workshop: the role of technology and o&m in protecting ... · pv operations europe 05.03.2020...
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PV Operations Europe05.03.2020
JinkoSolar
WORKSHOP: The role of technology and O&M in protecting assets
Facts and Figures
Shipment
# 1
Market
Share
12.8%
Bankability
# 1
Delivered
48GW
Cell
EfficiencyRecord
24.58%
6 Global Factories | 34 Sales Offices | 80+ countries where Modules are delivered | 13.000+ Employees
Vertically integrated Production
Source: PV Magazine 14 PV trends for 2019https://www.pv-magazine.com/2018/12/31/14-pv-trends-for-2019/
Guaranteed Quality along
the entire Value Chain
Best Supply Chain
Management with First
Class components
Optimized Cost structure
due to >10 years
experience
HC Technology
Half-cell
Full-cell
P loss = I2 * Rs
Electrical current (i) flowing on busbar is
halved
Resistive losses in a HC
modules is ¼ of a full
sized cell
Avg. 7Wp power up
compared to Cheetah
full-cell
Lower Hot-Spot Level, Despite Higher Wp
CellShading
condition
Maxim
temperature
from test
Delta
Mc-Si
½ cell 115.4 /
½ half cell 96.0 19.4
Mono
PERC
½ cell 122.4 /
½ half cell 98.0 24.4
Halved Current
Lower Power
dissipated
Around 20°C lower
hot spot
Mitigated risk for
system operation
Half-cell Full-cell
Micro-Crack Impact Mitigation
Half-cell
Smaller cell area reduces by 50% the potential impact of micro-cracks
50% lower current path with MBB tech. compared to 5BB
Decreases the power loss risk induced by micro cracks
Tiling Ribbon (TR) Technology
Pressed shape wires to ensure reliability
Special design of the cell overlap region
EVA fills the overlapping region giving
Excellent buffer effect to ensure reliability
Structure diagram of overlapping area
CellEVA Ribbon
The importance best-quality materials
© DuPont 2019
Best-practice guidelines
Lost Quality Value Chain
When not every step is under control the risk of damages and losses raises
Connector compatibility
‣ PV Connectors have to be used according to IEC 62548 TS
‣ IEC 62548 TS: Design requirements for PV systems
“…connectors, that are connected in one PV System, have to always be the same connector type from the same connector Manufacturer”
‣ PV Module Installation Manual
‣ local and national nationale regulations need to be observed
‣ If not observed, the risk of losing module warranty applies
© Stäubli 2018
Cleaning and Hot-Spots
➢ Cleaning is needed primarily to avoid damages to PV modules caused by materials
thermal fatigue and accelerated degradation
➢ Hot-spots induced by excessive soiling can reach critical temperatures for the
polymers used for PV modules construction
Cleaning and Hot-Spots
… when cleaning brings more
damages than benefits …
Cleaning methods should fulfill
the Manufacturer’s guidelines or
be approved by the
Manufacturer
LCOE: Levelized cost of Electricity