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Smart Panel
Module Level Power Electronics (MLPE)
72 Cell 320W Crystalline Silicon Photovoltaic Panel
Integrated with DC Optimizer and Intelligent Disconnect
Today, energy infrastructure
is evolving into adaptive,
intelligent networks. Powering
these networks requires unique
smart energy products that
can meet the industry’s rapidly
evolving requirements.
Celestica enables intelligent,
reliable and flexible smart energy
product solutions that drive
complex power architectures,
helping you keep pace with
industry demand, meet quality
and reliability requirements
and speed time-to-market.
Celestica’s Module Level Power Electronics (MLPE) Smart Panel combines
high performance solar modules with an integrated Solantro chipset-based
DC Optimizer within the standard form factor junction box (jbox) - providing
increased power controls and intelligent disconnect upon detection of current
loss. This addresses the Rapid Shutdown requirements of NEC2014 and other
national norms and standards.
The evaluation unit combines the required sensing and MOSFET drive circuitry
for module optimization, intelligent disconnect operation and cool sub-string
bypass without the need for additional external communications equipment or
minimum string length restrictions. It supports a wide range of PV-panel power
specifications.
Benefits
Increased energy harvest over standard string-inverter
MPPT based systems
Compensates losses due to mismatch, shading, soiling, temperature
gradients and aging
Eliminates high PV string voltages during installation, string disconnect
in case of maintenance/emergency (fire) or islanding event
No external communications equipment needed
Higher reliability, lower temperature and lower loss than with
traditional bypass diodes
Increased safety for installers, fire-fighters and repair-persons due to
elimination of voltage on PV-string when AC or DC is disconnected
www.celestica.com
Smart Panel Module Level Power Electronics (MLPE)
Features
Applications
•Intelligent Solar-PV
Disconnect Switch
•Distributed, Intelligent PV
System Optimization
•Replacement of bypass
diodes with low-loss
MOSFETs
Figure 1. DC-POD Junction Box
Reference Platform
Figure 2. DC-POD Power Manger
Functional Diagram
•Highly integrated design utilizing Solantro chipset (APM + MAXC)
•Extremely efficient Max Power Point Tracking (MPPT) software
controlled algorithm
•Cool bypass for string and sub-string isolation, eliminating diode losses
•Disconnect smart shutdown
•System installation with no additional connections or cabling
Figure 2 shows a high-level functional diagram of the circuitry within
the DC-POD. It is based on the Solantro SA1001 – APM and SA3101 –
MAXC ICs and provides all of the sense points and MOSFET drivers
required for the critical elements within the design. The power MOSFETs
Q1 and Q2 provide dual functionality depending on the DC-POD state
of operation. In the ”Connected” state when power-conversion is being
performed and the MPPT control loop is operating, both transistors
function together as the high and low-side switches of a synchronous
buck converter. In non-operational states transistor Q1 opens,
disconnecting the PV-module from the string, and transistor Q2 closes,
bypassing the PV-module with a very low voltage drop across this low
Rdson transistor.
Figure 2 also shows the substring connections to the PV-module. Across
each of these substrings, a parallel MOSFET (STR1, STR2 and STR3) is
connected to provide substring bypass functionality in the event that
substring is shaded and not able to provide enough power to operate.
Replacement of the bypass diodes with low-loss MOSFETs dramatically
reduces the power dissipation when the substrings are bypassed. Heat
generation by traditional axial bypass diodes operating in bypass mode is
one of the more common module failure points.
To maximise power harvest, and provide the highest degree of safety,
every PV-module within the PV-array branch string should be equipped
with a DC-POD-enabled PV Junction Box. Note, however, that the
system will operate correctly with co-mingled DC-POD equipped and
non-DC-POD equipped PV-modules within the same string. In this case,
the energy harvest will be reduced, and these non-POD equipped PVmodules will continue to generate potentially dangerous voltages even
when all DC-PODs have disconnected their PV-modules for safety.
Parameter
Specification – DC-POD
PV Module Power Range
50W to 350W
MPPT Operating Range
10V to 60V
Maximum Output Current
10A
Efficiency
>99%
C72NxxxV-CT† 72-Cell Mono-Crystalline Module Series
Figure 3. Module Diagram
TE Solarlok
MC4+ style
C72NxxxV-CT† 72-Cell Mono-Crystalline Module Series
Module Dimensions (mm)
1957 x 992 x 50
Number of Cells
72 pieces (6 x 12) connected in series
Cell Type and Size
3BB Mono-crystalline (156mm x 156mm)
Module Weight (kg)
23.5 and 27.0 options available (glass dependent)
Max System Voltage
600V or 1000V UL/ULc options, and 1000V IEC, CAN/CSA
Temperature Coefficient of Voltage (β)
-0.35±0.01 % / oC
Temperature Coefficient of Current (α)
+0.05±0.02 % / oC
Temperature Coefficient of Power (γ)
-0.48±0.02 % / oC
Normal Operating Cell Temperature (NOCT)
47°C ±2°
Fuse Current
15A
Efficiency Reduction at 200W/m², 25°C
<5%
Limiting Reverse Current (Ir)
8.7A
Mechanical Load
±2400Pa, +5400 Pa
Hailstone Impact Resistance
25mm @ 80 km/h
Junction Box/Cable
IP 65 and IP67 rated; 4.0mm² Universal PV Wire, 1000mm or 1200mm min. cable with TE
SOLARLOK® or MC4+ style connectors
Basic Structure
Front
Tempered Solar Patterned Glass; 3.2 and 4.0mm options; with/without AR coating
Back
Composite Film
Frame
Anodized Aluminium Alloy
Refer to module installation instructions for maximum loading conditions.
† C = colour code – W (default): white backsheet and silver frame, B: black backsheet and frame, M: white backsheet and black frame
T = connector type – M (default): MC4 style (Rated 600V UL / 1000V IEC-CAN/CSA); S: TE Solarlok, (Rated 600V UL / 1000V IEC-CAN/
CSA); T: MC4 style (Rated 1000V UL and IEC )
IV parameters are rated at Standard Test Conditions (Irradiance of 1000 W/m², AM 1.5G, cell temperature 25²C). NOCT is measured at
800 W/m², 20 deg. C ambient, and 1 m/s windspeed. Specifications are subject to change without notice. Celestica reserves right of final
interpretation and revision on this datasheet.
B Grade modules are available on request.
www.celestica.com
Smart Panel Module Level Power Electronics (MLPE)
For More
Information
Contact:
Alexei Miecznikowski
+1 416-448-5686
[email protected]
Characteristic
Nominal
Power
Voltage
Voc
Current
Isc
Voltage
Vmp
Current
Imp
Units
Watts
Volts
Amps
Volts
Amps
C72N290V
290
44.4
9.0
35.3
8.3
C72N295V
295
44.5
9.0
35.6
8.4
C72N300V
300
44.6
9.1
35.8
8.4
C72N305V
305
44.7
9.1
36.1
8.5
C72N310V
310
44.8
9.1
36.4
8.6
C72N315V
315
44.9
9.2
36.6
8.7
C72N320V
320
44.9
9.2
36.9
8.7
C72N325V
325
45.0
9.3
37.2
8.8
C72N330V
330
45.1
9.3
37.4
8.8
Certifications and Standards
IEC 61215, IEC 61730, UL1703
CAN/CSA-C61215-08
Application Class A
ULC/ORD-C1703-01 CEC
CAN /CSA-C22.2 No.61730
Safety Class II
PV Module: Celestica C72N320
12
Cells temp. = 25°
Current (A)
10
Incident Irrad. = 1000 W/m2
8
Incident Irrad. = 800 W/m2
6
Incident Irrad. = 600 W/m2
4
Incident Irrad. = 400 W/m2
2
Incident Irrad. = 200 W/m2
0
10
20
30
Voltage (V)
321.4 W
255.6 W
189.7 W
124.2 W
59.9 W
40
50
The items described in this publication have not been released to commercial production. They are supplied ``AS IS
WITH ALL DEFECTS``. Not all parameters have been tested. The information is being provided on an advanced basis,
and Celestica or Solantro may not release a corresponding product to sale. Celestica or Solantro assumes no liability
for errors, or for liability arising from the application or use of any such information or items
© Copyright Celestica Inc. 2014 All rights reserved. ™ CELESTICA,
FIREBALL & Design and CELESTICA & FIREBALL Design are existing,
pending or registered trademarks of Celestica International Inc.,
used under license. All trademarks and registered trademarks are the
property of their respective owners.
J-F-070214