Sunny Boy 2500 SBD Inverter With Display Features Experience for the Future SMA has always been a pioneer in developing and producing inverters for photovoltaic applications. More than 30 MW of total installed inverter power from SMA have defined standards in this technology. This experience was the basis for the development of the Sunny Boy string inverter. Modern Power Electronics The power section of the Sunny Boy features a simple and robust design with highest efficiency and continuous reliability. The DC voltage from the PV modules is processed by a MOSFET bridge switched with 16 kHz and is passed on an AC circuit. This voltage is then directly fed to the AC grid with a transformer. Digital Monitoring Digital SCS: The control of the current fed to the grid is managed by a one-chip computer which guarantees a pure sine wave current and minimized harmonic distortion. The sequential control system ensures an automatic operation without losses in standby mode. Integrated Reserves The large heatsink ensures a continuous operation with nominal power, even in surroundings with high ambient temperatures. Integrated Communication The monitoring and the sequential control system are enhanced by the possibility to send and receive data and commands to and from a central monitoring device. This feature allows the Sunny Boy to be a standalone device or a single component of large PV plants.