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

该项目将考虑可行性，并开发一种产品，用紧凑型高频智能固态变压器取代传统的变压器，使用宽带隙技术，如碳化硅技术。随着碳化硅技术的出现，使用智能固态变压器取代用于配电网的传统变压器降压11kV至400V是可行的。智能固态变压器将低频主电源转换为高频中间电源，再由小型高频变压器降压。智能固态变压器的开关装置不仅体积小，而且可以控制配电网和供电网之间的双向潮流，这是分布式可再生能源发电所必需的。此外，它们还可以用于相位平衡和功率因数控制，还可以输出直流功率，用于电动汽车充电。该项目将寻求设计一种模块化的碳化硅智能固态变压器，它将能够与其他变压器一起使用，能够在广泛的电压和电流范围内使用，并能够以多种输入和输出功率形式使用。

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.