The Sunny Island can request the generator to automatically use the built-in relay. Here we will be discussing how a generator can be connected to the Sunny Island, the parameters and the settings available for the generator.Ĭircuitry Overview: Three-phase Single-cluster System The generator is also used to supply power to charge the batteries in the case the battery State of Charge (SOC) drops too low. When designing under these circumstances, the necessary PV system and battery capacity becomes very large which can result in a significant investment.įor the purpose of keeping the system size smaller and therefore reducing the necessary investment, an external AC power source such as a diesel generator set can be used, so that the system can make use of it during periods in which available power is not sufficient for feeding the loads. Off-grid systems can be designed for supplying the complete load, but in order to do so, maximum load and unfavorable weather conditions are to be considered. The Sunny Island inverters are capable of forming an AC grid, this sine wave can be used as an interface for PV inverters to synchronize and feed power into the system which is used for supplying loads and recharging batteries. The SMA Sunny Island is a grid-forming battery inverter that can be used for the construction of stand-alone power supply systems.
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