Module Manufacturing Innovation Award ET Solar
Cell Optimiser Module “COM”
AS AN INNOVATOR that adopts maximum power point tracking chips, ET Solar developed COM that offers maximum power tracking of individual solar cell string on real-time basis and thus achieves cell string-level power optimization.
The product represents a significant enhancement from the conventional solution that is based on bypass diodes and offers power optimization only at the module-level. Therefore, PV systems using COM would not have module mismatch problems and could increase electricity output by up to 20%.
ET Solar’s stringent raw materials selection and robust production control ensure the product’s highly reliable performance, minimize hot spot induced system failures and extend system life. With excellent environmental adaptability, the product substantially decreases power loss caused by shading and soiling on module surfaces.
Furthermore, COM would also enable higher density for constrained installation space, and reduce cost of installation, operation & maintenance of the PV system.
JinkoSolar
JinkoSolar Smart Module
SMART MODULES which increase the energy yield by limiting the common power loss caused by shadowing. Critical module temperatures can be
achieved if one solar cell operates in reverse bios of its IV curve. In such cases a power loss drop can be attained at the shaded cell which is followed by temperature increase.
The temperature increases by operating the cell in reverse bios is defined as a hotspot. The hotspot is the major failor mechanism of solar PV modules.
Thanks to integrated solar cell optimizers hotspots are eliminated in JinkoSolar Smart Modules- that increases energy yields up to 20% compared to standard modules due to shadowing.
We are the only company offering 3 smart modules so our customers can choose which technology they prefer: Tigo Solaredge or Maxim- the described anti hot spot technology.
Shadowed modules produce less energy. As it is impossible to avoid shadows completely,clouds can always appear they are a big problem. Our Smart Modules reduce this effect and can increase the energy yields up to 20 % in comparison to regular modules.
Since shading is not a problem for smart modules it is possible to place more modules in a space. For example you dont have to work widely around chimneys. It is more efficient and looks better. The monitoring tools offer security.
LG Electronics Deutschland GmbH
MonoX ACe
THE MonoX ACe from LG Electronics is a breakthrough by combining solar module and inverter for an alternating current (AC) power output (220 V). The high-
efficiency solar module rated 300 W has included an inverter/micro-inverter which is permanently installed at the back side of the module.
This inverter directly converts the direct- current (DC) power from the solar module into alternating current (AC) power.
With the inverter on the backside the known junction box with the bypass diodes is also included and can be saved in production.
The usual installation of an external micro- inverter is not necessary any more as it is already integrated in the junction box of LG’s AC module.
The approach of the new LG Electronics AC Solar Module differentiates in three topics.
a) For the string inverter design the solar module with the lowest current determines the performance of the string. With the micro-inverter each solar module contributes its own maximum performance to the system.
b) With the micro-inverter there is no need to spend material, costs, and time to install the individual inverter for the module as it is already permanently installed at the module.
c) The micro-inverter of the LG Electronics AC Solar Module can deliver from the DC input power (280 W) the same amount of AC output power (280 W), the world best output power. d) LG Electronics provides the total solution (i.e. module + integrated microinverter) and fully warrants the total system.
This reduces purchasing complexity for LG Electronics customers as a “one stop shop.
Issue IV 2014 I
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