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Solar inverters (string and central)

The most common types of solar inverters are string and central inverters, used as power conversion systems for grid-tie solar applications.

Solar inverters system partitioning

Solar inverters comprise a DC-DC conversion stage, to adapt voltage levels and implement the Maximum Power Point Tracking (MPPT) function, to maximize energy transfer from the panel and a DC-AC conversion stage to correctly shape current and voltage waveforms transferred to the AC grid. A solar inverter has an anti-islanding function that guarantees safety in case of AC disconnection. 

With power ranging from a few kilowatts for solar string and multi-string inverters to tens or hundreds of kilowatts for solar central inverter solutions, the trend is to use topologies with very high input voltages (up to 1500V).

SiC power MOSFETs and more for efficient generation

We offer a broad range of silicon-carbide (SiC) power MOSFETs - with the industry's highest operating junction temperature of 200 °C - and trench-gate field-stop IGBTs, that can be also combined into our high-efficiency ACEPACK power modules. Together with galvanically-isolated gate drivers and high-performance STM32 microcontrollers, we enable engineers to design high-efficiency string and central solar inverters. In addition we have a range of wireless and wired connectivity solutions.

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