Maxim Submodule Optimizers...Maxim Standard Module P-V Curves V OC,MAX 35V V OC,MAX 43V Design...
Transcript of Maxim Submodule Optimizers...Maxim Standard Module P-V Curves V OC,MAX 35V V OC,MAX 43V Design...
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Maxim Submodule OptimizersResidential and Commercial DC Optimization
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Submodule Optimization
MaximOptimizer per 24 cells
Simplicity Factory installed, no added system components or complexity
Performance Three MPPT per module for granular performance optimization
Value Reduce Capex and LCOE with longer strings and mismatch recovery
Reliability Technology proven over 20 years in mission critical applications
ConventionalBypass Diode per 24 cells
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Limited By the Weakest Cell
Deep MPPT Granularity
• Conventional PV Modules are current limited by the weakest cell
• Shaded, Soiled, Cracked, or Aged Cells weaken the entire string or are bypassed
• Maxim Optimizers mitigate mismatch for up to 30% more power in a variety of challenged conditions
Each Cell-String Optimized
100W+100W-5W=195W 100W+100W+50W=250W
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Flexible PV System Design
• Residential Flexibility> String modules of different orientations in series
> Combine strings of different length on a single MPP channel
> No external boxes, gateways, trunk cabling, or network communications
• Commercial> Increased number of modules per string; reduce homeruns
> Tighter row pitch with minimal row-shade losses
> Choose simplest stringing method without performance penalty
• Shade and Soiling Tolerance> Design with fewer constraints to shading objects
> Reduce cleaning and maintenance requirements
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Residential System Design Flexibility
Parallel Mismatch Operation Multiple Mounting PlanesSeries Mismatch Operation
• Distributed MPPT enables flexible PV site design
• No performance penalty design; use the “easiest” installation
Directly combine strings of different length
i.e. 10 panels in parallel with 12: +5% energy increase
Series connect panels facing different directions
i.e. East panels in series with West: +12% energy increase
Series connect panels of different tilts
i.e. 10° panels in series with 25°panels: +1.6% energy increase
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Longer Strings
• Limit 60-cell module output to 35V across all temperatures and irradiances
• Enables more modules on small systems and fewer strings on large systems
• Longer strings amortize fixed costs over more kW and enable lower effective $/W
Enables 20-35% Longer StringsVoltage Limiting
Maxim
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Module P-V Curves
VOC,MAX35V
VOC,MAX43V
Design Parameter Standard Maxim
Min Design Temp* -10°C --
Max VOC 43V 35V
# Modules Per String
600V 14 16
1000V 23 26
10-20% Longer strings enablessystem capex cost savings
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Voltage
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Commercial System Design Flexibility
• Mitigate effect of row shading caused by tight row pitches
• Install more modules on area constrained systems
• Enables 10-20% denser rooftop systems with no performance penalty
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Ground Coverage Ratio
Energy Production vs Density
Standard System +1-2% Energy
High Density System+5-10% Energy
Solar CellOptimizer
Conventional or Panel Optimizer
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Mismatch Tolerance
• Many conditions unexpectedly and severely degrade system power production
• Relax O&M requirements and impact of unforeseen environmental influences
Shade MitigationSoiling Patterns
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Shaded Performance Example
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• Two palm trees equally affecting MAXIM and Panel Optimizer strings
• Maxim submodule optimizer outperforms panel optimizer by > 4%
String Energy (kWh)
Maxim 21.7
Other MLPE 20.8
Gain 4.3%
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Installation Simplicity
• No external boxes to install or communication networks to debug
• Broad compatibility with string inverters from all manufacturers
No Add-On Components Inverter Compatibility
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Modeling with Maxim Submodule Optimizers
• System design with Maxim optimizers is a built-in to the industry leading modeling tools
Versions 2018R6 and later Later
Versions 6.0 and later
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Benefit
Triple MPPT Per Module ✓
Increase String Length ✓ ✓ ✓
Increase Ground Coverage and Density ✓
Eliminate Hot Spots & Diode Failures ✓
Broad Inverter Compatibility ✓ ✓
Proven High Reliability ✓
Factory integrated, zero install time ✓ ✓
Competitive Comparison
The Only Module Integrated Optimization Solution
Reduce Installation Costs, Improve Performance, Minimize Investment Risk
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