Journal of Japan Solar Energy Society, 48（3）, 45-50（2022）Research Paper
研究論文

Performance inspection and diagnosis of PV modules
and strings by continuous monitoring of Imp and Vmp
Yoshihiro HISHIKAWA*1, 4‡
Masahiro YOSHITA*1
Yasuo CHIBA*1
Manit SEAPAN*2,3
Keiichi OKAJIMA*2

I,mpPS,9VmpPS 常時監視による性能評価・動作診断技術
ᖖ᫬┘ど࡟ࡼࡿ PV39 ᛶ⬟ホ౯࣭ືసデ᩿ᢏ⾡
菱川 善博 *1, 4 ‡吉田 正裕 *1
Manit Seapan*2,3

千葉 恭男 *1
岡島 敬一 *2

Abstract
Precise performance characterization and diagnosis of photovoltaic (PV) modules and strings by using themaximum-power voltage Vmp and maximum-power current Imp during MPPT operation are investigated and verified
by simulation and experiments. They are analyzed by using new temperature correction formulas, which take into
account the voltage-dependent temperature coefficient of the crystalline silicon PV devices. Slight change in the Pmax
under any specified conditions such as STC (1 kW/m2, 25 C) can be sensitively detected with precision better thanabout 1%.

Experimental and simulation results indicate that variation of the Vmp and Imp by partial shading caused byvarious factors such as weeds and nearby PV modules can be also sensitively detected, even when only one cell in thestring is partially shaded.
Keywords: photovoltaics, outdoor measurement, diagnosis, temperature correction, Imp, Vmp࣮࣮࢟࣡ࢻ㸸ኴ㝧㟁ụ㸪ᒇእ ᐃ㸪ᛶ⬟デ᩿㸪 ᗘ⿵ṇ㸪,PS㸪9PS㸬ࡣࡌࡵ࡟ືస㟁ὶ Imp ࡜᭱኱ฟຊືస㟁ᅽ Vmp ࢆ⏝࠸࡚㸪ኴ㝧㟁ụࡢ STC ➼௵ពࡢ↷ᗘᗘ࡟࠾ࡅࡿᛶ⬟ࡸ㸪ࡑࡢഹ࠿࡞ኚ

ኴ㝧ගⓎ㟁㸦PV㸧ࢩࢫࢸ࣒ࡀቑຍࡍࡿ࡜ඹ࡟㸪PV ࣔࢪ໬ࢆṇ☜࡟ホ౯࡛ࡁࡿ᪉ἲࢆ㛤Ⓨࡋࡓ 7-10).ᮏ◊✲࡛ࡣࡑ࣮࣭ࣗࣝࢩࢫࢸ࣒ࡢᛶ⬟࣭ືస≧ែࡸ୙ලྜࢆᒇእࡢ⮬↛ࡢᡭἲࢆ⏝࠸࡚ཧ⪃ᩥ⊩ 7, 8)ࡢෆᐜࢆᣑᙇࡋ㸪MPPT ✌ാኴ㝧ගୗ࡛ṇ☜࡟ホ౯ࡍࡿᚲせᛶࡀ┈ࠎ㧗ࡲࡗ࡚࠸ࡿ.ᒇ

ࡍࡿ PV ࢫࢺࣜࣥࢢࡢᛶ⬟ホ౯࡜㒊ศᙳ➼ࡢືసデ᩿࡟ࡘእ I-V࠸࡚㸪ࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿゎᯒ࡜」ᩘ✀㢮ࡢࢫࢺࣜࣥᐃ࡟ࡼࡿホ౯࡟ࡘ࠸࡚ࡣ㸪ኴ㝧㟁ụࣔࢪ࣮ࣗࣝᆺ↷ᗘࢭࣥࢧ㸦PVMS㸧࡟ࡼࡿ↷ᗘᐃ㸪㧗⢭ᗘᗘᐃ࣭ࢢ࡛ࡢᐇド࡟ࡘ࠸࡚㆟ㄽࡍࡿ.

⿵ṇᢏ⾡ࡸ↷ᗘࡴࡽࣇ࢕ࣝࢱ➼ࡢᢏ⾡ࡀࡇࢀࡲ࡛࡟㛤Ⓨࡉࢀ㸪పࢥࢫࢺ࡞ィჾࢆ⏝࠸࡚ 0.5%㸦1V㸧⛬ᗘ௨ෆࡢ㸬ᐇ㦂Ⰻዲ࡞෌⌧ᛶ࡛ᒇእᛶ⬟ホ౯ࡀྍ⬟࡛࠶ࡿࡇ࡜ࡀ♧ࡉࢀ࡚࠸ࡿ 1, 2).ࡋ࠿ࡋ✌ാ୰ࡢ PV ࣔࢪ࣮ࣗࣝࡢ I-V ≉ᛶࢆᐇ㦂ࡣ⏘⥲◊஑ᕞࢭࣥࢱ࣮㸦బ㈡┴㫽ᰨᕷ㸧ࡢኴ㝧㟁ụᐃࡍࡿࡓࡵ࡟ࡣ㸪ࢩࢫࢸ࣒ࡢືసࢆ೵Ṇࡍࡿᚲせࡀ࠶ࡿࡢࣔࢪ࣮ࣗࣝᒇእ᭚㟢ࢧ࢖ࢺ࡛✌ാ୰ࡢ 4 ࡘࡢࢫࢺࣜࣥࢢ

࡛㸪㏣ຍࡢไᚚᅇ㊰ࡀᚲせ࡜࡞ࡿୖ࡟㸪ࡑࡢ㛫ࡢ㟁ຊࡀ↓

㸦E-1A, E-1B, W-1C, W-1D㸧ࢆ⏝࠸࡚⾜ࡗࡓ.W-1D ࡢእほ㥏࡟࡞ࡿ࡜࠸࠺ၥ㢟Ⅼࡀ࠶ࡗࡓ.ࡑࡢࡓࡵᚑ᮶ࡢᖖ᫬┘どࢆ Fig. 1 ࡟♧ࡍ.࠸ࡎࢀࡶ⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụࣔࢪ࣮ࣗࡣࣃ࣮࣡ࢥࣥࢹ࢕ࢩࣙࢼ࣮㸦PCS㸧༢఩ࡢࢩࢫࢸ࣒ฟຊಀ

ࣝ㸦W-1C,D ࡣ PERC㸧ࢆ౑⏝ࡋ࡚࠾ࡾ㸪ྛࢫࢺࣜࣥࢢࡢᩘࡸ㸪ࢫࢺࣜࣥࢢ༢఩ࡢⓎ㟁㔞➼ࢆᇶ࡟ࡋ࡚⾜ࢃࢀࡿࡇ࡜ᵓᡂ࡜┤㏆ࡢࣔࢪ࣮ࣗࣝᒇෆ I-Vࡀከ࠿ࡗࡓᖖ᫬┘どᢏ⾡࡟ࡘ࠸࡚ࡶᵝࠎ࡞ィᐃ࠿ࡽ᥎ᐃࡋࡓᛶ⬟࣭⤫ィ࣭ࣃ࣓࣮ࣛࢱࡢᖹᆒ್ࢆ Table 1 ࡟♧ࡍ.MPPT ືస୰ࡢ Impゎᯒ᪉ἲࡀ㛤Ⓨࡉࢀᐇ᪋ࡉࢀ࡚࠸ࡿ 3-6).᭱㏆➹⪅ࡽࡣ᭱኱࡜ Vmp ࡣ 㟁 ὶ ࢭ ࣥ ࢧ IsoBlock I-FG-1C ࡜ 㟁 ᅽ ࢭ ࣥ ࢧ㟁ຊⅬ㏣ᚑไᚚ㸦MPPT㸧✌ື୰࡛ࡶィྍ⬟࡞᭱኱ฟຊ

IsoBlock V-1C ࢆࣔࢪ࣮ࣗࣝ࡜ PCS 㛫ࡢࢣ࣮ࣈࣝ࡟タ⨨ࡋ

*1 National Institute of Advanced Industrial Science and Technology(AIST), Tsukuba, Ibaraki 305-8568‡e-mail: y-hishikawa@aist.go.jp*2 Department of Risk Engineering, University of Tsukuba*3 present address: King Mongkut's University of Technology Thonburi(KMUTT)*4 present address: Research Organization of Science and Technology,Ritsumeikan University
Received: January 27, 2022, Accepted: 0DUFK 18, 2022

*1 ᅜ❧◊✲㛤Ⓨἲே⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ ෌⏕ྍ⬟࢚ࢿࣝࢠ࣮
◊✲ࢭࣥࢱ࣮ 305-8568 Ⲉᇛ┴ࡘࡃࡤᕷᱵᅬ 1-1-1 ୰ኸ➨ 2‡e-mail: y-hishikawa@aist.go.jp*2 ⟃Ἴ኱Ꮫࢩࢫࢸ࣒᝟ሗ⣔*3 ⌧ᡤᒓ㸸ࣔࣥࢡࢵࢺ⋤ᕤ⛉኱Ꮫࢺࣥࣈ࣮ࣜᰯ㸦ࢱ࢖⋤ᅜ㸧
*4 ⌧ᡤᒓ㸸❧࿨㤋኱Ꮫ⥲ྜ⛉Ꮫᢏ⾡◊✲ᶵᵓ㸦ཎ✏ཷ௜㸸2022 ᖺ 1 ᭶ 27 ᪥㸪ཷ⌮᪥㸸2022 ᖺ 3 ᭶ 18 ᪥㸧

1 −− 45

Yoshihiro HISHIKAWA, Masahiro YOSHITA, Yasuo CHIBA, Manit SEAPAN and Keiichi OKAJIMA࡚ィࡋࡓ.᪥ᑕ↷ᗘ G ࡣ㸪E-1A ࠾ࡼࡧ W-1D ࢫࢺࣜࣥࢢᗘࡢ㧗࠸᫨㛫࡟ప࠸.0.1 ⛊㛫㝸࡛ィࡋࡓ Imp ࡜ Vmp ࡢ࡟㞄᥋ࡋ࡚タ⨨ࡋࡓ KIS 〇 PVMS㸦Fig. 1 ◚⥺୸㸧ࢆ⏝࠸⏕ࢹ࣮ࢱ࡟ࡣ MPPT ไᚚ࡟ࡼࡿ࿘Ἴᩘᩘ Hz㸪᣺ᖜ±1%㹼

࡚ィFig. 2 ࡛ࡣ 100 Ⅼ㸦10 ⛊㛫㸧ᩘ%ࡢ᣺ືࡀぢࡽࢀࡿ 10)ࡢ࡛㸪ࡋࡓ.ࣔࢪ࣮ࣗࣝ

ᗘࡣ㸪ࢫࢺࣜࣥࢢ୰ኸ௜㏆ࡢࣔࢪ࣮ࣗࣝ⿬㠃࡟㈞ࡾࡘࡅࡓⓑ㔠᢬ᢠయ࡚ィࡋࡓᗘࢭࣥࢧࢆ⏝࠸10).ྛࢹ࣮ࢱࡣ 0.1 ⛊㛫㝸࡛ẖ᪥༗๓ 5 ᫬㹼༗ࡢᖹᆒ್ࢆ♧ࡍ.௨㝆ࡢ㆟ㄽ࣭ゎᯒ࡛ࡶࡍ࡭࡚ 100 Ⅼࡢᖹᆒ್ࢆ⏝࠸ࡓ.0.1 ⛊௨እࡢィ㛫㝸࡛ࡶᮏ◊✲ࡢᡭἲࡣᚋ 7 ᫬ࡢ㛫࡟ E-1A, B ࡣ Hioki LR8402 ࣮ࣟ࢞㸪W-1C, D ࡣ඲ࡃၥ㢟࡞ࡃ౑⏝࡛ࡁࡿ.ࡑࡢ㝿࡟ MPPT ไᚚࡢࢧ࢖ࢡࣝLR8450 ࣮ࣟ࢞ࢆ⏝࠸࡚ィ᫬㛫ࡼࡾࡶ༑ศ㛗࠸᫬㛫ࢹ࣮ࢱࢆᖹᆒ໬ࡍࡿࡇ࡜࡟ࡼࡗ

㸭グ㘓ࡋࡓ.ࡇࢀࡽࡢࢫࢺࣜ

ࣥࢢࡣ㏻ᖖࡣ PCS ࡟᥋⥆ࡉࢀ࡚࠸ࡿࡀ㸪10 ศẖ࡟ᩘ⛊㛫࡚㸪ษࡾ᭰࠼ᶵ࡟ࡼࡗ࡚ I-V ࢸࢫࢱ࡟᥋⥆ࡉࢀࡿࡢ࡛㸪ࡑࡢᩘᐃㄗᕪࢆపῶࡍࡿࡇ࡜ࡀ࡛ࡁࡿ.

⛊㛫ࢆ㝖࠸ࡓ Imp, Vmp ࢆィ ࣭ゎᯒࡋࡓ.࡞࠾ᚋ࡟㆟ㄽࡍࡿࡼ࠺࡟㸪ࡇࡢᡭἲࡣ

(a)ᐃ㛫㝸ࡢ㛗▷࡟㛵ࢃࡽࡎ㐺⏝ྍ⬟࡛G࠶ࡿ.ᮏ◊✲࡛⏝࠸ࡓ PVMS ࡢ᫬㛫ᛂ⟅ࡣኴ㝧㟁ụࣔࢪࣗ

T1࣮ࣝ࡜ྠᵝ࡟㸪᪥ᑕࡢ᫬㛫ኚືࡼࡾ㐶࠿࡟㧗㏿࡞ࡢ࡛㸪᪥ᑕࡢ᫬㛫ኚືࡑࡢࡶࡢ࡟ࡼࡿ

ᐃㄗᕪࡣ↓ど࡛ࡁࡿ.᭦࡟

PVMS ࡢࢫ࣌ࢡࢺࣝឤᗘ࡜ゅᗘ≉ᛶࡣᕷ㈍ࡢኴ㝧㟁ụࣔࢪ࣮ࣗࣝ࡬ࡢ㏆ఝᗘࡀ㧗࠸ࡢ࡛㸪ධᑕゅࡀ㠀ᖖ࡟኱ࡁ࠸➼ࡢ≉ู࡞ሙྜࢆ㝖࠸࡚ࡇࢀࡽࡢ⿵ṇࡢᚲせ࡞ࡃ㸪1%⛬ᗘ௨ෆࡢ෌⌧ᛶ࡛ᒇእᛶ⬟ホ౯ࢆ⾜࠺ࡇ࡜ࡀ࡛ࡁࡿ 2).୍᪉

࡛㞼ࡢᙳࡀᆅୖࢆ⛣ືࡍࡿ࡜᪥ᑕࡢ✵㛫ࡴࡽࡶྠ᫬࡟ⓎVmp⏕ࡍࡿࡢ࡛ 11)㸪PV ࣔࢪ࣮࣭ࣗࣝࢫࢺࣜࣥࢢෆࡢ᪥ᑕࡴࡽ(b)ࡸ㸪PV ࣔࢪ࣮࣭ࣗࣝࢫࢺࣜࣥࢢ࡜ PVMS ࡢ᪥ᑕࡢᕪࡀ࠶ࡿሙྜ࡟ࡣᐃㄗᕪࡀⓎ⏕ࡍࡿ.ᮏ◊✲࡛ࡣࡇࢀࡽࡢᙳ㡪ࢆపῶࡍࡿࡓࡵ࡟ 11)㸪᪥ᑕࡢ᫬㛫ኚືࡀ 5 ⛊㛫࡛ 5 W/m2௨ෆࡢࢹ࣮ࢱࢆゎᯒ࡟⏝࠸ࡓ.

Imp




Fig. 2. Examples of the measured (a) irradiance and temperature,and (b) Imp and Vmp for E-1A.
㸱㸰Imp, Vmp ࡢ Fig. 2(b)ࡢࡼ࠺࡞ᒇእィTest site (W-1D) at AIST Kyushu Center.

Fig.1
Table 1String

E-1A

7

7.49

E-1B

58.07

W-1C

58.64

W-1D

ரࡿࡢ࡛㸪Imp, Vmp ࡢ

Summary of the PV strings in the present study.
No. of Imp
modules (A)

58.65

ᗘ࡟

ࡇ࡜ࡣ㞴ࡋ࠸.ࡇࡢࡓࡵᚑ᮶ࡣ୍ᐃᮇ㛫ࡢࢹ࣮ࢱࢆ⏝࠸ࡓStart
No. of cells
in module measurement

Vmp
(V)

Pmax
(W)

23.98
(167.9)30.33(151.6)179.5(1257)
244.6(1223)

48

2019/12/22⬟ࡸ୙ලྜデ᩿ࡀ⾜ࢃࢀࡿࡇ࡜ࡀከ࠿ࡗࡓ 3-6,12).᭱㏆➹⪅

60

2019/12/22

ࡽࡣ㸪⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụࡢࢲ࢖࣮࢜ࢻ≉ᛶ⌮ㄽᘧ࡟ᇶ

31.61(158.0)31.78(158.9)273.2(1366)
274.7(1374)

60

2020/12/1160ゎᯒ࣭⤫ィࡸ」ᩘ PV ࢫࢺࣜࣥࢢࡢ┦ᑐẚ㍑ࢆ⏝࠸࡚㸪ᛶ࡙࠸ࡓᐇ㦂⤖ᯝࡢゎᯒ࠿ࡽ㸪(1)(2)ᘧࢆ⏝࠸࡚⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụࡢ Imp, Vmp ࡢ

2020/12/11

ᗘ౫Ꮡᛶࡀᐇ㦂࣭ࢩ࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝඹ࡟㠀ᖖ࡟ᑠࡉ࠸ࡇ࡜ࢆ⪃៖ࡋࡓ㏆ఝᘧ࡛࠶ࡿ.(1)ᘧࡢ 1 ⾜┠ࡣ I-V ≉㸱㸬,PS9PS ᖖ᫬┘ど࡟ࡼࡿ 39 ᛶ⬟ホ౯ᛶࡢᗘ⿵ṇᘧ࡜ྠࡌ࡛࠶ࡿ 2).ࡇࢀࡔࡅ࡛ࡶ Vmp ࡢᗘ≉ᛶࢆᴫࡡ㏆ఝࡋ࡚࠸ࡿࡀ㸪2 ⾜┠ࢆ⪃៖ࡍࡿࡇ࡜࡛ࡼࡾᐃ⤖ᯝ E-1A ࢫࢺࣜࣥࢢࡢᛌᬕ᪥࡟࠾ࡅࡿ↷ᗘ G㸪ࣔࢪ࣮ࣗࣝ
ᗘ T1 ཬࡧ Imp, Vmp ࡢ ᐃ⤖ᯝ౛ࢆ Fig. 2(a)ཬࡧ 2(b)࡟♧ࡍ.ཧ⪃ᩥ⊩ 7,8,10)࡜ྠᵝ࡟ Imp ࡣᴫࡡ↷ᗘ࡟ẚ౛ࡋ࡚࠸ࡿ.Vmp ࡣࣔࢪ࣮ࣗࣝᗘ⿵ṇࢆ⾜࠺ࡇ࡜ࡀ࡛ࡁࡿࡇ࡜

ࢆ᫂ࡽ࠿࡟ࡋࡓ.(1)(2)ᘧࡣࢲ࢖࣮࢜ࢻ≉ᛶࡢ⌮ㄽᘧ࡜㸪Impࡢ⿬㠃ࢹ࣮ࢱࡣᖜᗈ࠸↷ᗘ࣭ᗘ↷ᗘ࡟ࡼࡿኚ໬࡜ࣔࢪ࣮ࣗࣝᛶ

⬟ࡸ୙ලྜ࡟ࡼࡿኚ໬ࢆ༊ูࡋ࡚⏕ࢹ࣮ࢱ࠿ࡽ┤ㄞࡍࡿ



㸱㸯

ᗘ⿵ṇ

ᗘࡢప࠸ᮅኤ࡟㧗ࡃ㸪ࣔࢪ࣮ࣗࣝ

Journal of Japan Solar Energy Society⢭ᗘࡀྥୖࡍࡿ 9).ཝᐦ࡟ࡣ n㸪Dࡢ᭱㐺್ࡣኴ㝧㟁ụࡢ✀㢮࡟ࡼࡗ࡚␗࡞ࡿ࡜ண᝿ࡉࢀࡿࡀ㸪ࡇࡇ࡛ࡣᵝࠎ࡞⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụ࡛Ⰻ࠸㏆ఝ࡜࡞ࡿࡇ࡜ࡀ௨๓ࡢ◊✲ 2,7-10)࡛☜ㄆࡉࢀ࡚࠸ࡿ nEg/q = 1.232 V㸪D= 0.05%/K ࢆ౑⏝ࡋ− 46 −

Vol.48, No.3, 2022

Performance inspection and diagnosis of PV modules and strings by continuous monitoring of Imp and Vmp

ࡓ.ࡇࢀࡽࡢ್ࢆ⏝࠸࡚ྛ✀⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụࣔࢪࣗ

1A ࢫࢺࣜࣥࢢࡢ 2019 ᖺ 12 ᭶㹼2021 ᖺ 11 ᭶ࡢ⣙ 2 ᖺ㛫࣮ࣝࡸࢫࢺࣜࣥࢢࡢ Vmp ࢆ±0.5%㸦1V㸧⛬ᗘࡢ㧗⢭ᗘ࡛࡟࠾ࡅࡿ Pmax2/G ࡢ᪥ᖹᆒ್ࢆ Fig. 4(a)࡟♧ࡍ.⅊Ⰽ୸༳ࡣᗘ⿵ṇ࡛ࡁࡿ 2,7-10).ࡇࡢ᪉ἲࡣ⤫ィฎ⌮ࡸࣔࢪ࣮ࣗࣝಶู

↷ᗘ 0.36㹼0.44 kW/m2, ⥳Ⰽࡣ 0.66㹼0.74 kW/m2, ㉥Ⰽࡣࡢ0.95㹼1.05 kW/m2 ࡛ࡢ Pmax2/G ࡢ᪥ᖹᆒ࡛࠶ࡿ.

ᗘಀᩘࡢ᝟ሗ➼ࡀ୙せ࡛㸪ྛ✀⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụࣔࢪ࣮ࣗࣝࡸࢫࢺࣜࣥࢢ࡟㐺⏝ྍ⬟࡛࠶ࡿ.(1)(2)ᘧࢆ⏝࠸࡚ Fig. 2(b)ࡢ Vmp, Imp ࢆ 25Υ࡟⿵ṇࡋࡓ Vmp2 ࡜㸪Imp2 (=Vmp2Imp )ࢆ↷ᗘ G ࡛つ᱁໬ࡋࡓ Imp2/G ࢆ Fig. 3(a)࡟㸪ࡑࢀࡽࡢ✚࠿ࡽồࡵࡓ Pmax2/G ࢆ Fig. 3(b)࡟♧ࡍ.௒ᚋ (1)(2)ᘧ࡟ྜ
್ࢆ Vmp1, Imp1, Pmax1㸪ࢃࡏ࡚ィᗘ⿵ṇᚋࡢ್ࢆ Vmp2,Imp2 /GImp2, Pmax2 ࡜グࡍࡿ.
Vmp 2­
N nE ·½T2  T1 §¨¨Vmp1  C g ¸¸¾®Vmp1 q ¹¿ T1 ©
¯u ^1  D T2  T1 `I mp 2 I mp1

(1)
D(2)







Pmax2 /G

Vmp1, Vmp2㸸⿵ṇ๓ᚋࡢ Vmp㸪Imp1, Imp2

㸸⿵ṇ๓ᚋࡢ Imp㸪T1, T2㸸⿵ṇ๓ᚋࡢࣔࢪ࣮ࣗࣝ⤯ᑐNC㸸ࢭࣝ┤ิᩘ㸪n㸸ኴ㝧㟁ụࢭࣝࡢࢲ࢖࣮࢜ࢻ⌮᝿ಀᩘ㸪Eg㸸⤖ᬗࢩࣜࢥࣥࡢࣂࣥࢻࢠࣕࢵࣉ㸦Ҹ1.12 eV㸧㸪q㸸㟁Ꮚࡢ㟁Ⲵ㸪

D㸸ISC ࡢᗘ㸪Pmax1 /Gᗘಀᩘ.

E

㸱.㸱 STC ࡟࠾ࡅࡿ Imp, Vmp, Pmax ࡢホ౯࡜デ᩿ᗘ⿵ṇࡋࡓ Imp2/G, Vmp2 ࡸ Pmax2/G ࡣ↷ᗘࡔࡅ࡟౫Ꮡ

ࡍࡿࡢ࡛㸪Fig. 3(b)ࡢࡼ࠺࡟↷ᗘ࡟ᑐࡋ࡚ࣉࣟࢵࢺࡋࡓࢢ
ࣛࣇࡢᙧࡣ㸪PV ࢫࢺࣜࣥࢢࡢ≉ᛶࡀ୙ኚ࡞ࡽ㸪ࡢ᮲௳࡟౫Ꮡࡏࡎ୍ᐃ࡛࠶ࡿ
᫬ᮇࡢ

Pmax2 /Gᐃ᪥➼10).౛࠼ࡤ Fig. 3(b)࡜࡯ࡰྠ

ᐃࢹ࣮ࢱࢆ Fig. 3(c)࡟♧ࡍ.ᛌᬕ᪥࡛ࡣ࡞࠸ࡢ࡛㸪Pmax1 /G㞼࡟ࡼࡿ᪥ᑕࡢሙᡤࡴࡽ࡟ࡼࡿㄗᕪࢆ㑊ࡅࡿࡓࡵ࡟㸪๓㏙ࡢ᪉ἲ୍࡛㒊ࡢࢹ࣮ࢱࡀ๐㝖ࡉࢀ࡚࠸ࡿࡀ㸪Pmax2/G ࡢ್ࡣ࡯ࡰ࡯ࡰ඲↷ᗘᇦ࡟ࢃࡓࡗ࡚ᛌᬕ᫬ࡢ⤖ᯝ㸦Fig. 3(b)㸧
࡜⣙s1%௨ෆ୍࡛⮴ࡋ࡚࠸ࡿ.Fig. 3(b)(c)ࡢ↷ᗘ 1 kW/m2࡟࠾ࡅࡿ್ࡣ㸪25 C, 1 kW/m2㸪ࡘࡲࡾ STC ࡛ࡢ Pmax ࡟ᑐᛂࡋ࡚࠸ࡿ.ࡇࢀࡽࡢ್ࡣ Table 1 ࡟♧ࡍ┤㏆ࡢࣔࢪ࣮ࣗࣝ
I-V ≉ᛶࡢᒇෆ STCFᐃ࠿ࡽồࡵࡓ್㸦ᅗ୰ⓑᢤࡁ୸༳㸧࡜࡯ࡰ୍⮴ࡋ࡚࠾ࡾ㸪ヲ⣽ࡣḟ㡯࡛㆟ㄽࡍࡿ.
್࡜ࡋ࡚ Vmp1, Imp1, G ࡜ࣔࢪ࣮ࣗ
Fig. 3 (a) Vmp2 and Imp2/G of E-1A corrected to 25 C from theᗘ T1 ࡢ▐᫬ࢹ࣮ࢱࡔࡅࢆ⏝࠸ࡿࡢ࡛㸪ࣔࢪ࣮ࣗࣝࡢ

data of Figs. 2(b). (b) Pmax2/G determined as the product of Vmp2

ᗘಀᩘࡸ୍ᐃᮇ㛫ࡢ⤫ィࢹ࣮ࢱ➼ࡣ୙せ࡛࠶ࡾ㸪PV ࢫand Imp2 of (a). (c) Similar results as (b) measured on a partially㸱.㸲 MPPT ✌ാ୰ࡢ PV ࢫࢺࣜࣥࢢࡢᖖ᫬┘どᮏ◊✲ࡢᡭἲ࡛ࡣィࣝࢺࣜࣥࢢࡢࣜ࢔ࣝࢱ࢖࣒デ᩿࡜㛗ᮇ㐃⥆┘どࡢ୧᪉ࢆྠ

sunny day.

2 ௨ୖࡢᖜᗈ᫬࡟⾜࠺ࡇ࡜ࡀྍ⬟࡛࠶ࡿ.᭦࡟ 0.2㹼1 kW/m࠸↷ᗘ࡛㸪ࡲࡓ Fig. 3(b)(c)࡟౛♧ࡍࡿࡼ࠺࡞ᛌᬕ㸪ᬕࢀ

 Fig. 4(a)ࡢ㉥୸༳㸦ႏ㸪↷ᗘ 0.95㹼1.05 kW/m2㸧ࡣ STC᫬ࠎ᭎࡟ຍ࠼࡚᭎ኳ㸪୍㒊㞵ኳࢆྵࡵ࡚ᵝࠎ࡞ኳೃ࡛ࢫࢺ㸦ႏ㸪1 kW/m2㸧௜㏆࡟࠾ࡅࡿ Pmax2/G ࡢᖹᆒ್࡛࠶ࡾ㸪ࣜࣥࢢࡢ✌ື≧ែࢆ㐃⥆┘どࡍࡿࡇ࡜ࡀ࡛ࡁࡿࡇ࡜ࡶ฼Fig. 3(b)(c)࠿ࡽࢃ࠿ࡿࡼ࠺࡟↷ᗘ 1 kW/m2 ௜㏆࡛ Pmax2/GⅬ࡛࠶ࡿ 7,9,10).ࢫࢺࣜࣥࢢᛶ⬟㐃⥆┘どࡢ୍౛࡜ࡋ࡚㸪E-ࡢኚ໬ࡣᑠࡉ࠸ࡢ࡛㸪㉥୸༳ࡢ್ࡣ STC ࡟࠾ࡅࡿ Pmax ࡜Vol.48. No.3

− 47 −

太陽エネルギーYoshihiro HISHIKAWA, Masahiro YOSHITA, Yasuo CHIBA, Manit SEAPAN and Keiichi OKAJIMA

ぢ೴ࡏࡿ.⣙ 2 ᖺ㛫࡛ Pmax2/G ࡢኚ໬ࡣ±1%⛬ᗘ࡛࠶ࡾ㸪ᮇ࡜࡯ࡰྠࡌ್ࡲ࡛ᅇ᚟ࡋࡓ.Pmax ࡣ㒊ศᙳ⣙ 5%࠿ࡽ 17%ࡲ㛫ෆࡢ E-1A ࢫࢺࣜࣥࢢࡢᛶ⬟ኚືࡣࡑࡢ⛬ᗘ௨ෆ࡛࠶ࡗ࡛༢ㄪ࡟ῶᑡࡋ㸪⣙ 17%௨ୖ࡛ࡣ࡯ࡰ୍ᐃ࡛࠶ࡗࡓ.ࡇࢀ

ࡓࡇ࡜ࡀࢃ࠿ࡿ.E-1B ࢫࢺࣜࣥࢢ࡛ࡶྠᵝࡢ⤖ᯝࡀᚓࡽࢀࡽࡢ⤖ᯝࡣ㸪」ᩘࣔࢪ࣮ࣗࣝࢆྵࡴࢫࢺࣜࣥࢢ࡛㸪Vmp, Imp10).ࡼࡾప↷ᗘࡢ⥳Ⰽ୸༳㸪⅊Ⰽ୸༳ࡶྠᵝࡢഴྥࡢቑῶ࠿ࡽ㸪ࢭࣝ㠃✚ࡼࡾᑠࡉ࡞㒊ศᙳࡢ᳨ฟࡀྍ⬟࡛࠶࡛࠶ࡾ㸪1 kW/m2 ⛬ᗘࡢ↷ᗘࡀᚓࡽࢀ࡞࠸᭎ኳ᪥➼࡛ࡶ㏵ࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ.࡞࠾ྠᵝࡢࢩ࣑࣮ࣗࣞࢩ࡛ࣙࣥ㸪༢࡚࠸ࡿษࢀ↓ࡃ㐃⥆┘どࡀ⾜࠼ࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ.ࡇࡇ࡛ࡣࢹ

୍ࣔࢪ࣮ࣗࣝ୰ࡢ 1 ࢭࣝ㒊ศᙳ࡛ࡣࢭࣝ㠃✚ࡢ⣙ 40%ࡲ࣮ࢱࡣ๭ឡࡍࡿࡀ㸪ࣔࢪ࣮ࣗࣝࡢ࢝ࣂ࣮࢞ࣛࢫὙί࡟ࡼࡗ࡛ 8)㸪18 ࣔࢪ࣮ࣗࣝ┤ิࢫࢺࣜࣥࢢ୰ࡢ 1 ࢭࣝ㒊ศᙳ࡛࡚ Imp2 ࡀ୍᫬ⓗ࡟ 0.5%⛬ᗘቑຍࡋ࡚㸪ࡑࡢᚋ 10 ᪥㛫⛬ᗘࡣࢭࣝ㠃✚ࡢ⣙ 10%ࡲ࡛ Vmp ࡀቑຍࡋࡓ.Fig. 5(c)ࡢ㒊ศᙳ࡛ඖࡢࣞ࣋ࣝ࡟ᡠࡗ࡚Ᏻᐃࡍࡿᑠࡉ࡞ኚ໬ࡶ᳨▱࡛ࡁ࡚

17%㹼18%㛫࡛ Vmp, Imp ࡀᛴ⃭࡟ኚ໬ࡍࡿࡢࡣࣂ࢖ࣃࢫࢲ

࠸ࡿ 10).2020 ᖺ 12 ᭶㹼2021 ᖺ 11 ᭶ࡢ W-1C ࢫࢺࣜࣥࢢࡢ࢖࣮࢜ࢻࡢືస࡟ࡼࡿࡶࡢ࡛࠶ࡾ㸪ࡇࡢࡇ࡜ࢆ฼⏝ࡋ࡚ࣂ⤖ᯝࢆ♧ࡋࡓ Fig. 4(b)࡛ࡶ㸪Fig. 4(a)࡜ྠᵝ࡟ Pmax2 ࡢኚື࢖ࣃࢫࢲ࢖࣮࢜ࢻືసࡢ᭷↓ࢆ᥎ᐃ࡛ࡁࡿྍ⬟ᛶࡀ࠶ࡿ.

ࡣ 1 ᖺ㛫࡛±1%⛬ᗘ௨ෆ࡛࠶ࡾ㸪෤Ꮨ࡟㧗ࡃኟᏘ࡟ప࠸ഴ
ྥࡀ࠶ࡿࡼ࠺࡟ࡶぢཷࡅࡽࢀࡿ.ࡇࡢཎᅉࡣࡲࡔ≉ᐃ࡛ࡁ࡚࠸࡞࠸ࡀ㸪ཧ⪃ᩥ⊩ 13)࡛ PERC ࣔࢪ࣮ࣗࣝ࡟࠾ࡅࡿྠ
ᵝࡢኚືࡀ LETID ᅇ᚟ࡢᗘ౫Ꮡᛶ࡜ࡋ࡚ሗ࿌ࡉࢀ࡚࠾

ࡾ㸪ཎᅉ≉ᐃ࡟ࡣ㛗ᮇࡢࢹ࣮ࢱศᯒࡀᚲせ࡛࠶ࡿ.
 E-1A, W-1C ࢫࢺࣜࣥࢢ୰ࡢࣔࢪ࣮ࣗࣝ࡟ࡘ࠸࡚ᒇෆSTC ࡟࠾ࡅࡿ I-Vᐃࢆᐇ᪋ࡋ࡚࠾ࡾ㸪ࡑࡢ⤖ᯝ࠿ࡽ᥎ᐃ

ࡉࢀࡿ Pmax2 ࢆ Fig. 4 ࡟㯮୕ゅ࡛♧ࡍ.㯮୕ゅࡣ㉥୸༳࡜ᴫࡡࡼࡃ୍⮴ࡋ࡚࠾ࡾ㸪ᮏ◊✲ࡢ᪉ἲ࡛⟬ฟࡋࡓ Pmax2/G ࡟Dࡼࡗ࡚㸪ࢫࢺࣜࣥࢢᛶ⬟ࡢഹ࠿࡞ኚ໬ࢆᩄឤ࡟᳨ฟ࡛ࡁࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ.ࡓࡔࡋ Imp2, Vmp2, Pmax2 ⟬ฟࡢ⤯ᑐ⢭ᗘ࡟ࡣ㸪↷ᗘ࣭ ᗘࡢᐃㄗᕪࡀ኱ࡁࡃᙳ㡪ࡋ㸪ᮏ◊✲࡛ࡣ⪃៖ࡋ࡞࠿ࡗࡓ㟁ຊࢣ࣮ࣈࣝࡢ㟁Ẽ᢬ᢠࡸ PCS ࡟ࡼࡿMPPT ไᚚࡢ⢭ᗘ࣭Ᏻᐃᛶ➼ࡶ⪃៖ࡀᚲせ࡞ࡢ࡛㸪ࡇࢀࡽࢆྵࡵࡓヲ⣽࡞⢭ᗘࡣ௒ᚋࡢ᳨ウㄢ㢟࡛࠶ࡿ.
㸲㸬,PS9PS ᖖ᫬┘ど࡟ࡼࡿ 39 ືసデ᩿
㸲.㸯 Vmp, Imp ࡟ࡼࡿ㒊ศᙳࡢ᳨ฟ㸦ࢩ࣑࣮ࣗࣞࢩࣙࣥ㸧 ୖグࡢᡭἲ࡛

ᗘ⿵ṇࡋࡓ Imp2, Vmp2 ࢆ⏝࠸࡚㸪PV ࣔࢪ࣮ࣗࣝ㸪ࢫࢺࣜࣥࢢࡢ㒊ศᙳࡢ᭷↓ࢆ᳨▱࡛ࡁࡿࡇ࡜ࡀሗ

E࿌ࡉࢀ࡚࠸ࡿ 7-10).Fig. 5(a)(b)࡟㸪5 ࣔࢪ࣮ࣗࣝ࠿ࡽ࡞ࡿࢫ
ࢺࣜࣥࢢ୰ࡢ 1 ࡘࡢࢭࣝࡔࡅ࡟㒊ศᙳࡀ࠶ࡿሙྜࡢ I-V ≉ᛶ࡜ Vmp, Imp ࡢࢩ࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝࡢ୍౛ࢆ♧ࡍ.ࢩ࣑
࣮ࣗࣞࢩࣙࣥࣉࣟࢢ࣒ࣛࡣ Microsoftp VBA ࢆ⏝࠸࡚⮬సࡋ㸪ྛࢭࣝࡢ I-V ≉ᛶࡣࢲ࢖࣮࢜ࢻ≉ᛶࡢ⌮ㄽᘧ 14)ࢆᇶ
࡟㏫㟁ᅽ㝆అࢆ⪃៖ࡋࡓ Bishop ࡢᘧ 15)ࢆ⏝࠸ࡓ.ࢭࣝࡢ┤ิ᢬ᢠࡣཧ⪃ᩥ⊩ 1)ࡢ᪉ἲࢆ⏝࠸࡚ E-1B ࢫࢺࣜࣥࢢࡢᒇ
ෆ I-V ≉ᛶࢆᴫࡡ෌⌧ࡍࡿ್࡟タᐃࡋࡓ.ࢭࣝࡢࢩࣕࣥࢺ
᢬ᢠ࡜㏫㝆అ㟁ᅽࡣ⤖ᬗࢩࣜࢥࣥኴ㝧㟁ụ࡟᝿ᐃࡉࢀࡿ
ᴫ␎್࡜ࡋ࡚ࡑࢀࡒࢀ 100Ȑཬࡧ-20 V ࡜ࡋࡓ.ࣔࢪ࣮ࣗࣝ
୰ࡢࢭࣝᩘ࣭ࣂ࢖ࣃࢫࢲ࢖࣮࢜ࢻᩘࡣ Table 1 ࡢ E-1B ࢫࢺࣜࣥࢢࡢ್ࢆ⏝࠸ࡓ.
 㒊ศᙳ࡟ࡼࡗ࡚ Fig. 5(a)(b)ࡢࡼ࠺࡟ I-V ≉ᛶ࡟ẁᕪࡀ⏕ࡌ࡚ P-V ≉ᛶࡶኚ໬ࡍࡿࡓࡵ㸪Vmp ࡜ Imp ࡀኚ໬ࡍࡿ.㒊ศᙳࡀࢭࣝ㠃✚ࡢ⣙ 5%ࡲ࡛ࡣ Imp, Vmp ࡟࡯࡜ࢇ࡝ኚ໬ࡀぢࡽࢀ࡞࠸ࡀ㸪⣙ 5%࠿ࡽ 17%ࡲ࡛ࡣ Fig. 5(c)࡟♧ࡍࡼ࠺࡟Imp ࡀῶᑡࡋ࡚ Vmp ࡀቑຍࡋࡓ.18%௨ୖ࡛ࡣ᭱㐺ືసⅬࡀప㟁ᅽഃࡢࣆ࣮ࢡ࡟⛣ືࡋ࡚ Vmp ࡀపୗࡋ㸪Imp ࡣᙳ↓ࡋJournal of Japan Solar Energy SocietyFig. 4 Daily averages of Pmax2/G of the (a) E-1A string and (b)W-1C string at various levels of irradiance G.
㸲.㸰 Vmp, Imp ࡟ࡼࡿ㒊ศᙳࡢ᳨ฟ㸦ᐇド㸧(A)᪥ἐ๓㸪༡ഃࡢኴ㝧㟁ụ࠿ࡽࡢ㒊ศᙳ
E-1B ࢫࢺࣜࣥࢢࢆ⏝࠸࡚ Fig. 6(a)࡟♧ࡍࡼ࠺࡞㒊ศᙳ᳨ฟࡢᐇドࢆ⾜ࡗࡓ.ୖ㏙ࡢ᪉ἲ࡛ 25Υ࡟ᗘ⿵ṇࡋࡓ

Vmp2 ࢆᶓ㍈࡟㸪Imp2 ࢆ⦪㍈࡟ࣉࣟࢵࢺࡋࡓࡶࡢࢆ Fig. 6(b)࡟♧ࡍ.E-1B ࢫࢺࣜࣥࢢ࡟ࡣ෤Ꮨࡢ᪥ἐ๓㸪Fig. 6(a)"A"࡟
♧ࡍࡼ࠺࡟㸪༡ഃࡢኴ㝧㟁ụ࠿ࡽࡢ㒊ศᙳࡀ⏕ࡌࡿ.ྠࡌ
᫬㛫ᖏ࡟ Fig. 6(b)ࡢ"A1"࡟♧ࡍࡼ࠺࡟㸪Vmp2 ࡀ⣙ 10 V ቑຍࡋ࡚࠸ࡿࡇ࡜ࡀほࡉࢀࡓ.᫬㛫ࡀ⤒㐣ࡋ࡚㒊ศᙳࡢ㠃✚ࡀ኱ࡁࡃ࡞ࡿ࡜㸪"A2"ࡢࡼ࠺࡟ Vmp2 ࡀᛴ⃭࡟పୗࡋࡓ.
ᙳ↓ࡋ≧ែ࡟ẚ࡭࡚ Vmp2 ࡀ⣙ 20 V పୗࡋ࡚࠾ࡾ㸪ࣂ࢖ࣃࢫࢲ࢖࣮࢜ࢻ 2 ಶࡀືసࡋࡓྍ⬟ᛶࡀ࠶ࡿ.᭦࡟᫬㛫ࡀ⤒− 48 −

Vol.48, No.3, 2022

Performance inspection and diagnosis of PV modules and strings by continuous monitoring of Imp and Vmp㐣ࡋ࡚᪥ἐ๓࡟ࢫࢺࣜࣥࢢࡢ኱㒊ศࡀᙳ࡟࡞ࡿ࡜ Vmp2 ࡀᙳ↓ࡋࡢ್"A3"࡟ᡠࡗࡓ.ࡇࡢ㒊ศᙳࡣ Fig. 5(a)࡜↷ᗘࡸᙳ࡟࡞ࡿࢭࣝᩘࡀࡸࡸ␗࡞ࡿࡶࡢࡢ㸪Vmp2 ࡢቑῶࡀ Fig.
5(c)࡜ᐃᛶⓗ࡟୍⮴ࡋ࡚࠾ࡾ㸪Vmp2, Imp2 ࡟ࡼࡗ࡚㒊ศᙳࡢ

DB᳨ฟࡀྍ⬟࡛࠶ࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ.

AImp2 (A)

E%

$
$

$

Vmp2 (V)Fig. 6 (a) Experimental configuration and (b) results of therelation between the Imp2 and Vmp2 when the E-1B string ispartially shaded.
(C)ୗⲡࡢᡂ㛗࡟ࡼࡿ㒊ศᙳ
W-1D ࢫࢺࣜࣥࢢ࡟࠾࠸࡚㸪ୗⲡࡢᡂ㛗࡟ࡼࡗ࡚ࣔࢪࣗ
࣮ࣝ࡟㒊ศᙳࡀ࡛ࡁࡿ๓ᚋࡢ Imp ࡜ Vmp ࡢ㛵ಀࢆ Fig. 7(a)(b)࡟♧ࡍ.ᅗ୰㯮༳ࡣᗘ⿵ṇ๓ࡢ⏕ࢹ࣮ࢱ㸪㉥༳ࡣ 2ႏ࡟ᗘ⿵ṇࡋࡓࢹ࣮ࢱ㸪㟷◚⥺ࡣ㒊ศᙳࡀ↓࠸᪥ࡢᗘ⿵ṇࢹ࣮ࢱࡢ඾ᆺ್࡛࠶ࡿ.㒊ศᙳࡀ↓࠸ᮇ㛫ࡣ Fig. 7(a)㉥༳ࡢࡼ࠺࡟ Imp ࡜ Vmp ࡢ㛵ಀࡣ࡯ࡰ୍ᐃࡔࡀ㸪ୗⲡࡀᡂ㛗ࡋF࡚ࣔࢪ࣮ࣗࣝୗ➃ࢆ㉸࠼ࡿࡶࡢࡀቑ࠼ࡿ࡜㸪Fig. 7(b)ࡢࡼ
࠺࡟㸪኱㒊ศࡢࢹ࣮ࢱ࡛ Vmp2 ࡀ㟷◚⥺࡟ẚ࡭࡚ቑຍࡋ㸪୍㒊ࡢࢹ࣮ࢱ࡛ࡣῶᑡࡋࡓ.ࡇࢀࡽࡶ Fig. 5(c)ࡸ Fig. 6(b)࡜ྠᵝ࡟㸪㒊ศᙳ࡟ࡼࡿ Vmp2 ࡢቑຍཬࡧపୗ࡟㉳ᅉࡍࡿࡶ
9ࡢ࡜᥎ᐃࡉࢀࡿ.Fig. 7(b)࡛ࡣ Vmp2 ࡢࡤࡽࡘࡁࡀ Fig. 6(b)ࡸ
Fig. 7(a)ࡼࡾ኱ࡁ࠸୍ᅉ࡜ࡋ࡚㸪ୗⲡ࡟ࡼࡿ㒊ศᙳࡢᙧ≧ࡀ」㞧࡞ࡇ࡜࡜㸪㢼࡟ࡼࡗ࡚ᙳࡀ᣺ືࡋ࡚ᮏ◊✲࡛⏝࠸ࡓ
10 ⛊㛫ࡢᖹᆒ᫬㛫ෆ࡟ኚືࡋ࡚࠸ࡿࡇ࡜ࡀ⪃࠼ࡽࢀࡿ.
௨ୖࡢࡼ࠺࡟

Fig. 5

Simulation results of (a) I-V curves, (b) P-V curves, andᗘ⿵ṇࡋࡓ Vmp2, Imp2 ࡟ࡼࡗ࡚㸪」ᩘࣔ

ࢪ࣮ࣗࣝࡀ┤ิ᥋⥆ࡉࢀࡓ PV ࢫࢺࣜࣥࢢࡢഹ࠿࡞ᛶ⬟ኚ(c) Vmp and Imp of a PV string, which is comprised of 5 serial໬ࡀ᳨ฟ࡛ࡁ㸪㒊ศᙳࡢⓎ⏕ࡶᩄឤ࡟᳨ฟࡍࡿࡇ࡜ࡀ࡛ࡁ

modules. One of the modules has partial shading on one cell.

ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓ.᭦࡟ࣔࢪ࣮ࣗࣝୖࡢởࢀࢆᶍࡋࡓᑠࡉ࡞ᙳࡸ㸪㒊ศⓗ✚㞷࡟ࡼࡿ㒊ศᙳ➼࡟ࡼࡿ Vmp2 ࡢ(B)ከᩘࡢࢭࣝ࡟ரࡿ㒊ศᙳቑῶࡶᩄឤ࡟᳨ฟ࡛ࡁࡿᐇ㦂⤖ᯝࡀᚓࡽࢀ࡚࠸ࡿ 10).ᙳ↓Fig. 6(a)ࡢ"B"࡟♧ࡍࡼ࠺࡞㸪ࣔࢪ࣮ࣗࣝ୰ࡢከᩘࡢࢭࣝࡋࡢ≧ែࡀᇶᮏ୍࡛㒊ࡢ᫬㛫࡟㒊ศᙳࡀ⏕ࡌࡿሙྜ࡟ࡣ࡟ே≀➼࡟ࡼࡿ኱ࡁ࡞㒊ศᙳࡀᛴ࡟⏕ࡌࡓሙྜ࡟ࡣ㸪Fig.

Fig. 6, 7 ࡢࡼ࠺࡞ Vmp2, Imp2 ࡢቑῶ࡛㒊ศᙳࢆデ᩿࡛ࡁࡿ.

6(b)ࡢ"B"ࡢࡼ࠺࡟ Imp2 ࡣ࡯ࡰ୙ኚ࡛ Vmp2 ࡀ⣙ 30 V ῶᑡ࡯ࡰᖖ᫬㒊ศᙳࡀ⏕ࡌ࡚ᙳ↓ࡋ≧ែࡢ Vmp2, Imp2 ࡀ᫂☜࡟

ࡋࡓ.3 ಶࡢࣂ࢖ࣃࢫࢲ࢖࣮࢜ࢻࡀ✌ാࡋࡓ࡜᥎ᐃࡉࢀࡿ.

ᐇࡇࡢሙྜ Vmp ࡢቑຍࡀᐇ㦂࡛ほࡉࢀ࡞࠿ࡗࡓࡢࡣ㸪ᮏ◊✲࡛⏝࠸ࡓࢹ࣮ࢱᖹᆒ᫬㛫 10 ⛊௨ෆ࡟኱ࡁ࡞㒊ศᙳࡀᛴ࡛ࡁ࡞࠸ሙྜ࡟ࡣ㸪ࣔࢪ࣮ࣗࣝࡢ Vmp, Imp ᐃ᱁್࡜ࡢẚ㍑ࡀᚲせ࡟࡞ࡿ࡜ᛮࢃࢀࡿࡀ㸪ᮏ◊✲࡛ࡣヲ⣽ࡣᮍ᳨ウ࡛࠶ࡿ.

࡟⏕ࡌࡓࡓࡵ࡛࠶ࡿ.

Vol.48. No.3

− 49 −

太陽エネルギーYoshihiro HISHIKAWA, Masahiro YOSHITA, Yasuo CHIBA, Manit SEAPAN and Keiichi OKAJIMAཧ⪃ᩥ⊩D9PS,PS1) Y. Hishikawa, M. Higa, T. Takenouchi et al., " New STC Translation

9PS,PS

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the outdoor performance measurements of photovoltaic modules byusing the photovoltaic irradiance sensor", Solar Energy 211 (2020)
82-89
IEC 61724-1:2017, Photovoltaic System Performance - Part 1:4)

E. Garoudja, F. Harrou, Y. Sun et al. "Statistical Fault Detection5)ụୖ ὒ⾜㸪ᚋ⸨ ໏, ㇂ᮧ ᫭ኴ㑻㸪 ᪂⏣ ᬛᏊ㸪℧ᕝ 㝯௓,Monitoring.

E
9PS,PS3)

9PS,PS

in Photovoltaic Systems. Solar Energy 150, 485–499.
୸ᒣ ಙ୍㑻㸪⸨⏣ ┤ᕼ , すᕝ ┬࿃ࠕኴ㝧ගⓎ㟁ᡤ࡛Ⓨ⏕ࡍࡿ௨ୖࡢ⥙⨶ⓗゎᯒ࡜ࢫࢺࣜࣥࢢ┘ど࡟ࡼࡿ␗ᖖ᳨ฟᡭἲࠖ㟁ẼᏛ఍◊✲఍㈨ᩱ FTE-18-001-010, (2018) 31-40
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Fig. 7 Relation between the Imp1 and Vmp1 (black symbols) andmeasurement and diagnosis of the photovoltaic performance

Imp2 and Vmp2 (red symbols) of the W-1D string: (a) without

duringshading and (b) with partial shading by weeds.

(2020), Online
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MPPT operation ", Proceedings of JSES Conference

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1372

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diagnosis of photovoltaic string by operation voltage and current:✀㢮ࡢࢫࢺࣜࣥࢢࡢ ႏ࡟࠾ࡅࡿ Pmax ࢆ±1%⛬ᗘࡢ㧗࠸

Experimental verification" Solar Energy 230 (2021) 704-713

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ࢻᨾ㞀㸪PID ➼ᵝࠎ࡞⑕≧ࡀデ᩿࡛ࡁࡿ࡜ᮇᚅࡉࢀ9)㸪௒

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Journal of Japan Solar Energy Society− 50 −

Vol.48, No.3, 2022