The off-grid system based on the Xtender Power sets with MPPT charge controller is used to power a small remote building complex. The battery storage consists of durable tubular plate batteries.
The system was installed and put into operation by our local partner “Maison du Photovoltaique”.
For the power supply of a mobile phone charging station a Xtender Power Set Classic was installed in Sierra Leone. The project was initiated by the non-profit organization CVJM Roedinghausen. The installation was carried out with the help of local experts. The plant is running since August 2012 and has fulfilled the expectations of all stakeholders.
A high level tank at Rohrdorf/Meßkirch in the Swabian Alps, is used to supply drinking water to surrounding communities. The tank itself is located in an outside section and thus not connected to the public grid. To control the water distribution and to secure the operation of the system, a continuous and autonomous power supply of 24 V DC over the year is an indispensable requirement.
To cope with this requirement, 10 solar modules, each 180Wp/24V, have been mounted on the roof of the service building, totalling 1.8 kWp, and supplemented by one wind turbine, Ampair 600/24V, with charge controller. For the energy storage, a battery bank consisting of 4 Gel batteries with a total of 460 Ah at 24 V has been used. For easy and quick installation at site, all electronics have been pre-wired on an installation board and tested before dispatch. Thus only the cableing of the battery bank, the wind turbine and the solar modules had to be performed.
The container platforms are built on the continental shelf in front of the Baltic Sea coast nearby Greifswald. Main purpose of the platforms are to analyse the sea water.
The platform is unattended and therefore designed as a fully automatic and autonomous power supply (230VAC/50Hz und 24V DC) to secure the transfer of the measured data through all over the year. Power is mainly used for electronic measurement facilities, some pumps and valves, navigation lighting as well as for a laptop with telemetric accessory for remote monitoring of measured data and operation of power system.
To secure the power supply, we have considered a two stage modular concept for the charging components. The basic installation consists of 1x wind generator Ampair 600 and4x Solara SM500S 125 Wp solar modules. In case charging current to the battery bank (4x SBG 12-230 in total 230 Ah/48 V) is not sufficient, the system may be extended by a further wind generator and addtional four solar modules. For emergency backup power a gas generator with automatic start facility is on standby. The strong>230 V/50Hz AC power comes from Studer XPC Inverter. The DC power supply (24V DC) is performed by 48/24 DC-DC converter.
For easy and quick installation at site, all electronics have been pre-wired and tested in our laboratory before dispatch. Thus only the cabeling of the battery bank, the wind turbine and the solar modules had to be performed.
For monitoring a geothermal project nearby Munich during its construction, a webcam and a UMTS data router has been installed at the project site. As there is no access to the Public Grid, the power supply of the webcam and router – foreseen for March to October – was managed by a specially designed Solar power system. The system is consisting of a charge regulator, Steca PRS1515, 3 pole-mounted 65 Wp Soplar modules, Kyocera KC65T-1, and a AGM battery bank of 2x 200Ah at 12V. For protection, charge regulator and battery bank have been installed in a ventilated switchboard.
