OFFGRID
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Catalog excerpts

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h ¡bis cctaiog you wiil ; ne cl p-odtcts rj-.d services necessary for planning and designing PV plonts (or residential and com- ■tierc a opolicalionî. Tieie riduce he Su.ny Boy, Sunny Mini Central and Sunny Tripovver inverters a; well as all monitoring

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PV INVERTERS WITHOUT TRANSFORMERS PV INVERTERS WITH TRANSFORMERS WIND POWER INVERTERS MONITORING SYSTEMS

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Solar power for people all over the world Over two billion people today are still without access to electricity and are therefore cut off from almost all the achievements of our modern civilization. After all, electricity is the key to clean water, education, health and economic development. With our products for off-grid systems, we provide a clean and, above all, cost-effective solution to this problem. Especially when not only the original costs, but also the costs of maintenance and operation are included in the equation. Stand-alone systems are not only of interest for emerging...

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OFF-GRID INVERTERS

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The Path to Your Own Power Distribution Grid Off-grid systems on AC basis open up new possibilities for providing a stable and powerful energy supply independent of the power distribution grid. This kind of sland- □ry supply quality usually associated with power distribution grids. Due to ils modular structure, ¡I is also very simple to install and gralion of renewable energy sources which avoid fuel casis and are steadily becoming today already more cosr-effectivo -han con ventional systems running on diesel genera- tori. This section explains ihe basic technical principles of off-grid...

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AC coupling is the basis for modular off-grid power supply of up to 300 kW. In contrast to DC coupling, all energy sources and consumers are connected through an AC power grid, which offers a number of advantages: commercial and therefore af- fordable AC power devices can be used on the consumer side. On the generator side, any number of renewable or conventional energy sources can be incorporated. Alter- nating current grids can be expanded with- out specialized technical knowledge and using standard components that are avail- able everywhere. Compared to components for direct current...

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3. Three Phases - No Problem For the transmission of large capacities in alterne ling cu'reril grids, a three-phase configuration has prove í effective - this is true both lor large power distribution grids and for standalone grids. The advantage; Due to the overlap of the phase ih Ited in dividual capacities, three-phase consumers have practically continuous power at their disposal. The generators in diesel power oily possible to set up single-phase systems up to o battery inverter power of 20 kW (parallel connection of four Sunny Island 5048 to one phase). For larger capacities, usually...

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4. Multicluster Technology - Less Expense for Large Systems The special advantage of SMA's off-grid system technology lies in its modular de- sign: PV plants ol any power class ore built using comparatively small and manageable By dividing inverler capacity into dusters (i.e. groups of three devices ecch|, the píen- le- is extremely Flexible with respect to system performance: It is a most irilirilely stilino -: jys'cm s also easy to implement. Since the basic design is the same and the devices which are used ore always the same, and mointoin PV plants of any size after only a single...

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Flat Hierarchy: Inverters Linked into Cluster Groups In o stand-alone grid with up to 36 Sunny Island irverleri. a clearly organized s-ruclure is essential to ensure effective control of the grid. As mentioned above, each of the maximum twelve dusters consists of three inverters - one master and two slaves. Each of these three-phase clusters is assigned o separate sub-battery that it controls and the main cluster. The corresponding moin master device controls the entire system and communicates with the Multiclgster Box. The main cluster is supported by up to eleven extension slaves. Thus,...

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Flexible in Normal Operation The modular design ol oil-grid systems oilers an amazing degree of fiexki lily llial planning, bul also for system expansion and maintenance. The modular design upgrade any small system. Additional clusters any time so lhat the capacity of renewable energy generalion can be expanded in ac- ■lecHons OCjSS bk> On I.KIi.Tl iVll.llticl.JSkv Box and the ampacity of their swilching devices system is also enhanced by ihe modular slruclure based on compact standard devices. With the exception ol the main cluster, maintenance or replacement ol indi- lime. The same is...

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S. The Island Solution - Modern Electricity Supply on Eigg Island mpleola high-performance, off-grid supply system con be found on Eigg Hebrides, about 30 km' in size and with from the mainland, which is about 1 ó kilo- meters awoy. The costs are simply too high. Until 2008, the island was supplied with power supply was always very expensive. On top of this, there were disconnections at night due to the noise pollution and all electricity hod to be switched off when Your own power distribution grid Since 2008, the islanders hove been reap- ing the benefits of a modern three-phase power...

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The main master will only slart the diesel generator when the state oí charge goes be- ow 60 %. In this case, the power rrequency they continuously keep the energy bo la nee stable. When large loads are activated or deactivated, ihe load on the generator is not changed immediately - the inverters are □ble lo compensate the load fluctuation by instantaneous charges of their charge or discharge current. An importent contribution is made by the enormous overload capa- supply 144 kW oí battery power to the grid. In its role as grid manager, the main cluster weighs up the alternatives of...

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The Efficient Island Manager: Now with 20 Percent More Power In Ihe development of the new Sunny Island inverters 4548-US and 6048-US, their efficiency was in particular was optimized. Expanding on the proven technology of Sunny Island 5048-US, they con reach the maximum efficiency level of over 96 % as well as a weighted CEC efficiency level of 94.5 %. This saves diesel costs and enables a smaller dimensioning of PV plants. The new devices for the US market can be used with the SMA mullid usier technology for systems with 0 capacity ol up to 100 kW.

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