The most common types of solar inverters are string and central inverters, used as power conversion systems for grid-tie solar applications.
They 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).
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.
Solar inverter block diagram
MEMS and Sensors
|HTS221||Capacitive digital sensor for relative humidity and temperature|
|IIS2DH||3-axis digital accelerometer, ultra low-power high performance MEMS motion sensor|
|IIS2MDC||High accuracy, ultra-low-power ,3-axis digital output magnetometer|
|IIS3DHHC||High-resolution, high-stability 3-axis digital inclinometer for industrial applications|
|ISM330DLC||iNEMO inertial measurement unit (IMU): 3D accelerometer and 3D gyroscope with digital output for industrial applications|
|LPS22HB||Ultra-compact piezoresistive absolute pressure sensor, 260-1260 hPa, digital output barometer, full-mold, holed LGA package (HLGA)|
|STLM20||Analog temperature sensor, ultra-low current 2.4 V, high precision|
|STTS751||2.25 V low-voltage local digital temperature sensor|