Greater efficiency for large PV power plants

SMA DC-DC Converter

Intelligently Control the Flow of Power

The SMA DC-DC converter allows designers to increase their PV power plant’s yields by oversizing the DC array without compromising energy losses. This is accomplished with the new DC-coupling option and the generous DC–AC ratios of the Sunny Central UP inverter series.

The inverter can intelligently control the flow of power for many different use-cases, including clipped-loss capturing. The stored energy can be fed in at attractive times, for example, in the morning or at night, to achieve a better price-point for the energy. Grid operators are able to benefit from grid services, such as frequency control or time-based feed-in schedules.

Up to six DC-DC converters can be connected and operated simultaneously on the Sunny Central inverter. This minimizes battery short-circuits currents for high energy applications and avoids the need for additional and expensive protection measures inside the battery container.

Benefits of DC-coupled system layout

Retrofittable: Storage solutions can be integrated at any time, offering greater flexibility.
Supports new business models: Retrofit DC-coupled storage into existing PV plants prepared for future upgrades to unlock additional opportunities.
Step-up/step-down converter: Enables battery charge and discharge functionality.
Enhanced safety: Limits high short-circuit currents of the battery for improved system protection.
Optimised performance: Intelligent power flow control within the Sunny Central ensures efficient system operation.
Seamless integration: Coordinated protection concept ensures compatibility with the Sunny Central.
High efficiency: Delivers exceptional performance across different DC voltages, excelling under both partial and full load conditions.
Simplified upgrades: Add the benefits of storage to hybrid plants without the need for additional inverters or medium-voltage equipment.