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09.02.2018
 
A combined Energy solution - Alfons container

Alfons solution Alfons container

Alfons container Alfons container

A combined Energy Solution - Alfons Container

GWL/Power supplied the Winston Battery cells for the integrated hybrid energy solution called “Container Alfons”.  This solution integrates the energy from three sources - solar, wind and a backup diesel generator.

Be sure to contact GWL/Power for more details and for the reference to this and similar projects. 

11.06.2017
 
The GridFree inverters for the energy solutions

 

The GridFree inverters for the energy solutions

The 1000W and 2000W GridFree Smart inverters for energy self-generation. 

13.02.2017
 
Multiple solar panels - use whatever you have

 

Multiple solar panels - use whatever you have

It is ever more easy to get a second hand (or refurbished) solar panels. It is simple to use these for your energy solutions. Its is possible to combine various panels for one installation.

For grid-tied installations, we suggest to use the variety of micro-inverters we offer

For off-grid installations, we suggest using the MPPT tracking charge controllers

13.10.2016
 
The Connection of Solar Panels

 

The Connection of Solar Panels

When you connect the panels in series, you connect the MC4 connector of one panel to the other. The voltage of the panels will increase. The current will be the same.  

12.07.2016
 
A solar powered ebike - possible?

 

A solar powered ebike - possible?

I wish to make an ebike powered by solar panels in the wheel. What do you think about this?

It is a nice idea. We are always happy when our customers bring about some innovative ideas.

For the solar panels in the wheel (as suggested by the picture) we come to this calculation:

  • Taking the size of the rim 26", the diameter is 66 cm, making the flat area of the wheel some 0.34m2.
  • If you happen to fill this area with 60% by solar cells, you will get some 0.20m2 of solar panel flat space.
  • The regular solar panel is 1m x 1.6m making some 1.6m2 of the flat area. Such panels have typically about 260Wp of solar power rating. With 0.20m2 of the wheel, you will get the solar power rating of some 32Wp.
  •    ...more >>

27.06.2016
 
A simple off-grid installation (customer photo)

 

 

A simple off-grid installation (customer photo)

Making a solar installation is easy. Just 4 components needed: 1) solar panel(s), 2) the solar charge regulator, 3) the battery and the DC/AC inverter. 

GWL/Power has supplied the solar panels and the LS1024E PWM regulator.

What is correct:  the panels (80Wp small size panels) have the MPPT voltage approx 10V, this means two panels must be in series to get the voltage above the battery voltage (some 15V at max charge).

What is wrong: 1) there is no DC fuse on the battery…. whoops …. always use fusing!  2)shame on the shading: the panels are shaded by the solar cables and also by the battery. This is simply wrong…. the panels will not provide full power potential. Always avoid shading of the panels.

   ...more >>

18.05.2016
 
Some more inspiration - simple GridFree installations

 

Some more inspiration - simple GridFree installations

In fact it is so easy to make the GridFree installation at many places of your house, including the balcony of the housing complex. 

Get the idea for your own solar self-consumption (GridFree) installation.

18.03.2016
 
What solution do you suggest for a small 12V/40AH solar installation?

 

What solution do you suggest for a small 12V/40AH solar installation?

The solar panel (fig. 1) needs to be the 18V model (not the 36V - 60 cells or 40V - 72 cell model), for example the 150Wp model will work fine, providing some up 8 Amp charging current.

The fuses (fig. 2.) should be always connected to protect against short circuit. In this type of installations you can use the automotive 12V/24V fuses with 10 Amp rating (here for AWG)

Any question?  Just let us know.  We are here to help you.

13.03.2016
 
Using the infra-red camera to analyze solar panels

 

Using the infra-red camera to analyze solar panels

All customers using solar panels should perform a yearly inspection of the solar installation. With the help of the infra-red camera (thermo-camera), it is quite easy to detect the defective cells or other problems that are reflected as thermal irregularities. 

If you wish to get support for  the infra red camera monitoring, be sure to let us know.  We are here for you.

10.03.2016
 
Micro Inverter installation diagram - single phase (using YC500) 

 

Micro Inverter installation diagram - single phase (using YC500) 

A suggestion of the installation diagram for the micro-inverter installation.

Note: for small site installations the power rating in Europe is limited to 16Amp (some 3500 Watts) - this corresponds to 7 microinverters per one 16Amp wiring branch. Of cause for higher rated installations (e.g. in industrial buildings) there may be a higher number of inverters per single wiring branch.

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