SolarEdge

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Technology Overview - SolarEdge


Advantages for Installers & System Integrators

In addition to harvesting maximum power from the PV system, SolarEdge offers unique benefits to installers and integrators of residential systems, commercial roofs and PV fields:

 

  • Faster and easier design through longer strings that enable less wiring
  • Opportunity to install more modules per given space due to removal of traditional stringing constraints
  • Immediate installation feedback for each module for faster site commissioning
  • Reduced operation and maintenance costs due to effective module-level monitoring
  • Full safety solution - electrocution and fire risks are eliminated with safe voltages during installation and maintenance
  • Scalability - adding modules to existing installations is straightforward so systems can be expanded as needed, at any future time (within system requirements)
  • For existing PV systems, it is possible to retrofit an aging PV system by adding power optimizers in order to harvest more power while benefiting from faster return on investment


The SolarEdge System Architecuture & Benefits

The SolarEdge three-fold architecture consists of power optimizers which perform module-level MPPT, a highly reliable Solar PV Inverter, and a portal for module-level monitoring and yield assurance. The power optimizer is connected by installers to each PV module or embedded by module manufacturers, replacing the traditional solar junction box.  The system features the following technological advancements:


Module-level MPPT:

A highly-optimized algorithm ensures that each module is constantly kept at maximum power point (MPP), preventing energy losses due to module mismatch or partial shading conditions. In addition to the energy benefit, module-level MPPT is faster than MPPT performed by a centralized inverter. Allowing the modules to better react to changes in sun irradiance and temperature and minimizing power loss on cloudy days when changes in irradiance are frequent and fast, leads to increased energy yield. The DC-DC conversation employed by each power optimizer is highly efficient with the highest known peak efficiency in the industry of 99.5%.


Fixed String Voltage:

A unique SolarEdge innovation, the string’s voltage is maintained at a fixed optimal point for DC to AC inversion, regardless of a strings length or environmental conditions. The fixed string voltage enables an easier design with uneven string lengths on multiple facets for full roof utilization, optimal inverter efficiency, reliability and reduced installation cost.


Advanced Power-Line-Communication:

All power optimizers continuously measure and communicate a range of module-specific status indicators.  Performance data is transmitted from the power optimizer to the inverter over the existing DC power lines (PLC), eliminating the need for additional wiring. In the inverter, a built-in communication gateway with LAN and wireless connectivity options enable easy broadband connection to a remote monitoring server.


ASIC Technology:

One key factor in increasing the efficiency and overall reliability of the power optimizer is the elimination of discrete components and their integration into Application Specific Integrated Circuits (ASICs). The high-voltage, high-current, analog blocks are implemented within the high-voltage Silicon-On-Insulator (SOI) process, geared specifically for harsh-environmental conditions such as those of the automotive industry. The logic-based digital blocks are implemented within the mature, extremely high-yield process developed by the world's largest semiconductor fabrication plant.

IndOP™:

The independent optimization (IndOP™) technology allows power optimizers to be installed without the need for additional interface hardware and to operate directly with any inverter. This technology enables easy and cost efficient retrofit of existing installations with power optimizers, and allows module-manufacturers to ship modules optimized by SolarEdge without any interface hardware.


Module Add-On / Retro fit Power Optimizers


Intersolar Award Winner 2012

The SolarEdge module add-on power optimizer is connected by installers to C-Si and thin-film modules. Ease of installation is completed by simply clipping the power optimizer to the module frame or by attaching it to the mounting rail with an optional Mount Kit. The add-on power optimizer is compatible with all framed modules supplied by Frankensolar to ensure any solution may be Optimized by SolarEdge. The SolarEdge power optimizer optionally attaches to the roof mounting rails with the Frankensolar "Optimizer Mount Kit" which keeps on-roof labor and mounting costs to a minimum.

Click HERE for more on Optimizers by SolarEdge