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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. 

24.06.2015
 
What is the size of the frame of this panel: Flexible Mono 60 Wp?

Size of the frame (white stripe at the perimeter) is 14mm on the shorter side and 28mm on the longer side.

 

04.06.2014
 
How to make 4 kW solar system with inverter

There is a basic important question: The solar energy from the panels will be used  to sell to the grid? Or it will be used for own consumption?

If this is the case of sales of energy to the grid or its own consumption reduction, it is necessary to know that if 4kW is peak power value of solar panels, then it is highly probable that most of the time power will be significantly less. It strongly depends on sunlight specific conditions. If customer want to connect two solar panels to one microinverter, must take in advance that it is possible and will not damage the microinverter. It also depends on size of the panels and actual sunlight conditions. One microinverter can supply up to 250W power. If customer expect more from panel (or more panels if will connect them to one microinverter), than it would be wise to buy more microinverter to avoid that some power will be left unused.

Please check our GWL Blog for some ideas regarding Grid Free and micro-inverters:

http://gwl-power.tumblr.com/tagged/solar

http://gwl-power.tumblr.com/tagged/GridFree

   ...more >>

19.04.2013
 
The aging of solar panels

The aging of solar panels

Check our XLS calculaction tool to see the expected solar performance of the solar panels as influneced by the aging.

http://www.ev-power.eu/docs/web/GWL-Schutten-SolarPower.xls

14.04.2013
 
Home Solar Solutions

Home Solar Solutions

The photo shows the example of installing the household solar solution even at the blocks of apartment buildings.  Here the solar collectors are combined with thermal solar installation.

The GridFree solution can be also installed in the same way to allow microgeneration of energy to reduce the consumption of the energy from the grid.

13.02.2013
 
Put more panels on the residential high-rise buildings!

Put more panels on the residential high-rise buildings!

The large sun-facing walls on the high-rise buildings allow to make a solar installation with no need for ground space. The vertical installations are ideal for many installations in nothern parts of Europe where the sun is shining under low angles.

13.02.2013
 
Small Solar Installtions - From an Idea to a Reality

Small Solar Installtions - From an Idea to a Reality

Our customers come up with many ideas where to locate solar panels:

Hole in the building. This hole makes some sound when wind is blowing. (The architect was likely a deaf man.) The idea is to cover this hole - to block the wind and to get some solar yield.

The solar wall. Many building have walls that face the sun. It is easy to place the panels on such walls.

Solar panel shading. In summer the sun is shining inside the buildings. Try placing the panels on the top part of the windows to block the sunshine and get some free energy.

27.01.2013
 
Solar Radiation Maps for Europe and other countries

Solar Radiation Maps for Europe and other countries

The solar radiation maps for European Countries and other global locations.

The map of “Global Horizontal Irradiation” for Europe shows the potential for harvesting the free energy from the solar sunshine. The energy level for Europe are from 1850 kWh/m2 in south of Europe to 900 kWh/m2 and less in north of Europe.

Download here: http://solargis.info/doc/71

13.01.2013
 
ViewStar PWM Solar Charge Controllers

ViewStar PWM Solar Charge Controllers

Check the updated specifications and parameters for the ViewStar PWM controllers.

Three key advantages of these PWM controllers

  • Support multivoltage operation /12V, 24V, 36V, 48V/
  • Allow detailed voltage settings (voltage levels) over the user buttons
  • Have a LCD included to have easy monitoring of the installation

Additionally these PWM controllers support the charging of the LFP cells and battery pack.

ViewStar PWM Specification
http://www.ev-power.eu/docs/pdf/GWL/GWL-ViewStar-PWM-Spec.pdf

   ...more >>

26.12.2012
 
Micro-Inverter –  No Fear of Death

Micro-Inverter –  No Fear of Death

Standard PV installations with work with DC 400V to DC 800V. Total risk of electric shock and death ! ! !  

With Micro-Inverter working with DC 50V – 100% SAFETY - no risks of burns, shocks or deaths because of high DCa voltages.

Make your own solar instalation as safe as possible. Use only low voltage DC micro-inverters.

22.12.2012
 
FAQ: MicroInverter Questions and Answers

image

Question: Why do you recommend to use a 250Wp or even 280Wp solar panel with the MicroInverter, that has only 230W AC output power?

Answer: The solar panel specification (250Wp or 280Wp) is the peak power at the ideal condition of direct sunshine at 1000W/m2. On most installations this ideal condition will be present only few days in a year. Most of the time, the sunshine condition of the installation is worse than the theoretical maximum. That is why it is better to use a large size panel to utilize all power available from the MicroInverter. 

The MicroInverter works at the MPPT mode and it will draw only the maximal power up to its own maximal power specification.  This means that during the sunshine peaks the inverter takes only the energy it can process up to its hardware limits.

Hint:  in winter times it may be even possible to join together two (even three) solar panels (of the same specifications) in parallel to increase the real yield from the installation during the short and cloudy winter days.

   ...more >>

09.12.2012
 
The Micro-Inverter Safety and Operation FAQs

The Micro-Inverter Safety and Operation FAQs

Q: Can the Micro-Inverter work in off-grid mode (island mode)?

Answer: No. The Micro-Inverter is designed only as the grid-tied (or on-grid) inverter. It works simultaneously (in harmony) with the 230V AC grid.

Q: How will the Micro-Inverter behave when the grid is down?

Answer:  If the AC grid is turned off, perhaps because of fuse is blown, or there is some repair on the cables, the Micro-Inverter will shutdown immediately. This shutdown function is one of the parameters certified by EU standards for electric safety.

The shut-down function means the Micro-Inverter does not produce any electricity when the grid is turned off, even if the solar panels are at full sunshine.

The Micro-Inverter has the anti-islanding function and will not work without the AC grid voltage supplied.

Q: What will the Micro-Inverter do when there is short circuit on the AC power line?

   ...more >>

25.11.2012
 
Solar panels with 270Wp and 320Wp - ideal for any kind of solar installations

Solar panels with 230Wp and 280Wp - ideal for any kind of solar installations

Let the sun bring the power to you free of charge. The solar panels will help you to generate the electric energy at you location when-ever you have sun-shine. Check the details for the 270Wp and 320Wp solar panels.

19.11.2012
 
Solar cable 5m with MC4 connectors

Solar cable 5m with MC4 connectors

Ideal to connect solar panels (in series). Also one cable can be cut into two open-end cables to get the MC4 termination for solar regulators.

26.10.2012
 
EVDock at the eCarTec

EVDock at the eCarTec

We were showing the EVDock at the eCarTec 2012 in Munich.

26.10.2012
 
EVDock - promotion

EVDock - promotion

If you are interested to have your own EVDock, be sure to contact us for details. We will send you the special promotion price.

22.10.2012
 
Loading the EVDock for the eCarTec show

Loading the EVDock for the eCarTec show

The EVDock construstion was disassambled and loaded in VW Multivan for transporation to the eCarTec Munich

20.10.2012
 
Testing solar panels

Testing solar panels

We are testing a variety of solar panels to see the performance and to have real experience to benefit our customers.

Check our offer of solar panels.

19.10.2012
 
GWL/Sunny 280Wp 72 cells POLY

GWL/Sunny 280Wp 72 cells POLY

Check the specification of the GWL/Sunny high-power solar panel with 280Wp power.

 

19.10.2012
 
GWL/Power Electromobility October 2012

GWL/Power Electromobility October 2012

The electromobility in a daily use: every day we drive 200 to 350 km in electric cars. We power the cars by the electricity that we produce locally from solar panels. No need to pay for the gasoline, no need to worry about the price of the petrol in the future.

19.10.2012
 
Introducing the EVDock Solar CarPort

Introducing the EVDock Solar CarPort

The EVDock is 100% wooden CarPort to shield the car and protect it against direct sunshine, rain, snow, etc. It is designed as a self-construction kit that can be assembled by two people just in a few hours.

The roof can be made of solar panels so that the solar energy is harvested directly.

Keep in touch with us more more details on this exciting project.

12.09.2012
 
The GWL/Sunny Solar Panels - any simple solar solution for everybody

The GWL/Sunny Solar Panels - any simple solar solution for everybody

The GWL/Sunny panels are small size high performance solar panels that allow to have an easy installation. Check our offer for these panels at EVPOWER.EU.

08.08.2012
 
Small size solar panels - an easy transportation

Small size solar panels - an easy transportation

One of the advantage of the small size solar panels is the easy transporation. As seen from the photo the 110Wp and 140Wp panels can be easily placed ina small-sized car like Citroen C-Zero.  Mounting two panels in series you get the peak watt power as of the full sized panels (2x 110Wp = 220Wp, 2x 140Wp = 280Wp). Check our offer of the panels.

08.08.2012
 
Testing solar panels for performance

Testing solar panels for performance

We are testing a variety of solar panels to see their performance. You can check our offer for these panels here.

16.07.2012
 
GridFree - direct solar charging from FV power supplies

GridFree - direct solar charging from FV power supplies

The GridFree technology allows to harvest solar energy directly and simultaniously with the AC grid. The GridFree FV power generation reduces the comsumption of the electric power from the grid.  Check with us for more details on this exciting technology.

21.06.2012
 
LAN controller with the relay – your second brain

LAN controller with the relay – your second brain

The LAN controller is a very smart device that can help you to manage a lot of equipment based on the detection of measured values and a time schedule. It is possible to connect a variety of detectors or signal sensors.

The current status of the inputs can be monitored on-line over Internet using the web server. The settings of the LAN controller are made remotely over web page as well.  The status data can be also reported using the SNMP protocol. This allows to process statistics, get the history of events, etc.

In addition the LAN controller allows sending data using plain email. This means you can get the information to any PC or pocket device (e.g. smart-phone) without the need to check the web page.

   ...more >>

14.02.2012
 
PV panels for every roof! Become GridFree!

PV panels for every roof! Become GridFree!

The small PV installations and off-grid solutions and hybrid-grid solutions are getting more and more popular. The LFP batteries are proving as long-term energy power backup solutions. We are getting ready to launch some new and exciting products. Wait for more to come!

   ...more >>

06.11.2011
 
Solar charging test data - October 2011

 

Solar charging test data - October 2011

   ...more >>

02.10.2011
 
Harvesting the power of the sun

The charge graph
Two 217Wp panels
The battery pack

Harvesting the power of the sun

We have set up a new configuration to test the solar charging of LFP batteries. Two solar panels (217Wp each) are in a serial string to charge a 48V/90Ah battery pack made of 4 pcs of LP12V 90AH batteries.

During a sunny day in October, we are able to gain more than 2 kWh of energy from the 2 panels. (38Ah at 53V = 2kWh)

Our tests have a multiple purpose: to test the solar charging, to examine different solar controllers, to study the charging of the LFP batteries and finally to make a working solution to disconnect from the grid for ever.

   ...more >>

29.09.2011
 
Using solar chargers to harvest solar power

Using solar chargers to harvest solar power

We are testing different solar chargers to see their performance with the LFP battery packs.  Here is the summary of our tests:

Figure 1 - shows the initial charging of a completely empty 48V/20AH LFP battery pack. We were able to charge 25Ah of power. We are using two 217Wp solar panels in series. They provide the peak of 350W.

Figure 2 - shows the discharge of the 48V/20AH LFP battery pack until the low voltage level of 44.4V is reached. The discharge with is a resistive load, so the current changes at the beginning and decreases as the heat spiral warms up.

Figure 3 - shows the charging mixed with periods of discharging.

   ...more >>

02.05.2011
 
EVTraxer with Solar roof

EVTraxer with a “solar roof”

In a summer mid-cloudy day, one standard 220Wp panel provides about 150W of charging power. During a day it can charge up to 1kWh of energy. It is about 10km to 12km of driving range of a light-weight vehicle based on the EVTraxer platform.


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