DC Coupled Off-Grid Systems

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Example of a DC coupled system

In a DC coupled system, all energy sources are coupled via direct current. The PV array is integrated via special DC/DC charge controllers. During the day, the battery stores energy generated by the PV array. This stored energy is then available in the evening for operating the lighting.

DC coupling is suitable for simple system constellations and is beneficial in cases where the electricity supply is primarily used to operate lighting. An example of this application is the Solar Home System (SHS) with a power range of a few hundred watts.

Alternating current loads in a DC coupled off-grid system can only be operated via an additional small inverter.

    AC Coupled Off-Grid Systems
    Hybrid AC and DC Coupled Off-Grid Systems