arctech solar pv magazine webinar smart tracker design … · 2019-10-16 · arctech solar pv...
TRANSCRIPT
Arctech Solar pv magazine Webinar
Smart Tracker design
enabled by advanced testing
Next generation of wind tunnel
testing can increase confidence
for PV plant owners
October 2019
www.arctechsolar.comChina· India · Japan · America · Spain · Australia · Mexico· UAE
• Pioneers of wind engineering
• Wind effects on structures
• Most experienced wind lab in
solar structures
David BanksPrincipal at CPP Wind
Engineering Consultants
• BIG FIVE tracker companies
• Projects in all continents
• 7 international branches
• 3.8 GW tracker deployments
• 19 GW tracker + FT deployments
Pedro MagalhãesGlobal Director of Engineering
at Arctech Solar
• Design and Calculations of
unique and complex structures
• Independent engineers for some
of the largest PV plants in the
world
• Root cause analysis of trackers in
plants gone wrong
Bernd ZwingmannSenior structural engineer,
project manager at sbp
Pedro Magalhães
Wind LoadIs the key for
Tracker design
SkySmartIndependent row 2P tracker
SkyLineIndependent row 1P tracker
Arctech Tracker Uniqueness
Pedro Magalhães
Wind LoadIs the key for
Tracker design
Best for bi-facial modules
Fit for undulated terrain
Spain | 50MW | SkySmart
SkySmart – 2P Tracker
Pedro Magalhães
Wind LoadIs the key for
Tracker design
Less challenging design for wind
Brazil | 90MW | SkyLine
Lowest product cost
SkyLine – 1P Tracker
Pedro Magalhães
Wind LoadIs the key for
Tracker design
PV Module | Tracker | Inverter
eBOS | Substation | Civil
EPCOwn engineering
DeveloperIE \ TA #1
OwnerIE \ TA #2
Insurance
FinancierIE \ TA #3
Place to Place
Project to Project
Owner to Owner
EPC to EPC
Heterogenous knowledge
and requirements
Current Industry Challenge
Wind LoadIs the key for
Tracker designBernd Zwingmann
>5 GW
Credit:FilmfabrikSchwaben
Credit: Infinia coorperation
Credit: Johann Brodnig
Introducing Schlaich Bergermann Partner
7 of Top 10
Wind LoadIs the key for
Tracker designBernd Zwingmann
Design Requirements – Independent Engineer
2. Local Codes
Design guidance
Safety Factor
1. Wind Pressure
Wind Speed Gust/Mean,
Directionality
Return PeriodWind safety Factor,
Risk Factor
Terrain CategoryWind Profile,
Roughness
Air density
Site Specific
4. DAFs
Eigenfrequency
Modal Shape
Damping Ratio
3. Shape Coeffs
Moment (GC_M)
Force (GC_N)
Panel / Purlin (GC_P)
Tracker Specific
Wind LoadIs the key for
Tracker designBernd Zwingmann
Design Requirements – Independent Engineer
Aeroelastic Stability Analysis
Critical Wind Speed
Critical Harmonic Twist
Operation + Stow Strategy
Test = Tracker Properties
1. Wind Pressure
3. Shape Coeffs
4. DAFs
2. Local Codes
Input Parameters
Posts
Torque Tubes
Purlins
Panels
Drive
Dampers
Connections
Fasteners
Nonlinear Twisted Shape Analysis -STRESS
Wind LoadIs the key for
Tracker designDavid Banks
Wind Tunnel Test – State-of-the-art
Stress Calculations Level 1. Static Test
Force & Moment Coeffs.
Level 2. Dynamic Test
1.1 to 5 X higher
Wind LoadIs the key for
Tracker designDavid Banks
Wind Tunnel Test – State-of-the-art
Deflection Calculations Level 4. Aeroelastic TestLevel 3. 2D Smooth Flow & Sectional test
Wind LoadIs the key for
Tracker designDavid Banks
Wind Tunnel Test – State-of-the-art
Level 5. AeroPlus(Connects both Worlds)
Stress CalculationsLevel 1. Static Test Level 2. Dynamic Test
Deflection CalculationsLevel 3. 2D & Sectional Test Level 4. Aeroelastic Test
Different WorldsSequential and Not 100%
Realistic
Wind LoadIs the key for
Tracker designDavid Banks
AeroPlus
Level 5. AeroPlus (Connects Both Worlds)
GCR Height Span ZoneLoad
TypeGCM
Wing Moment
-0.07
-0.08
-0.09
-0.05
-0.06
-0.02
0.31 2.5 m 22.9 m
Do
wnf
orc
e
Pedro Magalhães
Wind LoadIs the key for
Tracker design
Same x-section and
embedment?
Same panel pressure
throughout?
*AEROELASTICITY – big word
Applies to Stability, Stow & Deflection AND Stress
Hints for Stake holders
Raise the flag
Pedro Magalhães
Wind LoadIs the key for
Tracker design
*AEROELASTICITY – big word
*Applies to Stability, Stow & Deflection AND Stress
Still Stowing at 0 deg?
No additional damping?
Raise the flag
Hints for Stake holders
Pedro Magalhães
Wind LoadIs the key for
Tracker design
Conclusions
◼ Twisted Shape: Deflection and Stress
◼ UCR from full flexible models
◼ Join the Future with AEROPlus:
deflections and stress at the same time
Wherever your
projects are,
we are there too!
Want a Reliable Tracker?
Thanks
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Pedro MagalhãesGlobal Director of Engineering at Arctech [email protected]