Smart solid-state transformers in the distribution grid using silicon carbide technology

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The project will be considering the feasibility and developing a product to replace traditional transformers with compact high-frequency smart solid-state transformers using wide-bandgap technology, such as silicon carbide.With the emergence of silicon carbide technology, it is feasible to use smart solid-state transformers to replace traditional transformers used in distribution grid to stepdown 11 kV to 400 V. A smart solid-state transformer converts low-frequency main supply to a high-frequency intermediate supply, which is stepped down by a small high-frequency transformer. Then, high-frequency intermediate is converted back to main supply frequency.As well as being smaller, the switching devices of a smart solid-state transformer are controllable, which allows control of bidirectional power flow between distribution and supply grids, which is necessary for distributed renewable energy generation. In addition, they can be used for phase balancing and power factor control and they can be used to output DC power, which could be used to charge electric vehicles.This project will seek to design a modular silicon carbide smart solid-state transformer, which will be able to be used alongside others to be able to be used with a wide range of voltages and currents, and range of inputs and output power forms.