Modular Matrix Converter Based Solid State Transformer for smart grids

摘要

This paper proposes a grid forming Modular Matrix Converter Based Solid State Transformer for smart grids. The Modular Matrix Converter Based Solid State Transformer regulates the voltage amplitude and frequency of the low voltage grid, enabling sag and swell mitigation. Each module includes a three-phase Matrix Converter, connected to a three-phase High Frequency Transformer, whose secondaries are connected to three Single-Phase Matrix Converters. Input and output LC filters are required to guarantee nearly sinusoidal waveforms in the MV connection and in the LV grid.