Inherently-Safer Hybrid Power Electronics Transformers (INSPIRE)

为了实现净零排放，越来越多的分布式可再生能源被连接到配电网中。与此同时，包括电动汽车快速充电器在内的一些分布式和动态负载也正在与配电网相结合。这些分布式电源和负载的较高渗透率导致更显著的电网电压变化，这可能导致违反电力质量标准EN50160。为了应对这一挑战，本项目建议在配电网中使用本质上更安全的混合变压器来调节电网电压并改善电能质量。与传统变压器相比，本文提出的混合变压器由传统变压器和部分额定电力电子器件组成，结合了低频变压器的鲁棒性、高效率和低成本与电力电子器件的全面可控性。分数额定电力电子器件允许混合变压器主动调节配电网中的电网电压和潮流。因此，它可以显著促进可再生能源和电动汽车的使用。

To achieve net zero, more and more distributed renewable energy sources have been connected to distribution networks. In the meantime, some distributed and dynamic loads including fast chargers of the electrical vehicles are being integrated with distribution networks as well. The higher penetration of these distributed sources and loads leads to much more significant grid voltage variations which may lead to the violation of the power quality standard EN50160\. To address this challenge, this project proposes to use inherently-safer hybrid transformers in distribution networks to regulate the grid voltage and improve the power quality. Compared to conventional transformers, the proposed hybrid transformers, consisting of a conventional transformer and a fractionally rated power electronic device, combines the robustness, high efficiency, and low cost of the low frequency transformer with the comprehensive controllability of the power electronics devices. The fractionally-rated power electronics allows the hybrid transformer to actively regulate the grid voltage and power flow in distribution networks. As a result, it can help significantly boost the uptake of renewable energy resources and electric vehicles.