ith reference spectral ir adiance dat a

W arnin ! Mak e s re th t you o tain d this publc tion from a a thorize distribut or

A tt ention! Veui ez vou a s rer qu vou avez o te u c t te publc tion v ia u distribute r a ré

2 Normative referen es 5

3 Me s rement prin iples 6

4 Ref eren e solar sp ctral ir adian e distribution 6

An ex A (informative) Use of SMARTS 5

Biblogra h 5

Fig re 1 – Glo al an direct referen e solar sp ctral ir adian e distribution lsted in Ta le 1 5

Ta le 1 – Ref eren e solar spectral ir adian e distribution 7

Ta le A.1 – Input data f or generation of ref eren e solar sp ctral ir adian e distribution 5

PHOTOVOLTA IC DEVICES –

Part 3: Measurement principles f or ter estrial photovoltaic (PV)

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International Stan ard IEC 6 9 4-3 has b en pre ared by IEC tec nical commite 8 : Solar

photovoltaic energ s stems

This third edition can els an re laces the secon edition publ s ed in 2 0 This edition

con titutes a tec nical revision

This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou

edition:

a) the direct b am ir adian e cor esp n ing to the glo al ir adian e in Ta le 1 was in lu ed;

b) the term “Glo al photon ir adian e” in Ta le 1 was c an ed to “Glo al photon f l x”;

c) the titles of some clau es have b en c an ed (others have b en ad ed) in ac ordan e

with the u ual stru ture of IEC stan ard

This publ cation contain an atac ed fi e in the form of an Ex el spre d he t This f ile is

Ful inf ormation on the votin f or the a proval of this stan ard can b fou d in the re ort on

votin in icated in the a ove ta le

This publ cation has b en drafted in ac ordan e with the ISO/IEC Directives, Part 2

A l st of al p rts of the IEC 6 9 4 series, publ s ed u der the general title P hot ov lt aic

de ic s, can b fou d on the IEC website

The commit e has decided that the contents of this publ cation wi remain u c an ed u ti

the sta i ty date in icated on the IEC we site u der "htp:/we store.iec.c " in the data

related to the sp cific publ cation At this date, the publ cation wi b

• reconfirmed,

• with rawn,

• re laced by a revised edition, or

1 Scope and object

This p rt of IEC 6 9 4 a pl es to the f ol owin photovoltaic devices f or ter estrial a pl cation :

– solar cel s with or without a protective cover;

– s b-as embl es of solar cel s;

– mod les; an

NOT Th term “te t s e ime ” is u e to d n te a y of th s d vic s

The prin iples contained in this stan ard cover testin in b th natural an simulated s nl g t

Photovoltaic con ersion is sp ctral y selective d e to the nature of the semicon u tor

materials u ed in PV solar cel s an mod les To comp re the relative p rf orman e of

diff erent PV devices an materials a ref eren e stan ard solar sp ctral distribution is

neces ary This stan ard in lu es s c a ref eren e solar sp ctral ir adian e distribution

This stan ard also des rib s b sic me s rement prin iples for determinin the electrical

output of PV devices The prin iples given in this stan ard are desig ed to relate the

p rorman e ratin of PV devices to a common ref eren e ter estrial solar sp ctral ir adian e

distribution

The referen e ter estrial solar sp ctral ir adian e distribution is given in this stan ard in order

to clas ify solar simulators ac ording to the sp ctral p r orman e req irements contained in

The fol owin doc ments, in whole or in p rt, are normatively referen ed in this doc ment an

are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a pl es For

u dated referen es, the latest edition of the ref eren ed doc ment (in lu in an

amen ments) a pl es

IEC 6 8 1, Ph t ov ltaic devic s – P ro ed ures for temp rature a d irad ian e c re t io s to

me sured I -V c ara t eristics

IEC 6 9 4-1, Ph t ovol taic d evic s – Part 1: Measureme ts of p ot ovol taic c r e t-v l ta e

c ara teristics

IEC 6 9 4-2, Ph t ovoltaic d evic s – Part 2: Re uireme ts for p otov l taic refere c d evic s

IEC 6 9 4-5, Ph t ovol taic d evic s – Part 5: Determin tion of the e uiv l ent c l l temp rature

(ECT) of p otovoltaic (PV) d evic s b the o e -circ it v l tag method

IEC 6 9 4-7, Ph tovoltaic devic s – Part 7 : Comp t at ion ofthe sp ctral mismatc c re tion

In c r ent practice the photovoltaic p r orman e of a solar cel or mod le is determined by

exp sin it at a k own temp rature to sta le s nlg t, natural or simulated, an me s rin its

c r ent-voltage (I-V) c aracteristic c rve whi e me s rin the mag itu e of b th the in ident

ir adian e an the PV device temp rature Detai ed I-V c rve me s rement proced res are

in lu ed in IEC 6 9 4-1 The me s red p rorman es can then b cor ected to stan ard test

con ition (STC) or other desired con ition of ir adian e an temp rature ac ordin to

IEC 6 8 1 The cor ected p wer output at the maximum p wer voltage an STC is commonly

refer ed to as the rated p wer

In ident ir adian e can b me s red by me n of a PV referen e device (whose sp ctral

thermo i e-typ ir adian e detector (pyranometer) If a PV referen e device is u ed, it s al

satisfy the req irements sp cif ied in IEC 6 9 4-2 Temp rature determination of the PV

device u der test s al b made ac ordin to IEC 6 9 4-1 or IEC 6 9 4-5

Sin e a solar cel has a wavelen th-de en ent resp n e, its p rorman e is sig if i antly

af fected by the sp ctral distribution of the in ident radiation, whic in natural s nl g t varies

with factors s c as location, we ther, time of ye r, time of day, orientation of the receivin

s r ace, etc an with a simulator varies with its typ an con ition of u e Regardles of

whether the ir adian e is me s red with either a thermo i e-typ radiometer ( hat is not

sp ctral y selective) or with a referen e solar device, the sp ctral ir adian e distribution of the

in omin l g t s al b k own in order to u e IEC 6 9 4-7 to calc late the sp ctral mismatc

b twe n the me s red p r orman e an the predicted p rorman e u der the glo al or direct

ref eren e solar sp ctral distribution defined in this stan ard

When the sp ctral resp n ivity of the PV device is k own as determined ac ordin to

IEC 6 9 4-8, it is also p s ible to u e IEC 6 9 4-7 to compute the p r orman e of that PV

device when exp sed to l g t of an k own sp ctral ir adian e distribution

4 Ref erence solar spectral ir adiance distribution

The referen e solar sp ctral distribution AM1.5 are given in Ta le 1 an Fig re 1 These are

– glo al distribution (direct + dif f use) of s nl g t, cor esp n in to an integrated ir adian e

of 1 0 0 W·m

–2

in ident on a s n-acin plane s r ace ti ted at 3 º to the horizontal, an

– the direct distribution of s nl g t, cor esp n in to an integrated ir adian e of 9 0 W·m

–2

in ident on a s n-f acin plane s rf ace p rp n ic lar to the in ident s nl g t,

con iderin the wavelen th-de en ent alb do of a l g t b re soi , u der the fol owin

atmospheric con ition :

– U.S stan ard atmosphere with CO

2con entration in re sed to c r ent level (3 0 p m), a

rural a rosol model, an no p l ution;

– precipita le water: 1,416 4 cm;

– ozone content: 0,3 3 8 atm-cm (or 3 3,8 DU);

– turbidity (a rosol o tical de th): 0,0 4 at 5 0 nm;

– pres ure: 101,3 5 kPa (i.e se level)

Data contained in Ta le 1 have b en generated u in the solar sp ctral model SMARTS,

Version 2.9.2 A general des ription of this model an its s ita i ty to re rod ce actual solar

factor is a pl ed to the direct sp ctrum givin an integrated ir adian e of 9 0 W·m

–2

in the

wavelength ran e 0 to infinity

At the time of publ cation of this stan ard the SMARTS Version 2.9.2 sp ctral model code is

ht p:/ www.nrel.gov/r ed /smarts A co y of the model, not f or distribution purp ses, is ke t

u der IEC TC 8 control

The contents of Ta le 1 are in lu ed in an at ac ed f ile in the form of an Ex el spre d he t

1Table 1 – Refere c solar spe tral ir a ia c distribution

–

·s–1

nm–1

–

·s–1

nm–1